Pub Date : 2020-01-01DOI: 10.1109/CJECE.2020.2995750
N. Ninad, D. Turcotte, Y. Poissant
Most Canadian remote communities are supplied electricity partly or wholly generated by diesel generators, which results in high electricity costs mostly due to the cost of transporting fuel to the remote locations. A large portion of the financial budget from the government or local community is allocated to cover the cost of diesel electricity generation. Renewable energy integration can substantially reduce the cost of electricity generation and greenhouse gases (GHGs) emissions in these remote communities. The annual solar photovoltaic (PV) potential for these northern arctic communities ranges from 850 to 1150 kWh/kWp; therefore, a significant portion of the community energy requirement can be supplied by the PV system. This article presents the impact of PV integration on the system’s annual performance and project economic aspects of small remote northern microgrids for integrating varying penetration levels of centralized PV systems. The modeling of a typical PV-diesel hybrid system considering the electrical performance, emissions, and economics of various generation sizes and control strategies has been addressed. The methodology presented in this article can help quantify the PV energy integration limit (without any spill/curtailment) and economic feasibility of new PV system integration in current arctic microgrids.
{"title":"Analysis of PV-Diesel Hybrid Microgrids for Small Canadian Arctic Communities","authors":"N. Ninad, D. Turcotte, Y. Poissant","doi":"10.1109/CJECE.2020.2995750","DOIUrl":"https://doi.org/10.1109/CJECE.2020.2995750","url":null,"abstract":"Most Canadian remote communities are supplied electricity partly or wholly generated by diesel generators, which results in high electricity costs mostly due to the cost of transporting fuel to the remote locations. A large portion of the financial budget from the government or local community is allocated to cover the cost of diesel electricity generation. Renewable energy integration can substantially reduce the cost of electricity generation and greenhouse gases (GHGs) emissions in these remote communities. The annual solar photovoltaic (PV) potential for these northern arctic communities ranges from 850 to 1150 kWh/kWp; therefore, a significant portion of the community energy requirement can be supplied by the PV system. This article presents the impact of PV integration on the system’s annual performance and project economic aspects of small remote northern microgrids for integrating varying penetration levels of centralized PV systems. The modeling of a typical PV-diesel hybrid system considering the electrical performance, emissions, and economics of various generation sizes and control strategies has been addressed. The methodology presented in this article can help quantify the PV energy integration limit (without any spill/curtailment) and economic feasibility of new PV system integration in current arctic microgrids.","PeriodicalId":55287,"journal":{"name":"Canadian Journal of Electrical and Computer Engineering-Revue Canadienne De Genie Electrique et Informatique","volume":"43 1","pages":"315-325"},"PeriodicalIF":1.7,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/CJECE.2020.2995750","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"62193496","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-01DOI: 10.1109/CJECE.2020.2967129
Lilla Litvani, J. Hamar
This article is concerned with the asymmetrical control strategies of a four-channel dc/dc buck converter in the continuous current conduction mode (CCM). The converter has two input and four output channels. Energy equations of the converter are studied, and asymmetry of input voltages, output voltages, and loads are examined in the CCM. The proposed control strategy allows us to directly control the power flow in each channel without any unwanted consequences for the rest of the channels among these conditions. The main advantage is the direct control of the total transferred power by the positive sequence of the capacitor voltage, the power exchange among the input channels by the negative sequence of the capacitor voltage, and the power exchange among the output channels by the inductor currents. Calculating these currents also helps to determine whether the converter at a certain point operates in the CCM or in the boundary mode (where zero current switching is possible). Feasibility of zero-voltage switching is simplified by this method. Converter efficiency is showed to be 83% at asymmetrical output voltages in the CCM. Theoretical studies are confirmed by both numerical simulations and laboratory experiments on a 100-W prototype. The studied converter can be applied in supplying multilevel inverters.
