Pub Date : 2023-02-19DOI: 10.1109/CPERE56564.2023.10119545
S. Mendy, X. Rong, O. Zinchenko, A. Saleh, M. Tousizadeh, O. Alatise, P. Mawby, Mohamed Taha
A motor emulator composed of a coupling inductor and a power converter provides a simplified and flexible drive inverter test rig that can be run with lower cost and faster implementation without a need for any moving element. The inductor coupling of the inverter under test and the motor emulator inverter plays a vital role in the construction of the currents in equivalence to the operation, loading condition of the emulated motor, and the smoothing of the current waveforms. Proper design of the inductor size can minimise the current ripples resulting from the power electronics switching devices to the limits of an actual motor application. This paper proposes a design method for sizing the coupling inductance between the two inverters. A comparison of the ripple current estimated by the design method, simulation results, and experimental results are used to validate the proposed sizing method.
{"title":"Inductor Design for an Automotive Propulsion Drive Power Hardware in the Loop Test Rig","authors":"S. Mendy, X. Rong, O. Zinchenko, A. Saleh, M. Tousizadeh, O. Alatise, P. Mawby, Mohamed Taha","doi":"10.1109/CPERE56564.2023.10119545","DOIUrl":"https://doi.org/10.1109/CPERE56564.2023.10119545","url":null,"abstract":"A motor emulator composed of a coupling inductor and a power converter provides a simplified and flexible drive inverter test rig that can be run with lower cost and faster implementation without a need for any moving element. The inductor coupling of the inverter under test and the motor emulator inverter plays a vital role in the construction of the currents in equivalence to the operation, loading condition of the emulated motor, and the smoothing of the current waveforms. Proper design of the inductor size can minimise the current ripples resulting from the power electronics switching devices to the limits of an actual motor application. This paper proposes a design method for sizing the coupling inductance between the two inverters. A comparison of the ripple current estimated by the design method, simulation results, and experimental results are used to validate the proposed sizing method.","PeriodicalId":169048,"journal":{"name":"2023 IEEE Conference on Power Electronics and Renewable Energy (CPERE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129221077","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 : 2023-02-19DOI: 10.1109/CPERE56564.2023.10119623
M. M. Samy, A. Shawky, M. Orabi
This paper presents a comparative analysis between Class-D, Class-E and Class-EF power amplifiers for inductive Power Transfer (IPT) systems that operate at multimegahertz frequencies such as 6. 78MHz and 13. 56MHz. The design guidelines of all topologies along with components selection are presented. An open-loop system for each topology is built in LT-Spice simulator for verification and all classes are designed to feed a constant power load of 30W. Input DC voltage, total voltage stress and total current stress of all utilized switching devices, and efficiency are measured in the comparison between all topologies. Also, the soft switching operation for all topologies is obtained and validated for fair comparison to work effectively in the mentioned high frequency. The main feature of Class D is the simplicity of the passive elements design and operation. However, it has additional switch compared to class E. In contrast, Class E has higher efficiency between all counterparts with using one switching device but needs carful design criterion to solve dependent load issue. Finally, Class EF PA has a complex design process and has many component counts.
