The semibridgrless active rectifier for inductively coupled power transfer (ICPT) system is proposed and the energy injection control for the semibridgeless active rectifier to realize the constant output voltage in this paper. Theoretical analysis show that with the proposed control strategy, the output voltage can be regulated without communication between the primary side and secondary side. The zero voltage switching (ZVS) of the inverter can be realized. Finally, the simulation results are provided, the feasibility and the good dynamic performance of the proposed strategy are verified.
{"title":"A Constant Output Voltage Control Strategy of Inductively Coupled Power Transfer System for Rail Transit System","authors":"Jixin Yang, Liming Shi, Zhenggang Yin, Wenjing Tang","doi":"10.1109/ITECAsia-Pacific56316.2022.9942100","DOIUrl":"https://doi.org/10.1109/ITECAsia-Pacific56316.2022.9942100","url":null,"abstract":"The semibridgrless active rectifier for inductively coupled power transfer (ICPT) system is proposed and the energy injection control for the semibridgeless active rectifier to realize the constant output voltage in this paper. Theoretical analysis show that with the proposed control strategy, the output voltage can be regulated without communication between the primary side and secondary side. The zero voltage switching (ZVS) of the inverter can be realized. Finally, the simulation results are provided, the feasibility and the good dynamic performance of the proposed strategy are verified.","PeriodicalId":45126,"journal":{"name":"Asia-Pacific Journal-Japan Focus","volume":"1970 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2022-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91358531","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 : 2022-10-28DOI: 10.1109/ITECAsia-Pacific56316.2022.9942159
Zhiyong Qu, Jing Lin, Xiaoqiong He
The three-phase to single-phase three-level converter is the core equipment in the advanced traction power supply system. The voltage equalization and second ripple on the dc-link are not conducive to not only distorting the three-phase grid side current and the inverter output voltage, but also leading to the degradation of the life of the power electronic converter devices. In this paper, a three-phase to single-phase three-level converter topology based on a symmetrical half-bridge active power decoupling circuit is proposed. This structure can maintain the balance of the two voltages on the dc-link and decouple the ripple power, thereby ensuring the instantaneous power flow balance between the three-phase grid side and the half-bridge decoupling circuit and the load, and can greatly reduce the number of required passive components and volume. In order to achieve proper closed-loop regulation, a unified coordinated control strategy for voltage equalization and second ripple is proposed.
{"title":"DC- Link Voltage Equalization and Second Ripple Suppression Control Strategy for Three-Phase To Single-Phase Converters","authors":"Zhiyong Qu, Jing Lin, Xiaoqiong He","doi":"10.1109/ITECAsia-Pacific56316.2022.9942159","DOIUrl":"https://doi.org/10.1109/ITECAsia-Pacific56316.2022.9942159","url":null,"abstract":"The three-phase to single-phase three-level converter is the core equipment in the advanced traction power supply system. The voltage equalization and second ripple on the dc-link are not conducive to not only distorting the three-phase grid side current and the inverter output voltage, but also leading to the degradation of the life of the power electronic converter devices. In this paper, a three-phase to single-phase three-level converter topology based on a symmetrical half-bridge active power decoupling circuit is proposed. This structure can maintain the balance of the two voltages on the dc-link and decouple the ripple power, thereby ensuring the instantaneous power flow balance between the three-phase grid side and the half-bridge decoupling circuit and the load, and can greatly reduce the number of required passive components and volume. In order to achieve proper closed-loop regulation, a unified coordinated control strategy for voltage equalization and second ripple is proposed.","PeriodicalId":45126,"journal":{"name":"Asia-Pacific Journal-Japan Focus","volume":"9 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2022-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80945640","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 : 2022-10-28DOI: 10.1109/ITECAsia-Pacific56316.2022.9941749
Guohua Li, Shuai Xu, Chunxing Yao, Guanzhou Ren, G. Ma
This paper proposes an open-circuit (OC) fault diagnosis method for three-level active neutral-point-clamped (3L-ANPC) inverter based on model predictive control (MPC). In this method, the predictive current model is used to predict and estimate phase current under normal and faulty conditions. The OC fault can be detected by comparing the residual between estimated phase current and measured phase current with the threshold. The detected fault is further localized through a fault localization matrix, every element of the matrix corresponds to a switch in 3L-ANPC inverter. The matrix is updated by the compared results between actual measured phase current and the estimated phase current considering the possible switch OC faults. The utilized phase current signals are also necessary in the MPC algorithm, so the proposed fault diagnosis method does not require any additional sensors. Moreover, the fast dynamic characteristic is derived from the MPC. Simulation results are obtained from a 3L-ANPC inverter fed permanent magnet synchronous motor (PMSM) drives, verifying the effectiveness of the proposed diagnosis method.