{"title":"Four-Channel Buck Converter in Asymmetrical Continuous Current Conduction Mode","authors":"Lilla Litvani, J. Hamar","doi":"10.1109/CJECE.2020.2967129","DOIUrl":"https://doi.org/10.1109/CJECE.2020.2967129","url":null,"abstract":"This article is concerned with the asymmetrical control strategies of a four-channel dc/dc buck converter in the continuous current conduction mode (CCM). The converter has two input and four output channels. Energy equations of the converter are studied, and asymmetry of input voltages, output voltages, and loads are examined in the CCM. The proposed control strategy allows us to directly control the power flow in each channel without any unwanted consequences for the rest of the channels among these conditions. The main advantage is the direct control of the total transferred power by the positive sequence of the capacitor voltage, the power exchange among the input channels by the negative sequence of the capacitor voltage, and the power exchange among the output channels by the inductor currents. Calculating these currents also helps to determine whether the converter at a certain point operates in the CCM or in the boundary mode (where zero current switching is possible). Feasibility of zero-voltage switching is simplified by this method. Converter efficiency is showed to be 83% at asymmetrical output voltages in the CCM. Theoretical studies are confirmed by both numerical simulations and laboratory experiments on a 100-W prototype. The studied converter can be applied in supplying multilevel inverters.","PeriodicalId":55287,"journal":{"name":"Canadian Journal of Electrical and Computer Engineering-Revue Canadienne De Genie Electrique et Informatique","volume":"43 1","pages":"251-260"},"PeriodicalIF":1.7,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/CJECE.2020.2967129","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"62193654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-01DOI: 10.1109/CJECE.2019.2903221
Bahar Houtan, H. Zarrabi
This paper introduces an obstacle-aware fuzzy-based scheme for the localization of wireless chargers in wireless sensor networks (WSNs), which aims to deploy chargers in both fixed and/or multiple duty-cycled networks. A power harvesting model is proposed that considers the obstacle penetration loss in the harvested power from multiple chargers. We take advantage of the fuzzy control system (FCS) scheme to gain prior knowledge about the distribution pattern of the nodes. The simulation results confirm that deploying chargers based on this scheme decreases the required number of chargers, in comparison with the nonfuzzy algorithms by up to 59.6% in multiduty-cycled and 34.4% in fixed duty-cycled scenarios, in the best cases.
{"title":"Obstacle-Aware Fuzzy-Based Localization of Wireless Chargers in Wireless Sensor Networks","authors":"Bahar Houtan, H. Zarrabi","doi":"10.1109/CJECE.2019.2903221","DOIUrl":"https://doi.org/10.1109/CJECE.2019.2903221","url":null,"abstract":"This paper introduces an obstacle-aware fuzzy-based scheme for the localization of wireless chargers in wireless sensor networks (WSNs), which aims to deploy chargers in both fixed and/or multiple duty-cycled networks. A power harvesting model is proposed that considers the obstacle penetration loss in the harvested power from multiple chargers. We take advantage of the fuzzy control system (FCS) scheme to gain prior knowledge about the distribution pattern of the nodes. The simulation results confirm that deploying chargers based on this scheme decreases the required number of chargers, in comparison with the nonfuzzy algorithms by up to 59.6% in multiduty-cycled and 34.4% in fixed duty-cycled scenarios, in the best cases.","PeriodicalId":55287,"journal":{"name":"Canadian Journal of Electrical and Computer Engineering-Revue Canadienne De Genie Electrique et Informatique","volume":"43 1","pages":"17-24"},"PeriodicalIF":1.7,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/CJECE.2019.2903221","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"62193144","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-01DOI: 10.1109/CJECE.2020.2972576
Zhumu Fu, Yongqiang Wang, Fazhan Tao, Pengju Si
In order to improve transient response and robust tracking performance, an adaptive nonsingular terminal sliding mode control (ANTSMC) strategy is developed for bidirectional dc–dc converter (BDC) of hybrid energy storage systems (HESSs). By using the adaptive rules, the estimated values of load variations, external input voltage, input current, and output voltage can be obtained. Then, the voltage tracking error can be calculated based on the estimated value and the actual value. The fast terminal SMC strategy is proposed such that the tracking error converges in a finite time. Simulation results, compared with conventional PID, second-order sliding mode, show that output voltage can robustly track the reference voltage with fast response.