{"title":"Comparative Analysis of Class-D, Class-E ,and Class EF Inverter Topologies for Multi-Megahertz","authors":"M. M. Samy, A. Shawky, M. Orabi","doi":"10.1109/CPERE56564.2023.10119623","DOIUrl":"https://doi.org/10.1109/CPERE56564.2023.10119623","url":null,"abstract":"This paper presents a comparative analysis between Class-D, Class-E and Class-EF power amplifiers for inductive Power Transfer (IPT) systems that operate at multimegahertz frequencies such as 6. 78MHz and 13. 56MHz. The design guidelines of all topologies along with components selection are presented. An open-loop system for each topology is built in LT-Spice simulator for verification and all classes are designed to feed a constant power load of 30W. Input DC voltage, total voltage stress and total current stress of all utilized switching devices, and efficiency are measured in the comparison between all topologies. Also, the soft switching operation for all topologies is obtained and validated for fair comparison to work effectively in the mentioned high frequency. The main feature of Class D is the simplicity of the passive elements design and operation. However, it has additional switch compared to class E. In contrast, Class E has higher efficiency between all counterparts with using one switching device but needs carful design criterion to solve dependent load issue. Finally, Class EF PA has a complex design process and has many component counts.","PeriodicalId":169048,"journal":{"name":"2023 IEEE Conference on Power Electronics and Renewable Energy (CPERE)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126234791","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 : 2023-02-19DOI: 10.1109/CPERE56564.2023.10119614
Mahmoud A. Mossa, M. Abdelhamid, A.A. Hassan
The current study concerns with introducing an efficient control approach which improves the dynamic performance of a grid connected doubly fed induction generator (DFIG) which is driven by a wind turbine. To prove the validation of the proposed control algorithm, the generator performance is evaluated under the proposed controller and under the model predictive direct torque control (MPDTC) as a classic predictive control type. After that, a comprehensive dynamic performance comparison is performed between the proposed controller and the MPDTC strategy to visualize the merits and shortages of each control technique to identify the most appropriate approach to be used with the DFIG. The results reveal and confirm the superiority of the formulated predictive control approach over the classic MPDTC, and this is illustrated through the fast-dynamic response, control simplicity, reduced ripples content and minimized computation burden. Moreover, the numerical results are showing a reduction in the total harmonic distortion (THD) with a percentage of 0.57% compared to MPDTC.
{"title":"Enhancing the Dynamic Performance of a Wind Driven Grid Connected DFIG Using an Effective Control Approach","authors":"Mahmoud A. Mossa, M. Abdelhamid, A.A. Hassan","doi":"10.1109/CPERE56564.2023.10119614","DOIUrl":"https://doi.org/10.1109/CPERE56564.2023.10119614","url":null,"abstract":"The current study concerns with introducing an efficient control approach which improves the dynamic performance of a grid connected doubly fed induction generator (DFIG) which is driven by a wind turbine. To prove the validation of the proposed control algorithm, the generator performance is evaluated under the proposed controller and under the model predictive direct torque control (MPDTC) as a classic predictive control type. After that, a comprehensive dynamic performance comparison is performed between the proposed controller and the MPDTC strategy to visualize the merits and shortages of each control technique to identify the most appropriate approach to be used with the DFIG. The results reveal and confirm the superiority of the formulated predictive control approach over the classic MPDTC, and this is illustrated through the fast-dynamic response, control simplicity, reduced ripples content and minimized computation burden. Moreover, the numerical results are showing a reduction in the total harmonic distortion (THD) with a percentage of 0.57% compared to MPDTC.","PeriodicalId":169048,"journal":{"name":"2023 IEEE Conference on Power Electronics and Renewable Energy (CPERE)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128886844","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 : 2023-02-19DOI: 10.1109/CPERE56564.2023.10119573
D. Zambrano-Prada, A. E. Aroudi, L. Vázquez-Seiszdedos, O. López-Santos, R. Haroun, L. Martínez-Salamero
Output voltage regulation in a boost converter with Constant Power Load (CPL) can be obtained by means of sliding-mode control with a linear estimation loop of the output power. The estimation procedure is a simple integrator of the output voltage error and confers an adaptive nature on the switching regulator. Two switching surfaces of quadratic type are considered to induce the sliding motions, and the corresponding conditions for the existence of both sliding mode and stability of the equilibrium point are derived. The resulting controller can be implemented using simple analog electronics requiring operational amplifier-based circuits in both cases plus a multiplier in one case and a multiplier and a divider in the other case. PSIM and MATLAB simulations show a fast recovery and zero steady-state output voltage error in response to large-signal disturbances in the output voltage and the load power.