{"title":"Open-Circuit Fault Diagnosis for Three-Level ANPC Inverter Fed PMSM Drives with Model Predictive Control","authors":"Guohua Li, Shuai Xu, Chunxing Yao, Guanzhou Ren, G. Ma","doi":"10.1109/ITECAsia-Pacific56316.2022.9941749","DOIUrl":"https://doi.org/10.1109/ITECAsia-Pacific56316.2022.9941749","url":null,"abstract":"This paper proposes an open-circuit (OC) fault diagnosis method for three-level active neutral-point-clamped (3L-ANPC) inverter based on model predictive control (MPC). In this method, the predictive current model is used to predict and estimate phase current under normal and faulty conditions. The OC fault can be detected by comparing the residual between estimated phase current and measured phase current with the threshold. The detected fault is further localized through a fault localization matrix, every element of the matrix corresponds to a switch in 3L-ANPC inverter. The matrix is updated by the compared results between actual measured phase current and the estimated phase current considering the possible switch OC faults. The utilized phase current signals are also necessary in the MPC algorithm, so the proposed fault diagnosis method does not require any additional sensors. Moreover, the fast dynamic characteristic is derived from the MPC. Simulation results are obtained from a 3L-ANPC inverter fed permanent magnet synchronous motor (PMSM) drives, verifying the effectiveness of the proposed diagnosis method.","PeriodicalId":45126,"journal":{"name":"Asia-Pacific Journal-Japan Focus","volume":"4 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2022-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78793717","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 : 2022-10-28DOI: 10.1109/ITECAsia-Pacific56316.2022.9941994
Zhaoxiang Chen, Mingyao Ma, Ning Wang
Online monitoring of insulated gate bipolar transistor (IGBT) modules is an effective way to improve the reliability of inverters. This paper proposes a method for online monitoring of IGBT’s bond wires in single-phase three-level neutral point clamped inverters. The proposed method has a negligible impact on the output current of the inverter, the key of which is to clamp one leg of the inverter to the O state by zero-sequence component injection at the monitoring time. Based on this method, we can create an online monitoring environment to inject monitoring current into the idle IGBT. By sampling the collector-emitter saturation voltage during monitoring, the health state of the IGBT can be obtained. Calculations and simulations show that clamping duration is more significant than the one required for single monitoring, even under the worst conditions.
{"title":"An Online Monitoring Method for IGBT Modules in Single-Phase Three-Level Neutral Point Clamped Inverters","authors":"Zhaoxiang Chen, Mingyao Ma, Ning Wang","doi":"10.1109/ITECAsia-Pacific56316.2022.9941994","DOIUrl":"https://doi.org/10.1109/ITECAsia-Pacific56316.2022.9941994","url":null,"abstract":"Online monitoring of insulated gate bipolar transistor (IGBT) modules is an effective way to improve the reliability of inverters. This paper proposes a method for online monitoring of IGBT’s bond wires in single-phase three-level neutral point clamped inverters. The proposed method has a negligible impact on the output current of the inverter, the key of which is to clamp one leg of the inverter to the O state by zero-sequence component injection at the monitoring time. Based on this method, we can create an online monitoring environment to inject monitoring current into the idle IGBT. By sampling the collector-emitter saturation voltage during monitoring, the health state of the IGBT can be obtained. Calculations and simulations show that clamping duration is more significant than the one required for single monitoring, even under the worst conditions.","PeriodicalId":45126,"journal":{"name":"Asia-Pacific Journal-Japan Focus","volume":"44 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2022-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73409391","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 : 2022-10-28DOI: 10.1109/ITECAsia-Pacific56316.2022.9941931
Dongyang Li, Chunyang Gu, Shuo Wang, He Zhang, C. Gerada, R. Camilleri, Yue Zhang
PM-Assisted synchronous reluctance machines (PMSynRM) show large speed fluctuations and poor dynamic response when encountering a large disturbance. Additionally, the PI controller is not capable of eliminating steady-state errors when disturbances are encountered. An extended state observer (ESO) based control method is proposed in this paper to resolve these problems. Thanks to the proposed control strategy, the ESO can detect and provide feedback to the controller in a short period of time, which allows it to respond in a timely manner. Speed Control accuracy is increased, and response time is reduced simultaneously as a result. Meanwhile, stability analysis is implemented to determine the stability condition of the observer, so that optimized observer parameters could be obtained. The ESO-based control strategy is effective at reducing dynamic response time and increasing control accuracy, according to simulations.
