|
|
Redundant and Fault Tolerant Control of a Medium-Voltage High-Power Three-Phase Three-Level DC-DC Converter |
Yang Guorun, Xiao Fei, Fan Xuexin, Wang Ruitian, Liu Jilong |
National Key Laboratory of Science and Technology on Vessel Integrated Power System Naval University of Engineering Wuhan 430033 China |
|
|
Abstract The three-phase three-level DC-DC converter is very suitable for high input voltage and high output current power conversion applications. Its characteristics of multi-module interleaved- parallel combination can significantly improve the reliability of the operation. To highlight the advantage, we should execute the redundancy and fault tolerance. This paper firstly analyzed the impact of the interleaved angle on the redundancy and fault tolerance, the best value of the interleaved angle was calculated. Then a novel method to achieve redundancy and fault tolerance was proposed based on the voltage-current double-closed-loop proportional-integral (PI) control plus regulating the interleaved angle. This method was implemented in a distributed control system based on ring net communication, which guaranteed the equality and current balance among all modules, and realized the redundant and fault tolerant operation of the converter. The proposed method is validated by experimental results of a MW-level prototype.
|
Received: 12 August 2016
Published: 14 September 2017
|
|
|
|
|
[1] Sha Deshang, Guo Zhiqiang, Liao Xiaozhong. Con- trol strategy for input-parallel-output-parallel con- nected high-frequency isolated inverter modules[J]. IEEE Transactions on Power Electronics, 2011, 26(8): 2237-2248. [2] 陈武, 阮新波, 颜红. DC/DC多模块串并联组合系统控制策略[J]. 电工技术学报, 2009, 24(7): 93-102. Chen Wu, Ruan Xinbo, Yan Hong. Control strategy for DC/DC multiple modules series-parallel com- bined systems[J]. Transactions of China Electrote- chnical Society, 2009, 24(7): 93-102. [3] 方天治, 沈乐, 何玮, 等. 多逆变器模块输入串联输出并联组合系统的分布式控制及其冗余技术研究[J]. 中国电机工程学报, 2016, 36(8): 2223-2232. Fang Tianzhi, Shen Le, He Wei, et al. A novel strategy to achieve distributed control and redun- dancy for multi-module input-series-output-parallel connected inverter systems[J]. Proceedings of the CSEE, 2016, 36(8): 2223-2232. [4] 方天治, 朱恒伟, 阮新波. 模块化输入串联输出串联逆变器系统的控制策略[J]. 电工技术学报, 2015, 30(20): 85-92. Fang Tianzhi, Zhu Hengwei, Ruan Xinbo. Control strategy for modular input-series-output-series inver- ters system[J]. Transactions of China Electrotech- nical Society, 2015, 30(20): 85-92. [5] 陈坚. 电力电子学—电力电子变换和控制技术[M].北京: 高等教育出版社, 2010. [6] 刘志军, 虞晓阳, 金科. 一种新颖的磁集成自驱动倍流整流半桥三电平直流变换器[J]. 电工技术学报, 2015, 30(3): 131-139. Liu Zhijun, Yu Xiaoyang, Jin Ke. A novel self-driven current-doubler-rectifier three-level converter with an integrated magnetic structure[J]. Transactions of China Electrotechnical Society, 2015, 30(3): 131-139. [7] 周玮阳, 虞晓阳, 金科, 等. 半桥三电平直流变换器的电容电压控制策略[J]. 电工技术学报, 2015, 30(16): 56-62. Zhou Weiyang, Yu Xiaoyang, Jin Ke, et al. Capacitor voltage control strategy for half-bridge three-level converter[J]. Transactions of China Electrotechnical Society, 2015, 30(16): 56-62. [8] Yong-Seong Roh, Young-Jin Moon, Jeongpyo Park, et al. A multiphase synchronous Buck converter with a fully integrated current balancing scheme[J]. IEEE Transactions on Power Electronics, 2015, 30(9): 5159-5169. [9] Huang Wangxin, Jaber A, Abu Qahouq. Input voltage ripple based sensorless current sharing auto-tuning controller for multiphase DC-DC converters[C]// Proceedings of the Applied Power Electronics Conference and Exposition, Charlotte, NC, 2015: 622-627. [10] Ahn Y, Jeon I, Roh J. A multiphase Buck converter with a rotating phase-shedding scheme for efficient light-load control[J]. IEEE Journal of Solid-State Circuits, 2014, 49(11): 2673-2683. [11] Ta S J, Wen L C. A novel phase-shedding control scheme for improved light load efficiency of multiphase interleaved DC-DC converters[J]. IEEE Transactions on Power Electronics, 2013, 28(10): 4742-4752. [12] Gleissner M, Bakran M M. Design and control of fault-tolerant nonisolated multiphase multilevel DC-DC converters for automotive power systems[J]. IEEE Transactions on Industry Applications, 2016, 52(2): 1785-1795. [13] 谢桢, 魏建勋, 付立军, 等. 三电平H桥直流换流器电流连续模式下的建模与控制器设计[J]. 电网技术, 2013, 37(5): 1230-1236. Xie Zhen, Wei Jianxun, Fu Lijun, et al. Modeling and controller design of three-level H-bridge DC/DC converter under continuous conduction mode[J]. Power System Technology, 2013, 37(5): 1230-1236. [14] 谢桢, 付立军, 肖飞, 等. 三电平直流变换器全模式小信号建模和控制器设计[J]. 西安交通大学学报, 2013, 47(6): 109-116. Xie Zhen, Fu Lijun, Xiao Fei, et al. All mode small signal model and controller of three-level DC/DC converter[J]. Journal of Xi'an Jiaotong University, 2013, 47(6): 109-116. [15] 杨国润, 肖飞, 范学鑫, 等. 基于DSP和FPGA的载波移相脉冲生成方法[J]. 海军工程大学学报, 2015, 27(1): 1-5. Yang Guorun, Xiao Fei, Fan Xuexin, et al. A carrier phase-shift pulse generating method based on DSP and FPGA[J]. Journal of Naval University of Engineering, 2015, 27(1): 1-5. |
|
|
|