|
|
|
| Control for Inverters in Parallel Operation With Pre-synchronized Voltage References |
| He Zhongyi, Xing Yan, Qi Biaojie, Wang Xiaona |
| Nanjing University of Aeronautics and Astronautics Nanjing 210016 China |
|
|
|
|
Abstract A novel inverter parallel system based on pre-synchronized voltage reference signal and output power difference regulation is proposed to take advantage of both the conventional wireless droop method and the distribution control method. The pre-synchronization control for voltage reference signal is implemented by combining power line communication (PLC) and digital signal processor (DSP) hardware with the corresponding software algorithm. In parallel system, the phase angle of each voltage reference signal is exchanged by PLC and regulated to be identical among all the modules. The active power and reactive power of each module are calculated and exchanged by means of communication such as PLC and controller area network (CAN) in parallel system to generate the output power differences. The accumulative power regulation algorithm is proposed with theoretical analysis in detail, and the phase and amplitude of the voltage reference signals are regulated by the output power differences. Simulation and experimental results are obtained in the dual-module parallel system to verify the validity and feasibility of the proposed control.
|
|
Received: 11 December 2008
Published: 04 March 2014
|
|
|
|
|
|
[1] Mohammad N Marwali, Jung Jinwoo, Ali Keyhani. Stability analysis of load sharing control for distributed generation systems [J]. IEEE Trans. on Energy Conversion, 2007, 22 (3): 737-745.
[2] 王晓寰, 张纯江, 顾和荣, 等. 现场总线控制的单相逆变电压并联控制系统[J]. 电工技术学报, 2007, 22 (10): 109-112.
[3] Guerrero J M, Matas J, L G de Vicuña, et al. Decentralized control for parallel operation of distributed generation inverters using resistive output impedance[J]. IEEE Trans. on Industrial Electronics, 2007, 54 (2): 994-1004.
[4] Brabandere K De, Bolsens B, Keybus J Van Den, et al. A voltage and frequency droop control method for parallel inverters [J]. IEEE Trans. on Power Electronics, 2007, 22 (4): 1107-1115.
[5] 姚玮, 陈敏, 陈晶晶, 等. 一种用于无互连线逆变器并联的多环控制方法[J]. 电工技术学报, 2008, 23 (1): 84-89.
[6] Hagen M, Heminger M, Mohammed A. Power line communication for lighting applications using binary phase shift keying (BPSK) with a single DSP controller[C]. In Proc. IEEE APEC, Dallas, USA, 2006: 823-828.
[7] 王根平, 易灵芝. 电力线系统的数据帧同步技术[J]. 电工技术学报, 2005, 20 (10): 115-118.
[8] 段善旭, 陈坚, 冯峰, 等. 基于电力线通信的并联UPS逆变器的均流控制[J]. 电力系统自动化, 2003, 27 (24): 28-31, 62.
[9] 段善旭, 夏斌, 康勇, 等. 电力线通信在逆变器无互联线并联中的应用[J]. 电力电子技术, 2004, 38 (1): 84-86.
[10] 邢岩, 严仰光. 电流型调节逆变器的冗余并联控制方法[J]. 中国电机工程学报, 2004, 24 (11): 199-202. |
|
|
|
2010, Vol. 25 