{"title":"Adaptive Sliding Mode Control for a Boost Converter with Constant Power Load","authors":"D. Zambrano-Prada, A. E. Aroudi, L. Vázquez-Seiszdedos, O. López-Santos, R. Haroun, L. Martínez-Salamero","doi":"10.1109/CPERE56564.2023.10119573","DOIUrl":"https://doi.org/10.1109/CPERE56564.2023.10119573","url":null,"abstract":"Output voltage regulation in a boost converter with Constant Power Load (CPL) can be obtained by means of sliding-mode control with a linear estimation loop of the output power. The estimation procedure is a simple integrator of the output voltage error and confers an adaptive nature on the switching regulator. Two switching surfaces of quadratic type are considered to induce the sliding motions, and the corresponding conditions for the existence of both sliding mode and stability of the equilibrium point are derived. The resulting controller can be implemented using simple analog electronics requiring operational amplifier-based circuits in both cases plus a multiplier in one case and a multiplier and a divider in the other case. PSIM and MATLAB simulations show a fast recovery and zero steady-state output voltage error in response to large-signal disturbances in the output voltage and the load power.","PeriodicalId":169048,"journal":{"name":"2023 IEEE Conference on Power Electronics and Renewable Energy (CPERE)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128221881","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 : 2023-02-19DOI: 10.1109/CPERE56564.2023.10119568
M. Aly, E. A. Mohamed, H. Ramadan, A. Elmelegi, S. Said, E. Ahmed, A. Shawky, José Raúl Rodríguez Rodríguez
Numerous renewable energy source (RES) plants have lately been added to modern power grids. Power electronics converter systems (PECS) have become key components in the structures of these RESs for grid integration. However, PECS-based RESs result in decreased power system inertia, which reduces as penetration increases. Load frequency controllers (LFCs) have enhanced the performance of current power grids based on PECS. As a result, this study provides an optimal LFC structure based on merging characteristics from standard Tilt-Integral-Derivative (TID) and fractional order-based proportional-integral-derivative (FOPID) controllers in a novel combined FOTID LFC technique. The recently announced slime mould algorithm (SMA) was used to optimize the parameters of the proposed LFC. The results of a two-area RES-based power grid simulation are utilized to validate the proposed TFOID controller and the SMA-based design optimization.
{"title":"Optimized LFC Design for Future Low-Inertia Power Electronics Based Modern Power Grids","authors":"M. Aly, E. A. Mohamed, H. Ramadan, A. Elmelegi, S. Said, E. Ahmed, A. Shawky, José Raúl Rodríguez Rodríguez","doi":"10.1109/CPERE56564.2023.10119568","DOIUrl":"https://doi.org/10.1109/CPERE56564.2023.10119568","url":null,"abstract":"Numerous renewable energy source (RES) plants have lately been added to modern power grids. Power electronics converter systems (PECS) have become key components in the structures of these RESs for grid integration. However, PECS-based RESs result in decreased power system inertia, which reduces as penetration increases. Load frequency controllers (LFCs) have enhanced the performance of current power grids based on PECS. As a result, this study provides an optimal LFC structure based on merging characteristics from standard Tilt-Integral-Derivative (TID) and fractional order-based proportional-integral-derivative (FOPID) controllers in a novel combined FOTID LFC technique. The recently announced slime mould algorithm (SMA) was used to optimize the parameters of the proposed LFC. The results of a two-area RES-based power grid simulation are utilized to validate the proposed TFOID controller and the SMA-based design optimization.","PeriodicalId":169048,"journal":{"name":"2023 IEEE Conference on Power Electronics and Renewable Energy (CPERE)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133961300","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 : 2023-02-19DOI: 10.1109/CPERE56564.2023.10119634
B. Uytterhaegen, S. Ravyts, J. Mus, S. Schotte, F. Buysschaert, J. Cappelle
Energy storage using hydrogen is a key aspect of the energy transition. By means of fuel cells, the stored chemical energy can be converted again to electrical energy. Fuel cells have the advantage that the energy density is significantly higher, when compared to battery energy storage. Furthermore, the hydrogen storage container can be sized independently from the fuel cell itself, which simplifies the system design. However, a typical problem with fuel cells is the slow dynamic behaviour. For systems with fast transients, typically an auxiliary power source will be required, which in turn complicates system design. This paper presents a methodology to dimension the auxiliary power source based on a given load profile. The algorithm is then applied to three industrial case studies, thereby highlighting large differences between the applications.
