异质功率器件组合型多电平电路的拓扑演化方法与混频调制技术研究
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1.A SiC&Si Hybrid Four-Level ANPC Converter with Multi-Step Soft-Switching Modulation Achieving Capacitor Voltage Balancing
- Dong, Jiazhan ; Zhang, Yifan ; Lu, Dengjie ; Li, Chushan ; Zhang, Shilei ; Li, Wuhua ; He, Xiangning
- 《Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC》
- 2022年
- 会议
2.Cascaded Resonant Switched Capacitor Auxiliary Power Supply for Medium Voltage DC
- Ren, Shengdao ; Li, Chushan ; Chen, Jing ; Yan, Huiqiang ; Li, Wuhua ; He, Xiangning ; Qu, Wanyuan
- 《Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC》
- 2022年
- 会议
3.Comprehensive Comparison between Two-Level, Three-Level, and Hybrid Three-Level SiC Inverter for High Power High Speed Drive System
- 关键词：
- Topology;Efficiency;Power electronics;Electric inverters;Comprehensive comparisons;Control capabilities;High speed drives;Hybrid converters;Silicon carbides (SiC);Switching performance;Three-level converters;Three-level inverters
- Wang, Qinsong;Zhang, Yifan;Li, Chushan;Li, Wuhua;He, Xiangning
- 《9th IEEE International Power Electronics and Motion Control Conference, IPEMC 2020 ECCE Asia》
- 2020年
- November 29, 2020 - December 2, 2020
- Nanjing, China
- 会议
High speed drive system desires power converters with higher switching frequency to minimize the torque ripple and obtain a faster control capability. Silicon carbide (SiC) devices based converters have gained increasing attention in such applications due to their extraordinary switching performance. Possible solutions including two-level converters, three-level converters and hybrid converters comprising both Si and SiC device. In this paper, a comprehensive comparison of possible high density solutions is given. Simple calculations show that an outstanding efficiency can be achieved with the SiC based threelevel topologies in the medium switching frequency range. However, the cost of SiC based three-level topologies are still unacceptable. As an alternative, the hybrid three-level inverter can dramatically reduce costs with a little sacrifice on efficiency, which is a more promising choice at this stage. © 2020 IEEE.
...4.Resonant Control with Differentiated Phase Correction for High Power Converters with Negative Sequence Elimination Featuring Double-sided Frequency Asymmetry
- 关键词：
- Resonance;Controllers;Feedback;Power converters;
- Yan, Ye;Wang, Yuxiang;Li, Chushan;Li, Wuhua;He, Xiangning
- 《21st IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2020》
- 2020年
- November 9, 2020 - November 12, 2020
- Aalborg, Denmark
- 会议
Significant control and modulation delay presents in the current regulation of high-power voltage source converters. The proportional-resonant controller (PR) with equalized phase correction (EPC), commonly used in the active power filter, can be referred here to suppress the negative sequence current better than the PI controller, and increase the phase margin with EPC. After introducingthe current feedback (CF), proved to increase the tracking performance similarly to that in the dq-axis, the double-sided frequency domain becomes asymmetric, making EPC less effective. In this paper, the PR controller with differentiated phase correction (DPC) is proposed, with two independent phase correction angles and gains at the positive and negative poles. Analyzed with double-sided bode diagram, the stability margins are improved with the two extra freedom degrees. Moreover, the function related to the conjugate symmetry about the fundamental frequency is used to quantitively describe the response of such asymmetric system. Finally, simulation and experiment are implemented toverify the improved dynamic performance of the proposed one versus the compared schemes. © 2020 IEEE.
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