{"title":"An Adaptive Nonsingular Terminal Sliding Mode Control for Bidirectional DC–DC Converter in Hybrid Energy Storage Systems","authors":"Zhumu Fu, Yongqiang Wang, Fazhan Tao, Pengju Si","doi":"10.1109/CJECE.2020.2972576","DOIUrl":"https://doi.org/10.1109/CJECE.2020.2972576","url":null,"abstract":"In order to improve transient response and robust tracking performance, an adaptive nonsingular terminal sliding mode control (ANTSMC) strategy is developed for bidirectional dc–dc converter (BDC) of hybrid energy storage systems (HESSs). By using the adaptive rules, the estimated values of load variations, external input voltage, input current, and output voltage can be obtained. Then, the voltage tracking error can be calculated based on the estimated value and the actual value. The fast terminal SMC strategy is proposed such that the tracking error converges in a finite time. Simulation results, compared with conventional PID, second-order sliding mode, show that output voltage can robustly track the reference voltage with fast response.","PeriodicalId":55287,"journal":{"name":"Canadian Journal of Electrical and Computer Engineering-Revue Canadienne De Genie Electrique et Informatique","volume":"8 1","pages":"282-289"},"PeriodicalIF":1.7,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/CJECE.2020.2972576","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"62193417","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-01-01DOI: 10.1109/CJECE.2020.3007200
S. Delshadpour, Abhijeet Kulkarni, Xu Zhang
A Type-C biphase mark code (BMC) transceiver in 0.14-$mu text{m}$ CMOS technology is presented. The analog PHY in combination with digital PHY supports BMC data for USB power delivery (PD) negotiations through a Type-C cable. It compensates for signal-level loss and duty cycle distortion due to ground shifting at both ends of a Type-C cable. Analog receiver includes a BMC squelch detector decision-making comparators and a duty cycle correction circuit. Analog transmitter includes a slew rate control circuit, level shifter, and linear line driver. Digital PHY makes more corrections on duty cycle in the receiver side, recovers bits and symbols from the asynchronous serial data, and sends BMC coded data to the transmitter. The connector-facing high-voltage pins to which an analog transceiver is connected are protected against the high-voltage surge. Analog receiver consumes 0.2-mA current under 3-V supply and analog transmitter consumes 1.7-mA current to drive a 1-nF and serial 50-$Omega $ loads. The total area of receiver and transmitter with all supporting circuits and high-voltage switches is 0.4 mm2. The implemented transceiver is compliant with USB PD and Type-C standards with respect to all required parameters.
{"title":"A BMC Analog and Digital PHY for USB Type-C Power Delivery","authors":"S. Delshadpour, Abhijeet Kulkarni, Xu Zhang","doi":"10.1109/CJECE.2020.3007200","DOIUrl":"https://doi.org/10.1109/CJECE.2020.3007200","url":null,"abstract":"A Type-C biphase mark code (BMC) transceiver in 0.14-<inline-formula> <tex-math notation=\"LaTeX\">$mu text{m}$ </tex-math></inline-formula> CMOS technology is presented. The analog PHY in combination with digital PHY supports BMC data for USB power delivery (PD) negotiations through a Type-C cable. It compensates for signal-level loss and duty cycle distortion due to ground shifting at both ends of a Type-C cable. Analog receiver includes a BMC squelch detector decision-making comparators and a duty cycle correction circuit. Analog transmitter includes a slew rate control circuit, level shifter, and linear line driver. Digital PHY makes more corrections on duty cycle in the receiver side, recovers bits and symbols from the asynchronous serial data, and sends BMC coded data to the transmitter. The connector-facing high-voltage pins to which an analog transceiver is connected are protected against the high-voltage surge. Analog receiver consumes 0.2-mA current under 3-V supply and analog transmitter consumes 1.7-mA current to drive a 1-nF and serial 50-<inline-formula> <tex-math notation=\"LaTeX\">$Omega $ </tex-math></inline-formula> loads. The total area of receiver and transmitter with all supporting circuits and high-voltage switches is 0.4 mm<sup>2</sup>. The implemented transceiver is compliant with USB PD and Type-C standards with respect to all required parameters.","PeriodicalId":55287,"journal":{"name":"Canadian Journal of Electrical and Computer Engineering-Revue Canadienne De Genie Electrique et Informatique","volume":"43 1","pages":"195-202"},"PeriodicalIF":1.7,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/CJECE.2020.3007200","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"62193740","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-08-21DOI: 10.1109/CJECE.2019.2907118
Yongkeun Lee
Torque ripple is always problematic in brushless dc (BLDC) motor drive. It is caused by nonsymmetric commutating phase current rate and phase current shift error. The latter is inevitable even in the latest sensor/sensorless BLDC motor control and drive. In this paper, a simple, robust, and low-cost method of minimizing overall torque ripple in the presence of phase current shift error is presented. It works and manages well to maintain the torque ripple increase within 10% even with 27° phase current shift, compared with more than 25% torque ripple increase without any compensator. The proposed technique is theoretically elucidated in detail, and the performance is verified via MATLAB/Simulink simulation and experiments.