{"title":"Dimensioning Lithium-ion Battery Packs and Fuel Cells for Hybrid Power Systems","authors":"B. Uytterhaegen, S. Ravyts, J. Mus, S. Schotte, F. Buysschaert, J. Cappelle","doi":"10.1109/CPERE56564.2023.10119634","DOIUrl":"https://doi.org/10.1109/CPERE56564.2023.10119634","url":null,"abstract":"Energy storage using hydrogen is a key aspect of the energy transition. By means of fuel cells, the stored chemical energy can be converted again to electrical energy. Fuel cells have the advantage that the energy density is significantly higher, when compared to battery energy storage. Furthermore, the hydrogen storage container can be sized independently from the fuel cell itself, which simplifies the system design. However, a typical problem with fuel cells is the slow dynamic behaviour. For systems with fast transients, typically an auxiliary power source will be required, which in turn complicates system design. This paper presents a methodology to dimension the auxiliary power source based on a given load profile. The algorithm is then applied to three industrial case studies, thereby highlighting large differences between the applications.","PeriodicalId":169048,"journal":{"name":"2023 IEEE Conference on Power Electronics and Renewable Energy (CPERE)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134319648","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 : 2023-02-19DOI: 10.1109/CPERE56564.2023.10119575
R. Nasrin, Tasmin Akter Tripty
Climate change and the exhaustion of conventional energy sources with the growing demand for energy have caused concern among researchers all over the world. Renewable energy sources are a long-term alternative to our reliance on fossil fuels and reduce carbon emissions. Solar energy is radiant light and heat from the Sun that is harnessed using a range of technologies such as solar power to generate electricity, solar thermal energy, and solar architecture. Photovoltaic thermal (PVT) is a hybrid system, which includes both thermal and electrical energy generations. A 3D solar photovoltaic and thermal hybrid system is considered in this study where the encloser of the heat exchanger is fabricated from corrosion resistive stainless-steel sheet, and uncovered surfaces to the air of the heat exchanger are insulated using the glass wool. The fins manual air circulation and the channels are made of aluminium. The top side of the fins is bended and tightly attached to the lower back floor of the solar PV panel, wherein heat switch from the PV panel to the fins happens via the conduction technique. The equations of the heat transfer for PV layers such as for glass, cell, fins, heat exchangers, and laminar flow equation for the fluid domain are solved numerically applying the finite element method (FEM). Temperatures of air at the inlet-outlet and solar cell of the PVT system, are obtained for the variation of solar irradiance from 200 to 400 W/m2 using the weather situation of Bangladesh. Finally, the overall efficiency is calculated under different weather conditions in Bangladesh. The numerical results depict that the new layout of the heat exchanger efficiently transfers heat to the circulating air and the overall efficiency of the PVT is greater at the lowest solar irradiance of 200 $mathrm{W}/mathrm{m}^{2}$.
{"title":"Numerical Evaluation of Overall Efficiency for Solar Photovoltaic and Thermal Hybrid System","authors":"R. Nasrin, Tasmin Akter Tripty","doi":"10.1109/CPERE56564.2023.10119575","DOIUrl":"https://doi.org/10.1109/CPERE56564.2023.10119575","url":null,"abstract":"Climate change and the exhaustion of conventional energy sources with the growing demand for energy have caused concern among researchers all over the world. Renewable energy sources are a long-term alternative to our reliance on fossil fuels and reduce carbon emissions. Solar energy is radiant light and heat from the Sun that is harnessed using a range of technologies such as solar power to generate electricity, solar thermal energy, and solar architecture. Photovoltaic thermal (PVT) is a hybrid system, which includes both thermal and electrical energy generations. A 3D solar photovoltaic and thermal hybrid system is considered in this study where the encloser of the heat exchanger is fabricated from corrosion resistive stainless-steel sheet, and uncovered surfaces to the air of the heat exchanger are insulated using the glass wool. The fins manual air circulation and the channels are made of aluminium. The top side of the fins is bended and tightly attached to the lower back floor of the solar PV panel, wherein heat switch from the PV panel to the fins happens via the conduction technique. The equations of the heat transfer for PV layers such as for glass, cell, fins, heat exchangers, and laminar flow equation for the fluid domain are solved numerically applying the finite element method (FEM). Temperatures of air at the inlet-outlet and solar cell of the PVT system, are obtained for the variation of solar irradiance from 200 to 400 W/m2 using the weather situation of Bangladesh. Finally, the overall efficiency is calculated under different weather conditions in Bangladesh. The numerical results depict that the new layout of the heat exchanger efficiently transfers heat to the circulating air and the overall efficiency of the PVT is greater at the lowest solar irradiance of 200 $mathrm{W}/mathrm{m}^{2}$.","PeriodicalId":169048,"journal":{"name":"2023 IEEE Conference on Power Electronics and Renewable Energy (CPERE)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114429800","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 : 2023-02-19DOI: 10.1109/CPERE56564.2023.10119582
