引用本文: | 卢闻州,周克亮,程 明,等.PWM并网变换器多内模并联结构重复控制策略[J].电力系统保护与控制,2016,44(15):39-47.[点击复制] |
LU Wenzhou,ZHOU Keliang,CHENG Ming,et al.Parallel structure repetitive controller for PWM grid-connected converters[J].Power System Protection and Control,2016,44(15):39-47[点击复制] |
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摘要: |
以“净化”电力系统中电力电子接口为背景,以实现并网电流快速、精确跟踪参考为目的,分析了多内模并联结构重复控制器(PSRC)及其控制系统。PSRC采用并联组成的一组nk+i次谐波内模(i=0, 1,…, n-1)实现对所有谐波的零误差跟踪或扰动抑制。相对于常规重复控制器(CRC),PSRC具有时间延迟小、收敛速度快、跟踪精度不下降、数字实现所需内存单元不增加的优点。将PSRC应用于恒压恒频(CVCF)脉宽调制(PWM)并网变流系统,包括三相/单相整流和三相/单相逆变并网系统中。实验结果验证了PSRC的有效性和优越性。 |
关键词: 内模原理 重复控制 并联结构 脉宽调制(PWM) 并网变换器 |
DOI:10.7667/PSPC151905 |
投稿时间:2015-10-29修订日期:2016-01-26 |
基金项目:国家自然科学基金项目(51407084);中央高校基本科研业务费专项资金项目(JUSRP11461) |
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Parallel structure repetitive controller for PWM grid-connected converters |
LU Wenzhou,ZHOU Keliang,CHENG Ming,SHEN Jinfei |
(Key Laboratory of Advance Process Control for Light Industry, Ministry of Education, Jiangnan University, Wuxi 214122, China;School of Engineering, University of Glasgow, Glasgow G12 8QQ, Scotland, UK ;School of Electrical Engineering, Southeast University, Nanjing 210096, China) |
Abstract: |
On the basis of “cleaning” the power electronics interfaces in power system, and in order to achieve fast and accuracy grid currents tracking the references, parallel structure repetitive control (PSRC) and its control system are discussed. PSRC employs a parallel combination of categorized nk+i (i=0,1,2,…,n-1) order harmonic frequency internal models to achieve the zero-error tracking or disturbance elimination for all harmonics. Compared with conventional RC (CRC), PSRC has less time delay, faster error convergence rate, same tracking accuracy and same digital data memory cells. PSRC is applied into constant-voltage constant-frequency (CVCF) pulse-width-modulation (PWM) converter system, including three/single-phase rectifier/grid-connected inverter systems. Experimental results validate the effectiveness and advantages of PSRC. This work is supported by National Natural Science Foundation of China (No. 51407084) and Fundamental Research Funds for the Central Universities (No. JUSRP11461). |
Key words: internal model principle (IMP) repetitive control (RC) parallel structure pulse-width-modulation (PWM) grid-connected converter |