{"title":"A New Method to Minimize Overall Torque Ripple in the Presence of Phase Current Shift Error for Three-Phase BLDC Motor Drive","authors":"Yongkeun Lee","doi":"10.1109/CJECE.2019.2907118","DOIUrl":"https://doi.org/10.1109/CJECE.2019.2907118","url":null,"abstract":"Torque ripple is always problematic in brushless dc (BLDC) motor drive. It is caused by nonsymmetric commutating phase current rate and phase current shift error. The latter is inevitable even in the latest sensor/sensorless BLDC motor control and drive. In this paper, a simple, robust, and low-cost method of minimizing overall torque ripple in the presence of phase current shift error is presented. It works and manages well to maintain the torque ripple increase within 10% even with 27° phase current shift, compared with more than 25% torque ripple increase without any compensator. The proposed technique is theoretically elucidated in detail, and the performance is verified via MATLAB/Simulink simulation and experiments.","PeriodicalId":55287,"journal":{"name":"Canadian Journal of Electrical and Computer Engineering-Revue Canadienne De Genie Electrique et Informatique","volume":"42 1","pages":"225-231"},"PeriodicalIF":1.7,"publicationDate":"2019-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/CJECE.2019.2907118","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45828434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-08-21DOI: 10.1109/CJECE.2019.2897587
Gang Qiao, Zeeshan Babar, Lu Ma, Niaz Ahmed
High-speed underwater acoustic (UWA) communication is challenging due to limited bandwidth, extended multipath spread, severe Doppler effect, and large transmission loss. The use of multiple transducers at both transmitter and receiver increases the spatial diversity of the system, and orthogonal frequency-division multiplexing (OFDM) solves the problem of limited bandwidth due to its high spectral efficiency. Thus, the combination of multiple-input multiple-output (MIMO) and OFDM shifts the UWA communication to a whole new level; however, at the same time, it also increases the design challenges for the development of such systems. Intersymbol interference, intercarrier interference, and cochannel interference are introduced in the received signal by the extended multipath and Doppler shifts along with different types of noises due to the noisy acoustic channel. Therefore, many channel estimation and equalization schemes are developed for the UWA MIMO-OFDM communication systems. In this paper, these schemes are thoroughly reviewed, summarized, categorized, and compared with other similar algorithms in terms of complexity and performance while pointing out the prevailing research problems.Résumé—La communication acoustique sous-marine à haute vitesse (ASM) est un défi en raison de la bande passante limitée, de la propagation multi-trajets étendue, de l’effet Doppler grave et de la perte importante de transmission. L’utilisation de plusieurs transducteurs à la fois émetteur et récepteur augmente la diversité spatiale du système, et le multiplexage par répartition orthogonale de la fréquence (MROF) résout le problème de la bande passante limitée en raison de son efficacité spectrale élevée. Ainsi, la combinaison de multi-entrées multi-sorties (MEMS) et MROF déplace la communication ASM à un tout autre niveau; Cependant, dans le même temps, cela augmente également les défis de conception pour le développement de tels systèmes. Les interférences intersymboles, interférences entre porteuses et le brouillage dans le même canal (cochannel) sont introduits dans le signal reçu par les décalages étendus sur trajets multiples et Doppler, ainsi que par différents types de bruits dus au canal acoustique bruyant. Par conséquent, de nombreux schémas d’estimation et d’égalisation de canal sont développés pour les systèmes de communication ASM MEMS-MROF. Dans cet article, ces schémas sont examinés, résumés, classés et comparés à d’autres algorithmes similaires en termes de complexité et de performances, tout en soulignant les problèmes de recherche courants.