{"title":"An Improved Control Strategy of PM-Assisted Synchronous Reluctance Machines Based on an Extended State Observer","authors":"Dongyang Li, Chunyang Gu, Shuo Wang, He Zhang, C. Gerada, R. Camilleri, Yue Zhang","doi":"10.1109/ITECAsia-Pacific56316.2022.9941931","DOIUrl":"https://doi.org/10.1109/ITECAsia-Pacific56316.2022.9941931","url":null,"abstract":"PM-Assisted synchronous reluctance machines (PMSynRM) show large speed fluctuations and poor dynamic response when encountering a large disturbance. Additionally, the PI controller is not capable of eliminating steady-state errors when disturbances are encountered. An extended state observer (ESO) based control method is proposed in this paper to resolve these problems. Thanks to the proposed control strategy, the ESO can detect and provide feedback to the controller in a short period of time, which allows it to respond in a timely manner. Speed Control accuracy is increased, and response time is reduced simultaneously as a result. Meanwhile, stability analysis is implemented to determine the stability condition of the observer, so that optimized observer parameters could be obtained. The ESO-based control strategy is effective at reducing dynamic response time and increasing control accuracy, according to simulations.","PeriodicalId":45126,"journal":{"name":"Asia-Pacific Journal-Japan Focus","volume":"48 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2022-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72558711","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 : 2022-10-28DOI: 10.1109/ITECAsia-Pacific56316.2022.9941944
Cheng Tang, Qianming Xu, Rong Han, Peng Guo, R. Liu, Zhuo Qing
The power modules become one of the most fragile and vulnerable components. To address this problem, the thermal performance of silicon carbide metal-oxide-semiconductor field-effect transistor (SiC-MOSFET) and silicon insulated gate bipolar transistor (Si-IGBT) is compared and evaluated in this paper. Firstly, the loss calculations and distribution of SiC-MOSFET and Si-IGBT are analyzed. Next, the junction temperature swing of SiC-MOSFET and Si-IGBT is calculated by the thermal resistance network method, and the analysis of the junction temperature swing at different influencing factors is elaborated. Then, a thermal platform based on optical fiber thermometer is built and experimental results are provided to validate the claims. Finally, the thermal properties of SiC-MOSFET and Si-IGBT are summarized to provide the theoretical reference for engineering applications.