Zheng Ma, Kristoffer Christensen, Magnus Vaerbak, Nicolas Fatras, D. A. Howard, B. Jørgensen
Demand response is important to integrate renewable energy sources into the energy system, and maintain frequency stability and security of supply. Demand-side management (DSM) is essential for energy consumers to participate in demand response. The adoption of DSM solutions relies on financial incentives, technology readiness, regulatory support, but also the adoption environment and conditions that vary in different regions. However, no available method facilitates this investigation process. This paper uses a case of residential DSM solutions in Denmark to introduce an ecosystem-based instrument that can systematically identify regional needs and evaluate potential DSM solutions. The case study shows several types of DSM appliances and services have been offered to residential consumers, covering certain parts of both implicit and explicit demand response. However, none of the existing DSM solutions has fully managed to target any identified opportunities. Furthermore, three aspects should be focused for promoting the adoption of the DSM solutions: 1) financial incentives for acquiring DSM-enabled technologies; 2) adoption of distributed energy resources; and 3) big data and AI enabled automatic load control.
{"title":"Ecosystem based Opportunity Identification and Feasibility Evaluation for Demand Side Management Solutions","authors":"Zheng Ma, Kristoffer Christensen, Magnus Vaerbak, Nicolas Fatras, D. A. Howard, B. Jørgensen","doi":"10.1109/CPERE56564.2023.10119582","DOIUrl":"https://doi.org/10.1109/CPERE56564.2023.10119582","url":null,"abstract":"Demand response is important to integrate renewable energy sources into the energy system, and maintain frequency stability and security of supply. Demand-side management (DSM) is essential for energy consumers to participate in demand response. The adoption of DSM solutions relies on financial incentives, technology readiness, regulatory support, but also the adoption environment and conditions that vary in different regions. However, no available method facilitates this investigation process. This paper uses a case of residential DSM solutions in Denmark to introduce an ecosystem-based instrument that can systematically identify regional needs and evaluate potential DSM solutions. The case study shows several types of DSM appliances and services have been offered to residential consumers, covering certain parts of both implicit and explicit demand response. However, none of the existing DSM solutions has fully managed to target any identified opportunities. Furthermore, three aspects should be focused for promoting the adoption of the DSM solutions: 1) financial incentives for acquiring DSM-enabled technologies; 2) adoption of distributed energy resources; and 3) big data and AI enabled automatic load control.","PeriodicalId":169048,"journal":{"name":"2023 IEEE Conference on Power Electronics and Renewable Energy (CPERE)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127804303","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 : 2023-02-19DOI: 10.1109/CPERE56564.2023.10119633
Amir R. Adly, Hossam Y. Abdul-Hamid, Asmaa Elhussiny, M. Zaky, E. E. EL-Kholy
The utilization of renewable energy resources using PV, wind turbines, and fuel cells, has grown significantly over the last decades in the power grids. This makes power electronic inverters an indispensable part of renewable energy systems as a necessary interface between these resources and the power grids. However, conventional two-level inverters (TLIs) cannot satisfy applications in high voltage ranges. Therefore, multilevel inverters (MLIs) are used for this purpose. MLIs have many advantages over conventional TLIs, particularly lower total harmonics distortion, lower electromagnetic interference, suitability for medium voltage-high power applications, minimizing dvldt across switches, higher efficiency, and larger DC link voltages. To align with high power demands, MLIs can create the desired number of levels. Recent MLIs topologies are produced with increased levels using fewer components resulting in cost minimization and increasing system reliability. Also, modulation techniques play a substantial role in improving the behavior of MLIs. This paper briefly reviews the different topologies of conventional TLIs and MLIs. A comparison between conventional TLI and MLIs is introduced. The basic concepts of the different topologies are discussed in detail. The merits, demerits, and applications of each topology are presented. The recent topologies of MLI are also highlighted. Control and modulation techniques are introduced.