{"title":"Channel Estimation and Equalization of Underwater Acoustic MIMO-OFDM Systems: A Review Estimation du canal et l’égalisation des systèmes MEMS-MROF acoustiques sous-marins: une revue","authors":"Gang Qiao, Zeeshan Babar, Lu Ma, Niaz Ahmed","doi":"10.1109/CJECE.2019.2897587","DOIUrl":"https://doi.org/10.1109/CJECE.2019.2897587","url":null,"abstract":"High-speed underwater acoustic (UWA) communication is challenging due to limited bandwidth, extended multipath spread, severe Doppler effect, and large transmission loss. The use of multiple transducers at both transmitter and receiver increases the spatial diversity of the system, and orthogonal frequency-division multiplexing (OFDM) solves the problem of limited bandwidth due to its high spectral efficiency. Thus, the combination of multiple-input multiple-output (MIMO) and OFDM shifts the UWA communication to a whole new level; however, at the same time, it also increases the design challenges for the development of such systems. Intersymbol interference, intercarrier interference, and cochannel interference are introduced in the received signal by the extended multipath and Doppler shifts along with different types of noises due to the noisy acoustic channel. Therefore, many channel estimation and equalization schemes are developed for the UWA MIMO-OFDM communication systems. In this paper, these schemes are thoroughly reviewed, summarized, categorized, and compared with other similar algorithms in terms of complexity and performance while pointing out the prevailing research problems.Résumé—La communication acoustique sous-marine à haute vitesse (ASM) est un défi en raison de la bande passante limitée, de la propagation multi-trajets étendue, de l’effet Doppler grave et de la perte importante de transmission. L’utilisation de plusieurs transducteurs à la fois émetteur et récepteur augmente la diversité spatiale du système, et le multiplexage par répartition orthogonale de la fréquence (MROF) résout le problème de la bande passante limitée en raison de son efficacité spectrale élevée. Ainsi, la combinaison de multi-entrées multi-sorties (MEMS) et MROF déplace la communication ASM à un tout autre niveau; Cependant, dans le même temps, cela augmente également les défis de conception pour le développement de tels systèmes. Les interférences intersymboles, interférences entre porteuses et le brouillage dans le même canal (cochannel) sont introduits dans le signal reçu par les décalages étendus sur trajets multiples et Doppler, ainsi que par différents types de bruits dus au canal acoustique bruyant. Par conséquent, de nombreux schémas d’estimation et d’égalisation de canal sont développés pour les systèmes de communication ASM MEMS-MROF. Dans cet article, ces schémas sont examinés, résumés, classés et comparés à d’autres algorithmes similaires en termes de complexité et de performances, tout en soulignant les problèmes de recherche courants.","PeriodicalId":55287,"journal":{"name":"Canadian Journal of Electrical and Computer Engineering-Revue Canadienne De Genie Electrique et Informatique","volume":"42 1","pages":"199-208"},"PeriodicalIF":1.7,"publicationDate":"2019-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/CJECE.2019.2897587","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48787374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-08-21DOI: 10.1109/CJECE.2019.2906670
H. Yanan, Han Bin, Xiang Zutao
As the ultrahigh-voltage (UHV) projects are rapidly developing, it is necessary to investigate the problems involved in overvoltage and insulation, thereby providing a technical basis for future UHV projects. The switching overvoltage of closing no-load lines was simulated and analyzed here using two kinds of typical UHV network structures: the power plant to the grid system and the grid-to-grid system. Different factors, such as line length, mode of operation on the power plant side, and short-circuit capacity, are considered. It is possible for lines shorter than 60 km to eliminate the closing resistor, determined by calculating the probability of flashover. We analyzed the phase selection closing in depth to inhibit the switching overvoltage and considered the factors such as phase deviation and the length of the line. Finally, the applicability of phase selection closing is put forward for lines of different lengths.
{"title":"Analysis of Switching Overvoltage and Suppression Measures in UHV Transmission Lines","authors":"H. Yanan, Han Bin, Xiang Zutao","doi":"10.1109/CJECE.2019.2906670","DOIUrl":"https://doi.org/10.1109/CJECE.2019.2906670","url":null,"abstract":"As the ultrahigh-voltage (UHV) projects are rapidly developing, it is necessary to investigate the problems involved in overvoltage and insulation, thereby providing a technical basis for future UHV projects. The switching overvoltage of closing no-load lines was simulated and analyzed here using two kinds of typical UHV network structures: the power plant to the grid system and the grid-to-grid system. Different factors, such as line length, mode of operation on the power plant side, and short-circuit capacity, are considered. It is possible for lines shorter than 60 km to eliminate the closing resistor, determined by calculating the probability of flashover. We analyzed the phase selection closing in depth to inhibit the switching overvoltage and considered the factors such as phase deviation and the length of the line. Finally, the applicability of phase selection closing is put forward for lines of different lengths.","PeriodicalId":55287,"journal":{"name":"Canadian Journal of Electrical and Computer Engineering-Revue Canadienne De Genie Electrique et Informatique","volume":"42 1","pages":"209-214"},"PeriodicalIF":1.7,"publicationDate":"2019-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/CJECE.2019.2906670","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41929269","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-07-24DOI: 10.1109/CJECE.2018.2875111
Xiaodong Liang
Condition monitoring is essential for the reliable operation of induction motors. Temperature estimation serves as a basis for motor protection. Developing accurate and real-time temperature calculation algorithms is critical for thermal and overload protection for induction motors. Vibration monitoring is a widely used approach for induction motors’ fault diagnosis. Vibration signals are usually analyzed by time-, frequency-, or time–frequency-domain signal processing methods. Recent advancement of fault diagnosis by machine learning makes intelligent approaches feasible. Although decades of efforts have been put on condition monitoring of regular induction motors, electrical submersible motors operating in a very unique downhole environment in the oil industry have not received much attention. Currently, electrical submersible motors rely on downhole monitoring tools to transmit temperature and vibration data measured by sensors from downhole to the surface; however, such data are transmitted at a slow rate, and there are no fault diagnosis algorithms in place. An advanced condition monitoring and fault diagnosis method for electrical submersible motors is needed in the near future. In this paper, a literature review is conducted on temperature estimation and vibration monitoring techniques for induction motors, the state-of-the-art methods are summarized, and their potential application in electrical submersible motors are recommended.
