Pub Date : 2018-12-01DOI: 10.1109/SPEC.2018.8635842
Zhiqin Zhao, Yang Chen, Pengcheng Han, Xiaoqiong He, Xu Peng
Aiming at the unbalanced DC voltage of multi-module three-level neutral point clamp cascaded rectifier (3LNPC-CR), a smooth voltage balance modulation strategy is proposed in this paper to solve the problem of unbalanced capacitor voltage in modules and unbalanced DC link voltage between modules. On the premise of normal operation, the input level of each module must not change. The voltage balance effect of the universal voltage balance modulation and the smooth voltage balance modulation are compared and calculated. Simulation and experimental results verify the feasibility of this strategy.
{"title":"Research on Smooth Voltage Balance Modulation Strategy in Three Level Neutral Point Clamped Cascade Rectifier","authors":"Zhiqin Zhao, Yang Chen, Pengcheng Han, Xiaoqiong He, Xu Peng","doi":"10.1109/SPEC.2018.8635842","DOIUrl":"https://doi.org/10.1109/SPEC.2018.8635842","url":null,"abstract":"Aiming at the unbalanced DC voltage of multi-module three-level neutral point clamp cascaded rectifier (3LNPC-CR), a smooth voltage balance modulation strategy is proposed in this paper to solve the problem of unbalanced capacitor voltage in modules and unbalanced DC link voltage between modules. On the premise of normal operation, the input level of each module must not change. The voltage balance effect of the universal voltage balance modulation and the smooth voltage balance modulation are compared and calculated. Simulation and experimental results verify the feasibility of this strategy.","PeriodicalId":335893,"journal":{"name":"2018 IEEE 4th Southern Power Electronics Conference (SPEC)","volume":"439 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129411009","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 : 2018-12-01DOI: 10.1109/SPEC.2018.8635886
Yun Zhang, Lifang Wang, Yanjie Guo, Chengxuan Tao
Inductive power transfer (IPT) is a method that can be used to transfer power to electric vehicle (EV) because it's safe, convenient and reliable. In order to design the magnetic pads, a new model must be set up for every pad and the number of simulations increases exponentially which is very time consuming. This paper focuses on the EV application and presents a method of reducing the number of required simulations. The analytical calculations can be used to optimize the coils without ferrite and the finite element method (FEM) can be used to optimize the coils with ferrite. Since the results show that the coils with ferrite and coils without ferrite have the same trend of variability of coupling coefficient with varying physical size and coverage, an optimization method of magnetic pads is proposed to combine analytical calculations with FEM simulations. First the physical size of coils and the coverage of coils are optimized by using the analytical calculations. Then FEM simulations are used to optimize the ferrite arrangements and determine the coil turns. The method is confirmed via simulation validations.
{"title":"Design and Optimization of Asymmetrical Spiral Rectangular Pads for EV Wireless Charging","authors":"Yun Zhang, Lifang Wang, Yanjie Guo, Chengxuan Tao","doi":"10.1109/SPEC.2018.8635886","DOIUrl":"https://doi.org/10.1109/SPEC.2018.8635886","url":null,"abstract":"Inductive power transfer (IPT) is a method that can be used to transfer power to electric vehicle (EV) because it's safe, convenient and reliable. In order to design the magnetic pads, a new model must be set up for every pad and the number of simulations increases exponentially which is very time consuming. This paper focuses on the EV application and presents a method of reducing the number of required simulations. The analytical calculations can be used to optimize the coils without ferrite and the finite element method (FEM) can be used to optimize the coils with ferrite. Since the results show that the coils with ferrite and coils without ferrite have the same trend of variability of coupling coefficient with varying physical size and coverage, an optimization method of magnetic pads is proposed to combine analytical calculations with FEM simulations. First the physical size of coils and the coverage of coils are optimized by using the analytical calculations. Then FEM simulations are used to optimize the ferrite arrangements and determine the coil turns. The method is confirmed via simulation validations.","PeriodicalId":335893,"journal":{"name":"2018 IEEE 4th Southern Power Electronics Conference (SPEC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128918885","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 : 2018-12-01DOI: 10.1109/SPEC.2018.8636029
N. Jabbour, E. Tsioumas, M. Koseoglou, C. Mademlis
This paper proposes a highly reliable monitoring and equalization scheme for a hybrid energy storage system (HESS) with batteries (BTs) and supercapacitors (SCs). The system is properly designed for electric motor drives in building applications. However, the proposed system can also be applied in any other building applications by slightly changing the control algorithm. The high motoring reliability in the suggested system is attained by evaluating the performance of each SC and BT considering the history and the HESS operation. The high equalization reliability is achieved through a new topology and a control algorithm that properly manage an auxiliary SC-based ESS which serves as a backup energy bank in order to provide the required energy in any weak cells of the main HESS for equalizing their voltage as well as enhancing the dynamic performance of the main application. The effectiveness of the proposed monitoring and equalization control scheme has been validated by several simulation results that are extensively discussed throughout the paper.