{"title":"Comparison and evaluation of the thermal performance between SiC-MOSFET and Si-IGBT","authors":"Cheng Tang, Qianming Xu, Rong Han, Peng Guo, R. Liu, Zhuo Qing","doi":"10.1109/ITECAsia-Pacific56316.2022.9941944","DOIUrl":"https://doi.org/10.1109/ITECAsia-Pacific56316.2022.9941944","url":null,"abstract":"The power modules become one of the most fragile and vulnerable components. To address this problem, the thermal performance of silicon carbide metal-oxide-semiconductor field-effect transistor (SiC-MOSFET) and silicon insulated gate bipolar transistor (Si-IGBT) is compared and evaluated in this paper. Firstly, the loss calculations and distribution of SiC-MOSFET and Si-IGBT are analyzed. Next, the junction temperature swing of SiC-MOSFET and Si-IGBT is calculated by the thermal resistance network method, and the analysis of the junction temperature swing at different influencing factors is elaborated. Then, a thermal platform based on optical fiber thermometer is built and experimental results are provided to validate the claims. Finally, the thermal properties of SiC-MOSFET and Si-IGBT are summarized to provide the theoretical reference for engineering applications.","PeriodicalId":45126,"journal":{"name":"Asia-Pacific Journal-Japan Focus","volume":"62 3","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2022-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72610136","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 : 2022-10-28DOI: 10.1109/ITECAsia-Pacific56316.2022.9942076
Junli Zhang, W. Hua, Yuan Gao, Yuchen Wang, Hengliang Zhang
The uncertainties of electrical machines manufacturing decrease the prediction precision of traditional multi-objective optimization methods based on Kriging surrogate model. Existing robust optimization method requires a large amount of calculation time. In order to improve the accurateness and release the computational burden of the Kriging surrogate model method in the robust optimization, two genetic algorithm (GA)-based optimization methods with different sample principles are proposed and compared. The one is adding the final optimization result of GA as the samples into the surrogate model, while the other one is adding the samples from the GA process for the target surrogate model. Taking a 12-slot 14-pole interior permanent magnet (IPM) machine as a case study, the simulation results show that the latter one is more accurate than the former. Furthermore, the comparison between the deterministic optimization and robust optimization in the case study demonstrates the superior of the second GA method.
{"title":"An improved Kriging surrogate model method with high robustness for electrical machine optimization","authors":"Junli Zhang, W. Hua, Yuan Gao, Yuchen Wang, Hengliang Zhang","doi":"10.1109/ITECAsia-Pacific56316.2022.9942076","DOIUrl":"https://doi.org/10.1109/ITECAsia-Pacific56316.2022.9942076","url":null,"abstract":"The uncertainties of electrical machines manufacturing decrease the prediction precision of traditional multi-objective optimization methods based on Kriging surrogate model. Existing robust optimization method requires a large amount of calculation time. In order to improve the accurateness and release the computational burden of the Kriging surrogate model method in the robust optimization, two genetic algorithm (GA)-based optimization methods with different sample principles are proposed and compared. The one is adding the final optimization result of GA as the samples into the surrogate model, while the other one is adding the samples from the GA process for the target surrogate model. Taking a 12-slot 14-pole interior permanent magnet (IPM) machine as a case study, the simulation results show that the latter one is more accurate than the former. Furthermore, the comparison between the deterministic optimization and robust optimization in the case study demonstrates the superior of the second GA method.","PeriodicalId":45126,"journal":{"name":"Asia-Pacific Journal-Japan Focus","volume":"40 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2022-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77188465","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 : 2022-10-28DOI: 10.1109/ITECAsia-Pacific56316.2022.9941910
D. Du, Jian Zhang, Youtong Fang, Jie Tian
Motor Bearing vibration signal contains its operating state information and can be used for bearing fault diagnosis. Facing the nonlinear and non-stationary signal of bearing vibration, the accuracy of existing methods still needs to be improved. In this paper, Hilbert-Huang transform is proposed to process these signals and obtain the time frequency spectrums. Then Convolutional neural network is applied to diagnose bearing faults for its perfect ability of image recognition. Comparing with other signal processing methods, this method achieves better accuracy.
{"title":"Motor Bearing Fault Diagnosis based on Hilbert-Huang transform and Convolutional Neural Networks","authors":"D. Du, Jian Zhang, Youtong Fang, Jie Tian","doi":"10.1109/ITECAsia-Pacific56316.2022.9941910","DOIUrl":"https://doi.org/10.1109/ITECAsia-Pacific56316.2022.9941910","url":null,"abstract":"Motor Bearing vibration signal contains its operating state information and can be used for bearing fault diagnosis. Facing the nonlinear and non-stationary signal of bearing vibration, the accuracy of existing methods still needs to be improved. In this paper, Hilbert-Huang transform is proposed to process these signals and obtain the time frequency spectrums. Then Convolutional neural network is applied to diagnose bearing faults for its perfect ability of image recognition. Comparing with other signal processing methods, this method achieves better accuracy.","PeriodicalId":45126,"journal":{"name":"Asia-Pacific Journal-Japan Focus","volume":"91 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2022-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86190667","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 : 2022-10-28DOI: 10.1109/ITECAsia-Pacific56316.2022.9941900
Xiaofeng Xu, Xiaoyan Huang, Zhaokai Li
Extensive research has shown that the control technique of permanent magnet synchronous motors (PMSMs) is relatively mature using high precision position sensors with the penalty of high hardware cost. On the other hand, the sensorless control has demonstrated many advantages, but its application with heavy loading is limited. In this paper, a rotor position correction method using low-resolution Hall-effect sensors is proposed, which shows the advantage of low cost and high estimation precision. The exact discrete-time voltage equation model is utilized to obtain accurate speed information, and a speed estimation observer with average speed calculated using Hall signal is adopted to make rotor position converge to exact location. Simulation verifies the effectiveness of the method including the steady and dynamic performance.
