基于优化前馈控制的VIENNA整流器动态性能研究
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摘要
在传统平均电流控制电压环路基础上,提出了一种基于前馈控制的平均电流控制方案,电压环加入负载前馈控制和电网电压前馈控制,减小直流侧电压超调量;电流环采用误差迭代PI算法,实现无静差调节,优化三相VIENNA整流器的动态响应。所提出的负载前馈变量仅在负载阶跃时更新,在稳态时保持恒定。另外,本文对频域响应特性进行分析并通过仿真加以验证。
Based on the traditional average current control voltage loop, this paper proposed an optimized feedforward control scheme. The voltage control loop introduced the load feedforward control and the grid voltage feedforward control to reduce the voltage overshoot in DC side. The current control loop designed as a proportional controller using error iteration algorithm, which realize floating control and optimize the dynamic response of three-phase VIENNA rectifier. The proposed load feedforward terms updated when the load step and remains constant at steady state. In addition, this paper analyzed the frequency response characteristics and validates them by simulation.
Based on the traditional average current control voltage loop, this paper proposed an optimized feedforward control scheme. The voltage control loop introduced the load feedforward control and the grid voltage feedforward control to reduce the voltage overshoot in DC side. The current control loop designed as a proportional controller using error iteration algorithm, which realize floating control and optimize the dynamic response of three-phase VIENNA rectifier. The proposed load feedforward terms updated when the load step and remains constant at steady state. In addition, this paper analyzed the frequency response characteristics and validates them by simulation.
引文
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[5]倪靖猛,方宇,邢岩,等.基于优化负载电流前馈控制的400 Hz三相PWM航空整流器[J].电工技术学报,2011,26(2):141-146.
[6]赵仁德,贺益康,刘其辉.提高PWM整流器抗负载扰动性能研究[J].电工技术学报,2004,19(8):67-72.
[7]陈亚爱,薛颖,周京华.基于平均电流控制的双闭环改进控制策略[J].电机与控制应用,2013,40(10):26-29.
[8]徐群伟,钟晓剑,胡健,等.基于误差迭代PI和改进重复控制的APF补偿电流控制[J].电力系统自动化,2015(3):124-131.
[9]唐欣,罗安,涂春鸣.基于递推积分PI的混合型有源电力滤波器电流控制[J].中国电机工程学报,2003,23(10):38-41.
[2]CHRIN P,BUNLAKSANANUSORN C.Novel Current feedforward average current mode control technique to improve output dynamic performance of DC-DC converters[C]//International Conference on Power Electronics and Drive Systems.IEEE,2008:1416-1421.
[3]ESCOBAR G,STANKOVI A M,CARRASCO J M,et al.Analysis and design of direct power control for a three phase synchronous rectifier via output subspaces[J].Power Electronics IEEE Transactions on,2003,18(3):823-830.
[4]Chen Xudong,Ren Xiaoyong,Zhang Zhiliang,et al.Dynamic response optimization for three-phase vienna rectifier with load feedforward control[C]//2016 IEEE Energy Conversion Congress and Exposition(ECCE).IEEE,2016:1-7.
[5]倪靖猛,方宇,邢岩,等.基于优化负载电流前馈控制的400 Hz三相PWM航空整流器[J].电工技术学报,2011,26(2):141-146.
[6]赵仁德,贺益康,刘其辉.提高PWM整流器抗负载扰动性能研究[J].电工技术学报,2004,19(8):67-72.
[7]陈亚爱,薛颖,周京华.基于平均电流控制的双闭环改进控制策略[J].电机与控制应用,2013,40(10):26-29.
[8]徐群伟,钟晓剑,胡健,等.基于误差迭代PI和改进重复控制的APF补偿电流控制[J].电力系统自动化,2015(3):124-131.
[9]唐欣,罗安,涂春鸣.基于递推积分PI的混合型有源电力滤波器电流控制[J].中国电机工程学报,2003,23(10):38-41.