{"title":"A Brief Review of the Conventional and Multilevel Inverters Topologies","authors":"Amir R. Adly, Hossam Y. Abdul-Hamid, Asmaa Elhussiny, M. Zaky, E. E. EL-Kholy","doi":"10.1109/CPERE56564.2023.10119633","DOIUrl":"https://doi.org/10.1109/CPERE56564.2023.10119633","url":null,"abstract":"The utilization of renewable energy resources using PV, wind turbines, and fuel cells, has grown significantly over the last decades in the power grids. This makes power electronic inverters an indispensable part of renewable energy systems as a necessary interface between these resources and the power grids. However, conventional two-level inverters (TLIs) cannot satisfy applications in high voltage ranges. Therefore, multilevel inverters (MLIs) are used for this purpose. MLIs have many advantages over conventional TLIs, particularly lower total harmonics distortion, lower electromagnetic interference, suitability for medium voltage-high power applications, minimizing dvldt across switches, higher efficiency, and larger DC link voltages. To align with high power demands, MLIs can create the desired number of levels. Recent MLIs topologies are produced with increased levels using fewer components resulting in cost minimization and increasing system reliability. Also, modulation techniques play a substantial role in improving the behavior of MLIs. This paper briefly reviews the different topologies of conventional TLIs and MLIs. A comparison between conventional TLI and MLIs is introduced. The basic concepts of the different topologies are discussed in detail. The merits, demerits, and applications of each topology are presented. The recent topologies of MLI are also highlighted. Control and modulation techniques are introduced.","PeriodicalId":169048,"journal":{"name":"2023 IEEE Conference on Power Electronics and Renewable Energy (CPERE)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129347182","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 : 2023-02-19DOI: 10.1109/CPERE56564.2023.10119608
Ahmed M. Abdelemam, Hatem H. Zeineldin, A. Al‐Durra, M. E. Moursi, E. El-Saadany
One of the main drawbacks of the Inverter Interfaced Distributed Generator (IIDG) is that the protection of the inverter switch limits the fault current through the inverter control system to be almost equal to the rated current. As a result, traditional overcurrent relays cannot operate to protect the distribution lines in islanded microgrid connected with IIDG during different types of short circuits. In this paper, a new protection scheme is proposed by utilizing the Discrete Wavelet Transform (DWT) to detect faults by extracting high-frequency current oscillations associated with short-circuit currents. The discrete wavelet energy is calculated from the DWT output, accumulated, and compared to the threshold value. The main advantages of this protection algorithm are that it does not need to depend on the short-circuit current increased values to detect the fault and communication is not required between relays. The proposed protection scheme is verified by using PSCAD / EMTDC simulation program. The results validate the proposed IIDG protection strategy by considering different fault types and locations.
{"title":"Inverter Based Islanded Microgrid Protection Using Discrete Wavelet Transform","authors":"Ahmed M. Abdelemam, Hatem H. Zeineldin, A. Al‐Durra, M. E. Moursi, E. El-Saadany","doi":"10.1109/CPERE56564.2023.10119608","DOIUrl":"https://doi.org/10.1109/CPERE56564.2023.10119608","url":null,"abstract":"One of the main drawbacks of the Inverter Interfaced Distributed Generator (IIDG) is that the protection of the inverter switch limits the fault current through the inverter control system to be almost equal to the rated current. As a result, traditional overcurrent relays cannot operate to protect the distribution lines in islanded microgrid connected with IIDG during different types of short circuits. In this paper, a new protection scheme is proposed by utilizing the Discrete Wavelet Transform (DWT) to detect faults by extracting high-frequency current oscillations associated with short-circuit currents. The discrete wavelet energy is calculated from the DWT output, accumulated, and compared to the threshold value. The main advantages of this protection algorithm are that it does not need to depend on the short-circuit current increased values to detect the fault and communication is not required between relays. The proposed protection scheme is verified by using PSCAD / EMTDC simulation program. The results validate the proposed IIDG protection strategy by considering different fault types and locations.","PeriodicalId":169048,"journal":{"name":"2023 IEEE Conference on Power Electronics and Renewable Energy (CPERE)","volume":"121 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132122208","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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