{"title":"Highly Reliable Monitoring and Equalization in a Hybrid Energy Storage System with Batteries and Supercapacitors for Electric Motor Drives in Building Applications","authors":"N. Jabbour, E. Tsioumas, M. Koseoglou, C. Mademlis","doi":"10.1109/SPEC.2018.8636029","DOIUrl":"https://doi.org/10.1109/SPEC.2018.8636029","url":null,"abstract":"This paper proposes a highly reliable monitoring and equalization scheme for a hybrid energy storage system (HESS) with batteries (BTs) and supercapacitors (SCs). The system is properly designed for electric motor drives in building applications. However, the proposed system can also be applied in any other building applications by slightly changing the control algorithm. The high motoring reliability in the suggested system is attained by evaluating the performance of each SC and BT considering the history and the HESS operation. The high equalization reliability is achieved through a new topology and a control algorithm that properly manage an auxiliary SC-based ESS which serves as a backup energy bank in order to provide the required energy in any weak cells of the main HESS for equalizing their voltage as well as enhancing the dynamic performance of the main application. The effectiveness of the proposed monitoring and equalization control scheme has been validated by several simulation results that are extensively discussed throughout the paper.","PeriodicalId":335893,"journal":{"name":"2018 IEEE 4th Southern Power Electronics Conference (SPEC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128976883","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 : 2018-12-01DOI: 10.1109/SPEC.2018.8635954
Yingxiang Peng, Kai Li, Jiancheng Zhao, Chuan Xie
The non-passivity features of the grid-connected voltage-source inverter (VSI) may cause interaction resonance in the weak grid. Enhancing the passivity of VSI output admittance can reduce the risk of interaction resonance between VSI and power grid. With the increase of phase-locked loop (PLL) bandwidth, the passivity of VSI output admittance is worse. Besides, the dq-frame single current control is less robust than the $alpha beta $-frame current control against the effect of PLL bandwidth changes. This paper proposes a q-axis modulation voltage compensation strategy to enhance the passivity of q-axis admittance. With the proposed strategy, the VSI output admittance has non-negative real part within wide PLL bandwidth. The simulation and experiment results show the effectiveness of the proposed approach.
{"title":"Passivity Enhancement for Three-Phase Grid-Connected Inverter in dq-frame","authors":"Yingxiang Peng, Kai Li, Jiancheng Zhao, Chuan Xie","doi":"10.1109/SPEC.2018.8635954","DOIUrl":"https://doi.org/10.1109/SPEC.2018.8635954","url":null,"abstract":"The non-passivity features of the grid-connected voltage-source inverter (VSI) may cause interaction resonance in the weak grid. Enhancing the passivity of VSI output admittance can reduce the risk of interaction resonance between VSI and power grid. With the increase of phase-locked loop (PLL) bandwidth, the passivity of VSI output admittance is worse. Besides, the dq-frame single current control is less robust than the $alpha beta $-frame current control against the effect of PLL bandwidth changes. This paper proposes a q-axis modulation voltage compensation strategy to enhance the passivity of q-axis admittance. With the proposed strategy, the VSI output admittance has non-negative real part within wide PLL bandwidth. The simulation and experiment results show the effectiveness of the proposed approach.","PeriodicalId":335893,"journal":{"name":"2018 IEEE 4th Southern Power Electronics Conference (SPEC)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128602830","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 : 2018-12-01DOI: 10.1109/SPEC.2018.8635927
Shweta Singh, A. Anvari‐Moghaddam
Speed and rotor position estimation is mandatory for vector control scheme of Permanent Magnet Synchronous Motor (PMSM). The estimation accuracy of Non-adaptive (Open loop) methods degrades as mechanical speed reduces. At lower speed, discrepancy in resistance and estimated stator flux values leads to significant impact on the steady state and transient performance of the drive system. The system becomes more robust against parameter mismatch and signal noises by employing adaptive observers for estimation of speed and flux. In this paper, a comprehensive analysis of sensor-based and sensorless based on sliding mode observer (SMO) techniques for vector control of PMSM is presented with regards to the steady- state and dynamic performance robustness against parameter sensitivity, stability and computational complexity. The synopsis of pros and cons of both observers are also discussed.