{"title":"Temperature Estimation and Vibration Monitoring for Induction Motors and the Potential Application in Electrical Submersible Motors","authors":"Xiaodong Liang","doi":"10.1109/CJECE.2018.2875111","DOIUrl":"https://doi.org/10.1109/CJECE.2018.2875111","url":null,"abstract":"Condition monitoring is essential for the reliable operation of induction motors. Temperature estimation serves as a basis for motor protection. Developing accurate and real-time temperature calculation algorithms is critical for thermal and overload protection for induction motors. Vibration monitoring is a widely used approach for induction motors’ fault diagnosis. Vibration signals are usually analyzed by time-, frequency-, or time–frequency-domain signal processing methods. Recent advancement of fault diagnosis by machine learning makes intelligent approaches feasible. Although decades of efforts have been put on condition monitoring of regular induction motors, electrical submersible motors operating in a very unique downhole environment in the oil industry have not received much attention. Currently, electrical submersible motors rely on downhole monitoring tools to transmit temperature and vibration data measured by sensors from downhole to the surface; however, such data are transmitted at a slow rate, and there are no fault diagnosis algorithms in place. An advanced condition monitoring and fault diagnosis method for electrical submersible motors is needed in the near future. In this paper, a literature review is conducted on temperature estimation and vibration monitoring techniques for induction motors, the state-of-the-art methods are summarized, and their potential application in electrical submersible motors are recommended.","PeriodicalId":55287,"journal":{"name":"Canadian Journal of Electrical and Computer Engineering-Revue Canadienne De Genie Electrique et Informatique","volume":"42 1","pages":"148-162"},"PeriodicalIF":1.7,"publicationDate":"2019-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/CJECE.2018.2875111","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47184272","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-07-23DOI: 10.1109/CJECE.2019.2922384
Xiaodong Liang, A. El-Kadri
Electrical submersible pump (ESP) systems in the oil field have unique features due to the long cabling effect. The electrical system for a typical ESP installation consists of a variable frequency drive (VFD), a multi-tap step-up transformer, a surface cable, a downhole main cable, a motor lead extension (MLE) cable, and an electrical submersible motor. A load filter is usually required in a VFD-ESP system. In this paper, several operational parameters that can significantly affect operating conditions of an ESP system are demonstrated through field measurements and simulation of a practical ESP system currently in operation in Alberta, Canada. The simulation model is also validated by comparing with field measurement data. This analysis is beneficial to field engineers and ESP system operators to understand better the impacts of equipment parameter settings.
{"title":"Operational Parameters Affecting Harmonic Resonance in Electrical Submersible Pump Systems","authors":"Xiaodong Liang, A. El-Kadri","doi":"10.1109/CJECE.2019.2922384","DOIUrl":"https://doi.org/10.1109/CJECE.2019.2922384","url":null,"abstract":"Electrical submersible pump (ESP) systems in the oil field have unique features due to the long cabling effect. The electrical system for a typical ESP installation consists of a variable frequency drive (VFD), a multi-tap step-up transformer, a surface cable, a downhole main cable, a motor lead extension (MLE) cable, and an electrical submersible motor. A load filter is usually required in a VFD-ESP system. In this paper, several operational parameters that can significantly affect operating conditions of an ESP system are demonstrated through field measurements and simulation of a practical ESP system currently in operation in Alberta, Canada. The simulation model is also validated by comparing with field measurement data. This analysis is beneficial to field engineers and ESP system operators to understand better the impacts of equipment parameter settings.","PeriodicalId":55287,"journal":{"name":"Canadian Journal of Electrical and Computer Engineering-Revue Canadienne De Genie Electrique et Informatique","volume":"42 1","pages":"183-197"},"PeriodicalIF":1.7,"publicationDate":"2019-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/CJECE.2019.2922384","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45826299","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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