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A Comprehensive Comparison Study of Planar Circular and Square Couplers for IPT Applications 用于IPT应用的平面圆形和方形耦合器的综合比较研究
Asia-Pacific Journal-Japan Focus Pub Date : 2022-10-28 DOI: 10.1109/ITECAsia-Pacific56316.2022.9941959
Jing Xiao, Xiaorui Wu, Wenlan Gong, Xiufang Liu, Shaonan Chen, Yousu Yao
{"title":"A Comprehensive Comparison Study of Planar Circular and Square Couplers for IPT Applications","authors":"Jing Xiao, Xiaorui Wu, Wenlan Gong, Xiufang Liu, Shaonan Chen, Yousu Yao","doi":"10.1109/ITECAsia-Pacific56316.2022.9941959","DOIUrl":"https://doi.org/10.1109/ITECAsia-Pacific56316.2022.9941959","url":null,"abstract":"Planar circular and square couplers (PCC and PSC) are two magnetic couplers that are most frequently employed in inductive power transfer (IPT) systems. However, PCC and PSC are not comprehensively compared. As a result, which coupler should be employed in a specific application is unclear. This paper compares PCC and PSC in terms of coupling coefficient, self-inductance factor, misalignment tolerance, coupler quality factor, cost, weight, and size. To make the comparison fair, PCC and PSC are firstly optimized. Two control IPT systems, one employing PCC while the other utilizing PSC, are built in PSIM. The advantages and disadvantages of PCC and PSC are further verified. PCC outperforms PSC in cost, weight, size, and coupler quality factor, but PSC performs better in coupling coefficient, self-inductance factor, and misalignment tolerance. Hence, PSC is preferable in most applications except rotating case.","PeriodicalId":45126,"journal":{"name":"Asia-Pacific Journal-Japan Focus","volume":"19 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":"90358353","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}
引用次数: 0
Online Junction Temperature Monitoring for Discrete SiC MOSFET Based on On-state Voltage at High Temperature 基于高温导通电压的离散SiC MOSFET结温在线监测
Asia-Pacific Journal-Japan Focus Pub Date : 2022-10-28 DOI: 10.1109/ITECAsia-Pacific56316.2022.9941977
Haoran Hu, Zhiqiang Wang, Yimin Zhou, Da Zhou, Guoqing Xin, Xiaojie Shi
{"title":"Online Junction Temperature Monitoring for Discrete SiC MOSFET Based on On-state Voltage at High Temperature","authors":"Haoran Hu, Zhiqiang Wang, Yimin Zhou, Da Zhou, Guoqing Xin, Xiaojie Shi","doi":"10.1109/ITECAsia-Pacific56316.2022.9941977","DOIUrl":"https://doi.org/10.1109/ITECAsia-Pacific56316.2022.9941977","url":null,"abstract":"Junction temperature monitoring is crucial for condition monitoring and thermal management of power semiconductor devices. In this paper, the online monitoring of junction temperature for discrete SiC MOSFETs is achieved by simultaneous measurements of their on-state voltage and current. A dedicated calibration circuit that decouples switching and conduction losses is used to obtain a look-up table for the junction temperature. According to the test results, under the operating condition with current of 50 A and temperature of $175^{circ} C$, a single pulse test of $10 mu$ can cause a temperature rise of 8-9 $^{circ} C$, due to the self-heating effect of the discrete SiC MOSFETs. This temperature rise of DUT during the calibration test is compensated by the Foster network thermal model of the device afterwards.","PeriodicalId":45126,"journal":{"name":"Asia-Pacific Journal-Japan Focus","volume":"18 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":"90157860","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}
引用次数: 2
Modulation and Voltage Balance Control of a Four-Level ANPC H-Bridge Converter for Ship Medium-Voltage Propulsion Systems 船舶中压推进系统四电平ANPC h桥变换器的调制与电压平衡控制
Asia-Pacific Journal-Japan Focus Pub Date : 2022-10-28 DOI: 10.1109/ITECAsia-Pacific56316.2022.9942139
Wei Zhou, Huasong Fang, Nianzhou Liu, Kui Wang, Zedong Zheng, Yongdong Li