{"title":"Sensor-based and Sensorless Vector Control of PM Synchronous Motor Drives: A Comparative Study","authors":"Shweta Singh, A. Anvari‐Moghaddam","doi":"10.1109/SPEC.2018.8635927","DOIUrl":"https://doi.org/10.1109/SPEC.2018.8635927","url":null,"abstract":"Speed and rotor position estimation is mandatory for vector control scheme of Permanent Magnet Synchronous Motor (PMSM). The estimation accuracy of Non-adaptive (Open loop) methods degrades as mechanical speed reduces. At lower speed, discrepancy in resistance and estimated stator flux values leads to significant impact on the steady state and transient performance of the drive system. The system becomes more robust against parameter mismatch and signal noises by employing adaptive observers for estimation of speed and flux. In this paper, a comprehensive analysis of sensor-based and sensorless based on sliding mode observer (SMO) techniques for vector control of PMSM is presented with regards to the steady- state and dynamic performance robustness against parameter sensitivity, stability and computational complexity. The synopsis of pros and cons of both observers are also discussed.","PeriodicalId":335893,"journal":{"name":"2018 IEEE 4th Southern Power Electronics Conference (SPEC)","volume":"607 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116394540","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 : 2018-12-01DOI: 10.1109/SPEC.2018.8636025
Duc-Tri Do, Minh‐Khai Nguyen, Thanh-Hai Quach, Vinh-Thanh Tran, Cong-Bang Le, Kyoung-Won Lee, G. Cho
In this paper, a space vector pulse width modulation (SVPWM) strategy for the three-level quasi-switched boost T-type inverter (TL-qSBI) is presented. Under the SVPWM control method, the inductor current ripple of the TL-qSBI is reduced. In the proposed SVPWM technique, the shoot-through duty cycle is maintained constant to keep the modulation index as high as possible. Then, the only control parameters of the TL-qSBI are the duty cycles of the two additional switches. By controlling the duty cycles of the two additional switches, the voltage gain of the qSBT 2 I can be improved to a value larger than that of the conventional three-level impedance source inverters. The steady-state analysis and operating principles are presented. Simulation results validate the theoretical analysis.
{"title":"Space Vector Modulation Strategy for Three-Level Quasi-Switched Boost T-Type Inverter","authors":"Duc-Tri Do, Minh‐Khai Nguyen, Thanh-Hai Quach, Vinh-Thanh Tran, Cong-Bang Le, Kyoung-Won Lee, G. Cho","doi":"10.1109/SPEC.2018.8636025","DOIUrl":"https://doi.org/10.1109/SPEC.2018.8636025","url":null,"abstract":"In this paper, a space vector pulse width modulation (SVPWM) strategy for the three-level quasi-switched boost T-type inverter (TL-qSBI) is presented. Under the SVPWM control method, the inductor current ripple of the TL-qSBI is reduced. In the proposed SVPWM technique, the shoot-through duty cycle is maintained constant to keep the modulation index as high as possible. Then, the only control parameters of the TL-qSBI are the duty cycles of the two additional switches. By controlling the duty cycles of the two additional switches, the voltage gain of the qSBT 2 I can be improved to a value larger than that of the conventional three-level impedance source inverters. The steady-state analysis and operating principles are presented. Simulation results validate the theoretical analysis.","PeriodicalId":335893,"journal":{"name":"2018 IEEE 4th Southern Power Electronics Conference (SPEC)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127023152","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 : 2018-12-01DOI: 10.1109/SPEC.2018.8636092
Yoshiki Yamamoto, Tomoyuki Mannen
This paper proposes a three-phase unbalance compensation system using interleaved NPC inverter and a fast current regulation method. The proposed compensator can reduce in volume of passive filters and voltage and current stress on power devices by using NPC and interleaved circuit structure. The proposed current regulation method decouples interference between reactive and unbalance current compensation on d-q rotating frame. Experimental results of the unbalance compensation clarify the proposed system having a capability of a good compensation performance in steady states and a fast current response in transient states. The proposed system is applicable for wide load range and improving power quality of the grid.