{"title":"An Improved Rotor Position Estimation Method for PMSM Using Low-Resolution Hall-Effect Sensors","authors":"Xiaofeng Xu, Xiaoyan Huang, Zhaokai Li","doi":"10.1109/ITECAsia-Pacific56316.2022.9941900","DOIUrl":"https://doi.org/10.1109/ITECAsia-Pacific56316.2022.9941900","url":null,"abstract":"Extensive research has shown that the control technique of permanent magnet synchronous motors (PMSMs) is relatively mature using high precision position sensors with the penalty of high hardware cost. On the other hand, the sensorless control has demonstrated many advantages, but its application with heavy loading is limited. In this paper, a rotor position correction method using low-resolution Hall-effect sensors is proposed, which shows the advantage of low cost and high estimation precision. The exact discrete-time voltage equation model is utilized to obtain accurate speed information, and a speed estimation observer with average speed calculated using Hall signal is adopted to make rotor position converge to exact location. Simulation verifies the effectiveness of the method including the steady and dynamic performance.","PeriodicalId":45126,"journal":{"name":"Asia-Pacific Journal-Japan Focus","volume":"57 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2022-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90900767","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 : 2022-10-28DOI: 10.1109/ITECAsia-Pacific56316.2022.9941813
Qingling Luo, Xuanlyu Wu, Bei Wang, Jingru Yang, Xiaohua Wu
Permanent Magnet (PM) Machine based S/G system has huge advantages in terms of efficiency, power density, power-weight ratio, power quality and EMI. With the development in PM machine design and power electronics technology, PMS/G system is gaining more attention not only in low-power subsystems, but also in primary high-power systems. When the PM machine has salient pole rotor or the internal resistance is not negligible or both, there is obvious coupling between d-axis current and output power. However, in conventional control approach, the effect of d-axis current on output power is not compensated for in the q-axis current, which leads to unsatisfied control performance. This paper proposed a power decoupling control approach for PMS/G system in generating mode. The power coupling effect is mitigated which delivers improved control performance. Moreover, the output signal of voltage controller can always accurately reflect output power, which can be utilized for instantaneous power control and monitoring. The proposed approach is verified both by simulation and experiment.
{"title":"Power Decoupling Control of Permanent Magnet Generating System","authors":"Qingling Luo, Xuanlyu Wu, Bei Wang, Jingru Yang, Xiaohua Wu","doi":"10.1109/ITECAsia-Pacific56316.2022.9941813","DOIUrl":"https://doi.org/10.1109/ITECAsia-Pacific56316.2022.9941813","url":null,"abstract":"Permanent Magnet (PM) Machine based S/G system has huge advantages in terms of efficiency, power density, power-weight ratio, power quality and EMI. With the development in PM machine design and power electronics technology, PMS/G system is gaining more attention not only in low-power subsystems, but also in primary high-power systems. When the PM machine has salient pole rotor or the internal resistance is not negligible or both, there is obvious coupling between d-axis current and output power. However, in conventional control approach, the effect of d-axis current on output power is not compensated for in the q-axis current, which leads to unsatisfied control performance. This paper proposed a power decoupling control approach for PMS/G system in generating mode. The power coupling effect is mitigated which delivers improved control performance. Moreover, the output signal of voltage controller can always accurately reflect output power, which can be utilized for instantaneous power control and monitoring. The proposed approach is verified both by simulation and experiment.","PeriodicalId":45126,"journal":{"name":"Asia-Pacific Journal-Japan Focus","volume":"30 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2022-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88123861","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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