{"title":"Modulation and Voltage Balance Control of a Four-Level ANPC H-Bridge Converter for Ship Medium-Voltage Propulsion Systems","authors":"Wei Zhou, Huasong Fang, Nianzhou Liu, Kui Wang, Zedong Zheng, Yongdong Li","doi":"10.1109/ITECAsia-Pacific56316.2022.9942139","DOIUrl":"https://doi.org/10.1109/ITECAsia-Pacific56316.2022.9942139","url":null,"abstract":"Aiming at a new generation of medium voltage DC (MVDC) power propulsion system for new ship integrated power system (IPS), this paper proposes an active neutral-point-clamped (ANPC) H-bridge structure, which directly connects two four-level ANPC topologies. Without any flying capacitors, this topology has high power density, and can be used in 6 kV voltage level. To address the problem of unbalanced neutral-point (NP) voltage, this paper derives a mathematical model of NP voltage and uses a combination of COPWM modulation strategy and fine-tuned duty cycle to achieve balanced control of the NP voltage by software. Simulation and experimental results prove the rationality and validity of the proposed method.","PeriodicalId":45126,"journal":{"name":"Asia-Pacific Journal-Japan Focus","volume":"12 3 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":"90749382","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}
引用次数: 0
Thermal Design of Air-Cooled YASA AFPM Motor with Heat Pipes 带热管的风冷YASA AFPM电机的热设计
Asia-Pacific Journal-Japan Focus Pub Date : 2022-10-28 DOI: 10.1109/ITECAsia-Pacific56316.2022.9942017
Yuqing Zhang, Weiwei Geng, Qiang Li
{"title":"Thermal Design of Air-Cooled YASA AFPM Motor with Heat Pipes","authors":"Yuqing Zhang, Weiwei Geng, Qiang Li","doi":"10.1109/ITECAsia-Pacific56316.2022.9942017","DOIUrl":"https://doi.org/10.1109/ITECAsia-Pacific56316.2022.9942017","url":null,"abstract":"This paper proposes a new forced air cooling with heat pipe auxiliary for yokeless and segmented armature (YASA) axial flux permanent magnet (AFPM) motors. Since the heat transfer path of stator for single stator double rotor (SSDR) AFPM machine is restricted, the heat pipes provide auxiliary heat dissipation paths for the windings and stator. Firstly, the winding cooling structure with auxiliary heat pipes of YASA AFPM motor is introduced because the introduction of heat pipe will occupy winding space and itself will also produce loss due to flux leakage in slots, the optimization of winding loss and heat pipe size becomes a key issue. Then, fins are added to the surface of the shell and end covers to increase the heat dissipation area and enhance convection heat exchange. Based on the Computational Fluid Dynamics (CFD), the size of the heat pipe and the fins get optimized in this paper. The temperature distribution of YASA AFPM motor are obtained. The results show that when the length, width, and height is respectively set to 18mm, 5mm, and 102.5 mm, the interaction between the thermal and electromagnetic performance reduces the peak temperature of YASA AFPM to $146.31 ^{circ}mathrm{C}$, which has certain reference significance for improving the operational reliability of the AFPM synchronous motors in YASA structures.","PeriodicalId":45126,"journal":{"name":"Asia-Pacific Journal-Japan Focus","volume":"24 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":"86831280","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}
引用次数: 0
Torque Improvement of Dual Three-phase YASA Machine Based on Current Harmonics Injection 基于电流谐波注入的双三相YASA电机转矩改进
Asia-Pacific Journal-Japan Focus Pub Date : 2022-10-28 DOI: 10.1109/ITECAsia-Pacific56316.2022.9941832
Xu Yan, Zhongze Wu, Lingyun Shao, W. Hua, Zhuoran Zhang, Ming-Ming Cheng
{"title":"Torque Improvement of Dual Three-phase YASA Machine Based on Current Harmonics Injection","authors":"Xu Yan, Zhongze Wu, Lingyun Shao, W. Hua, Zhuoran Zhang, Ming-Ming Cheng","doi":"10.1109/ITECAsia-Pacific56316.2022.9941832","DOIUrl":"https://doi.org/10.1109/ITECAsia-Pacific56316.2022.9941832","url":null,"abstract":"The method for enhancing the torque capability of the dual three-phase yokeless and segmented armature (YASA) axial flux permanent magnet machine by injecting the 5th and 7th current harmonics is proposed in this paper. The mathematical model of the dual three-phase YASA machine considering the 5th and 7th harmonics of the open-circuit flux-linkage is established based on vector space decomposition method. The parametric model and vector control systems with and without the 5th and 7th current harmonics injection of the dual three-phase YASA machine are built to verify the effectiveness of torque enhancement by current harmonics injection. The simulation results show that the torque per peak current of the analyzed YASA machine can be improved by 8.74% by injecting 5th and 7th current harmonics.","PeriodicalId":45126,"journal":{"name":"Asia-Pacific Journal-Japan Focus","volume":"22 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":"91303287","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}