{"title":"Three-Phase Unbalance Compensator Using Neutral Point Clamped Multilevel Interleaved Inverter","authors":"Yoshiki Yamamoto, Tomoyuki Mannen","doi":"10.1109/SPEC.2018.8636092","DOIUrl":"https://doi.org/10.1109/SPEC.2018.8636092","url":null,"abstract":"This paper proposes a three-phase unbalance compensation system using interleaved NPC inverter and a fast current regulation method. The proposed compensator can reduce in volume of passive filters and voltage and current stress on power devices by using NPC and interleaved circuit structure. The proposed current regulation method decouples interference between reactive and unbalance current compensation on d-q rotating frame. Experimental results of the unbalance compensation clarify the proposed system having a capability of a good compensation performance in steady states and a fast current response in transient states. The proposed system is applicable for wide load range and improving power quality of the grid.","PeriodicalId":335893,"journal":{"name":"2018 IEEE 4th Southern Power Electronics Conference (SPEC)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125215562","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 : 2018-12-01DOI: 10.1109/SPEC.2018.8635858
Q. Peng, Jingyang Fang, Yongheng Yang, F. Blaabjerg
With the still increasing penetration of renewable energy, the power system is being more power electronics based and digital. The diversity of grid-connected power converters with various control strategies complicates the analysis of system dynamics, when various and detailed converter models are adopted. This paper thus proposes a universal model of grid-connected converters that can reflect the essential power-internal voltage characteristics. With that, the diversity of converter outer controllers may be discarded, as their dynamics can be represented by the deviation of active and reactive power. In the proposed model, the transfer functions from the converter output power to the internal voltage and to the Phase-Locked Loop (PLL) output frequency are obtained, enabling the exploration of the stability of the internal voltage and the PLL performance. An example system is adopted to demonstrate the proposed model and simulated in PSCAD/EMTDC. The results show that the model is accurate to reflect the impact of controller parameters on the power-internal voltage stability of the entire system.
{"title":"A Universal Model for Grid-Connected Converters Reflecting Power-Internal Voltage Characteristics","authors":"Q. Peng, Jingyang Fang, Yongheng Yang, F. Blaabjerg","doi":"10.1109/SPEC.2018.8635858","DOIUrl":"https://doi.org/10.1109/SPEC.2018.8635858","url":null,"abstract":"With the still increasing penetration of renewable energy, the power system is being more power electronics based and digital. The diversity of grid-connected power converters with various control strategies complicates the analysis of system dynamics, when various and detailed converter models are adopted. This paper thus proposes a universal model of grid-connected converters that can reflect the essential power-internal voltage characteristics. With that, the diversity of converter outer controllers may be discarded, as their dynamics can be represented by the deviation of active and reactive power. In the proposed model, the transfer functions from the converter output power to the internal voltage and to the Phase-Locked Loop (PLL) output frequency are obtained, enabling the exploration of the stability of the internal voltage and the PLL performance. An example system is adopted to demonstrate the proposed model and simulated in PSCAD/EMTDC. The results show that the model is accurate to reflect the impact of controller parameters on the power-internal voltage stability of the entire system.","PeriodicalId":335893,"journal":{"name":"2018 IEEE 4th Southern Power Electronics Conference (SPEC)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130678674","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 : 2018-12-01DOI: 10.1109/SPEC.2018.8635831
T. Chakraborty, A. Anan, Sakhawat Hossen Rakib
In this paper, an experimental investigation has been carried out on single-phase multilevel inverter to obtain 21-level output voltage using cascaded four H-bridge units. The proposed system consists of four cascaded H-bridge MOSFET-based voltage source inverters, a microcontroller-based Arduino module, four separate input dc sources and isolating circuit. The gate drive signals for MOSFETs of the four H-bridge inverters are generated by using ATmega 2560 microcontroller-based Arduino board. The microcontroller has been used to reduce the complexity of generating gate drive signals for higher levels of inverter output voltage. Different-level output voltages have been obtained from experimental works. It is found that the proposed system requires less number of power switching devices and total harmonic distortion is reduced with increasing number of levels at the output voltage of the multilevel inverter.
