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三电平整流器的PFC及中点平衡控制方法

, PP. 81-86

Keywords: 单位功率因数,锁相环,中性点电压平衡,三电平整流器

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Abstract:

针对PFC输入电流的THD受电网不平衡、谐波、偏移等畸变情况影响较大的问题,提出了基于能量平衡的同步控制方法,同时引入负载电流的前馈控制,以抑制电网波动和负载扰动,提高系统的动态性能。分析了三相三电平整流器的数学模型,设计了一个中点电压控制数字补偿器,以抑制上下电容电压不平衡引起的中点电压波动,同时利用粒子群优化算法对中点电压平衡控制器的限幅值进行了优化设计,降低了中点电压调节对输入电流THD的影响。在所搭建的2.4kW的实验样机上,验证了控制方法的有效性,满载条件下输入电流THD<5%,中性点电压偏差小于5V。

References

[1]  Lin B R, Yang T Y. Three-phase high power factor AC/DC converter[J]. IEE Proceeding Electric Power Applications, 2005, 152(3): 485-492.
[2]  Mchl E L M, Barbi I. An improved high-power factor and low-cost three phase rectifier[J]. IEEE Transactions on Industry Applications, 1997, 33(2): 485-492.
[3]  Guan Chyun Hsieh, Hung J C. Phase-locked loop techniques a survey[J]. IEEE Transactions on Industrial Electronics, 1996, 6(43): 609-615.
[4]  Newton C, Sumner M. Novel technique for maintaining balanced internal DC link voltages in diode clamped five level inverters[J]. IEE Proceedings Electric Power Applications, 1999, 146(3): 341-349.
[5]  Maswood A I, Liu Fangrui. A unity-power-factor converter using the synchronous-reference-frame- based hysteresis current control[J]. IEEE Transactions on Industrial Applications, 2007, 43(2): 593-599.
[6]  S Beret. Recent developments of high power converters for industry and traction applications[J]. IEEE Transactions on Power Electronics, 2000, 15(6): 1102-1117.
[7]  Koar J W, Zach F C. A novel three-phase utility interface minimizing line current harmonics of high-power telecommunications rectifier modules[J]. IEEE Transactions on Industrial Electronics, 1997, 44(4): 456-467.
[8]  Kanaan H, AI-Haddad K. Small-signal averaged model and simple control of a high-power-factor three phase /switch/level fixed-frequency PWM rectifier for high-power telecommunications[C]. INTELEC '03. the 25th International, 2003: 302-309.
[9]  Chung S K. Phase-locked loop for grid-connected three-phase power conversion systems[J]. IEE Proceedings Electric Power Application, 2000, 147 (3): 213-219.
[10]  Chung S K. A phase tracking system for three phase utility interface inverters[J]. IEEE Transactions on Power Electronics, 2000, 15(3): 431-438.
[11]  Newton C, Sumner M. Neutral point control for multi level inverters: theory, design and operational limitations[C]. IEEE Industry Applications Society Annual Meeting, 1997: 1336-1343.
[12]  Celanovic N, Boroyevich D. A comprehensive study of neutral point voltage balancing problem in three level neutral point clamped voltage source PWM inverters[J]. IEEE Transactions on Power Electronics, 2000, 15(2): 242-249.

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