引用次数: 0
A method for SiC MOSFETs gate oxide degradation monitoring based on turn-on di/dt delay time 基于导通di/dt延迟时间的SiC mosfet栅极氧化退化监测方法
Asia-Pacific Journal-Japan Focus Pub Date : 2022-10-28 DOI: 10.1109/ITECAsia-Pacific56316.2022.9941951
Jianlong Kang, Qiang Wu, Yu Chen, He Xu, Haoze Luo, Zhen Xin
{"title":"A method for SiC MOSFETs gate oxide degradation monitoring based on turn-on di/dt delay time","authors":"Jianlong Kang, Qiang Wu, Yu Chen, He Xu, Haoze Luo, Zhen Xin","doi":"10.1109/ITECAsia-Pacific56316.2022.9941951","DOIUrl":"https://doi.org/10.1109/ITECAsia-Pacific56316.2022.9941951","url":null,"abstract":"This paper presents a method for SiC MOSFET gate oxide degradation monitoring based on turn-on di/dt delay time (di/dt-delay). The physical mechanism of turn-on di/dt shift with gate oxide degradation is first analyzed. Then, high-temperature gate bias tests are applied to two kinds of devices to accelerate gate oxide degradation. The aging test shows that turn-on di/dt-delay can be used as a precursor for SiC MOSFET gate oxide degradation with detectable amplitude shift. Subsequently, a di/dt-delay extraction circuit based on the parasitic inductance of SiC MOSFET power source pin is designed. Finally, the validity of the extraction circuit is verified by double-pulse tests.","PeriodicalId":45126,"journal":{"name":"Asia-Pacific Journal-Japan Focus","volume":"4 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":"80332399","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}
引用次数: 0
Optimal Voltage Recovery Control Scheme of Wind Farm Based on Topology Reconfiguration 基于拓扑重构的风电场电压恢复优化控制方案
Asia-Pacific Journal-Japan Focus Pub Date : 2022-10-28 DOI: 10.1109/ITECAsia-Pacific56316.2022.9942187
Shuaifeng Wang, Hanzhi Peng, Juan Wei, Guohang Huang, Sheng Huang, Lai Wei
{"title":"Optimal Voltage Recovery Control Scheme of Wind Farm Based on Topology Reconfiguration","authors":"Shuaifeng Wang, Hanzhi Peng, Juan Wei, Guohang Huang, Sheng Huang, Lai Wei","doi":"10.1109/ITECAsia-Pacific56316.2022.9942187","DOIUrl":"https://doi.org/10.1109/ITECAsia-Pacific56316.2022.9942187","url":null,"abstract":"The collector line in wind farms (WFs) voltage sags may result in tripping the WT and consequently threaten the stability and security of wind farms (WFs). In this paper, the control scheme of WFs based on topology reconfiguration is proposed to recover the voltage of faulty WTs terminals and ensure the safe operation of the large-scale WFs. During the closed-loop process of collector lines, the impedance matrices of all closed-loop schemes are pre-calculated to get an approximation of the inrush current. The closed-loop positions of collector lines are optimized based on the integer second-order cone programming by considering the contact line cost and average voltage deviation. Finally, the fault is isolated by circuit breakers to recover the flow direction of WFs. The effectiveness of the proposed closed-loop scheme is validated in Matlab.","PeriodicalId":45126,"journal":{"name":"Asia-Pacific Journal-Japan Focus","volume":"14 1","pages":"1-7"},"PeriodicalIF":0.0,"publicationDate":"2022-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76438753","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}
引用次数: 0
Analysis of High Step-up Switched Capacitor DC-DC Converter Based on Coupled Inductors 基于耦合电感的高升压开关电容DC-DC变换器分析
Asia-Pacific Journal-Japan Focus Pub Date : 2022-10-28 DOI: 10.1109/ITECAsia-Pacific56316.2022.9941945
Hao Liu, Xuechen Bai, Jingyun Gu, Hongye Cai, Xiangjun Zhang, Dianguo Xu
{"title":"Analysis of High Step-up Switched Capacitor DC-DC Converter Based on Coupled Inductors","authors":"Hao Liu, Xuechen Bai, Jingyun Gu, Hongye Cai, Xiangjun Zhang, Dianguo Xu","doi":"10.1109/ITECAsia-Pacific56316.2022.9941945","DOIUrl":"https://doi.org/10.1109/ITECAsia-Pacific56316.2022.9941945","url":null,"abstract":"A novel high step-up switched capacitor DC-DC converter based on coupled inductors is proposed in this paper. The proposed topology solves the problem of insufficient voltage on the switched capacitor, thus improves the traditional energy storage structure. Combined with the coupled inductor, which further improve the voltage gain characteristics and reduce the stress of the switching device. The operating principle and steady state analysis of the converter are introduced in details, and a 200W experimental prototype with an input voltage of25-45V and an output voltage of 380V is established in the laboratory to verify the feasibility of the converter.","PeriodicalId":45126,"journal":{"name":"Asia-Pacific Journal-Japan Focus","volume":"124 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":"76699293","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}