{"title":"Experimental Investigation on Single-Phase Multilevel Inverter for Generating 21-Level Output Voltage Using Four H-Bridge Units","authors":"T. Chakraborty, A. Anan, Sakhawat Hossen Rakib","doi":"10.1109/SPEC.2018.8635831","DOIUrl":"https://doi.org/10.1109/SPEC.2018.8635831","url":null,"abstract":"In this paper, an experimental investigation has been carried out on single-phase multilevel inverter to obtain 21-level output voltage using cascaded four H-bridge units. The proposed system consists of four cascaded H-bridge MOSFET-based voltage source inverters, a microcontroller-based Arduino module, four separate input dc sources and isolating circuit. The gate drive signals for MOSFETs of the four H-bridge inverters are generated by using ATmega 2560 microcontroller-based Arduino board. The microcontroller has been used to reduce the complexity of generating gate drive signals for higher levels of inverter output voltage. Different-level output voltages have been obtained from experimental works. It is found that the proposed system requires less number of power switching devices and total harmonic distortion is reduced with increasing number of levels at the output voltage of the multilevel inverter.","PeriodicalId":335893,"journal":{"name":"2018 IEEE 4th Southern Power Electronics Conference (SPEC)","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134484293","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 : 2018-12-01DOI: 10.1109/SPEC.2018.8635968
Ondrej Bartik, L. Pohl
This paper is focused on the identification and the compensation of the two mass electro-mechanical system (electric motor and flexible load forming two mass system) with resonance. The methodology of this paper is based on the three-phase Permanent Magnet Synchronous Motor (PMSM) model with Field Oriented Control (FOC) and with the flexible load model. The resonant part is estimated with two approaches. The first one is the Recursive algorithm of the Least Squares Method (RLSM) and the second one is the Spectrum Analysis (SA), from their results the compensators are constructed in the discrete form for the implementation in a digital control system. In the case of the RLSM, the compensator is obtained as the inversion of the gained model of the resonant part in the discrete form. The compensator from SA is obtained as the result of iterative algorithm, where for each iteration there is gradual calculation of the compensator numerator and denominator The results of both experiments are contrasted with the resonant part of the model, to show the independency of the algorithms on the electrical part of the motor. The Pseudo Random Binary Sequence is used as the input signal for the identification experiments. Finally, the capability of the obtained estimates as the resonance compensators is evaluated in the final part of this paper Both presented methods are capable of the use for the self tuning algorithms.
{"title":"Mechanical resonant systems identification and compensation for the self tuning algorithms","authors":"Ondrej Bartik, L. Pohl","doi":"10.1109/SPEC.2018.8635968","DOIUrl":"https://doi.org/10.1109/SPEC.2018.8635968","url":null,"abstract":"This paper is focused on the identification and the compensation of the two mass electro-mechanical system (electric motor and flexible load forming two mass system) with resonance. The methodology of this paper is based on the three-phase Permanent Magnet Synchronous Motor (PMSM) model with Field Oriented Control (FOC) and with the flexible load model. The resonant part is estimated with two approaches. The first one is the Recursive algorithm of the Least Squares Method (RLSM) and the second one is the Spectrum Analysis (SA), from their results the compensators are constructed in the discrete form for the implementation in a digital control system. In the case of the RLSM, the compensator is obtained as the inversion of the gained model of the resonant part in the discrete form. The compensator from SA is obtained as the result of iterative algorithm, where for each iteration there is gradual calculation of the compensator numerator and denominator The results of both experiments are contrasted with the resonant part of the model, to show the independency of the algorithms on the electrical part of the motor. The Pseudo Random Binary Sequence is used as the input signal for the identification experiments. Finally, the capability of the obtained estimates as the resonance compensators is evaluated in the final part of this paper Both presented methods are capable of the use for the self tuning algorithms.","PeriodicalId":335893,"journal":{"name":"2018 IEEE 4th Southern Power Electronics Conference (SPEC)","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131947833","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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