引用次数: 0
Frequency Response and Fault Ride Through of a Novel MMC Based Hybrid Energy Storage System 一种新型MMC混合储能系统的频率响应与故障穿越
Asia-Pacific Journal-Japan Focus Pub Date : 2022-10-28 DOI: 10.1109/ITECAsia-Pacific56316.2022.9941862
A. Minfu, Yixuan Fang, Zai-xin Yang, Baiqing Yin, Pengfei Hu
{"title":"Frequency Response and Fault Ride Through of a Novel MMC Based Hybrid Energy Storage System","authors":"A. Minfu, Yixuan Fang, Zai-xin Yang, Baiqing Yin, Pengfei Hu","doi":"10.1109/ITECAsia-Pacific56316.2022.9941862","DOIUrl":"https://doi.org/10.1109/ITECAsia-Pacific56316.2022.9941862","url":null,"abstract":"Energy storage is seen as a solution to the problem of inertia and fault ride through in high penetration power system. Comparing to single energy storage system, hybrid energy storage system has some advantages and has drown much attention. A novel hybrid energy storage topology based on multilevel modular converter(MMC) has been proposed. The MMC-based topology has better reliability, and simplified control. This paper focus on the operation of the MMC-based hybrid energy storage system under dynamic and grid fault conditions. The frequency response and power allocation method for the MMC-based hybrid energy storage under dynamic conditions is presented, and unbalance current compensation and low voltage ride through strategy is proposed. A low voltage ride through recover method is proposed to fasten the recover process. All the control method is verified by PLECS-based simulation. With proposed control in this paper, the MMC-based hybrid energy storage can deal with several dynamic and grid fault conditions.","PeriodicalId":45126,"journal":{"name":"Asia-Pacific Journal-Japan Focus","volume":"37 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":"87347742","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}
引用次数: 0
Active RC Auxiliary Circuit With Parameter Switching Scheme for Stabilization and Transient Mitigation of Cascaded DC/DC Systems 带参数开关的有源RC辅助电路用于级联DC/DC系统的稳定和暂态缓解
Asia-Pacific Journal-Japan Focus Pub Date : 2022-10-28 DOI: 10.1109/ITECAsia-Pacific56316.2022.9941881
Yufei Si, Z. Shan
{"title":"Active RC Auxiliary Circuit With Parameter Switching Scheme for Stabilization and Transient Mitigation of Cascaded DC/DC Systems","authors":"Yufei Si, Z. Shan","doi":"10.1109/ITECAsia-Pacific56316.2022.9941881","DOIUrl":"https://doi.org/10.1109/ITECAsia-Pacific56316.2022.9941881","url":null,"abstract":"DC distribution power systems have been widely used in more electric aircraft, electric vehicles, etc. Therein, power converters in the energy source and loads are connected to the DC bus, and hence form a cascaded system. In this context, voltage oscillations due to the control interaction should be avoided in the system. In addition, the system requires a regulated bus voltage with small transient deviations. However, most existing stabilization methods including active capacitor converters cannot ensure the transient performance of the cascaded system. This paper proposes an active auxiliary circuit that can emulate passive RC circuits and switch the RC parameters in load transients and steady states, which can stabilize the cascaded system and mitigate fast load transients. The parameter design of the proposed auxiliary circuit and the stability analysis of the cascaded system with the auxiliary circuit are introduced. Simulation results are given to verify the feasibility of the proposed method.","PeriodicalId":45126,"journal":{"name":"Asia-Pacific Journal-Japan Focus","volume":"78 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":"86085110","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}
引用次数: 0
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