摘要
空间电压矢量脉宽调制技术(SVPWM)与传统的控制方式相比具有谐波畸变小,易于数字化控制的优点。为了验证SVPWM在并联型电能质量控制器(SPQC)的控制效果,在详细论述了SVPWM的原理的基础上,通过简单快速算法将SVPWM控制技术引入到SPQC中,在MATLAB环境下对基于该控制算法的SPQC进行了建模仿真。理论分析及仿真结果均表明通过SVPWM控制可以实现补偿电流对指令电流的跟踪,有效降低谐波畸变率,证明了SVPWM控制技术应用于SPQC的正确性和可行性。
SPQC is a new kind of power electronic device, which can restrain harmonic dynamically, In order to verify the method applying in SPQC. the principle of SVPWM strategy is presented in detail and a novel SVPWM algorithm is proposed. Then a simplified method to calculate the operating time of each vector is offered and the way of judging sector is used,which avoids the nonlinear calculating . Moreover, the simulation models of SPQC are built up based on the strategy by power systems block of MATLAB/SIMULINK and the waveforms are given. The theoretical analysis and simulation results show that SVPWM control can decrease the total harmonic distortion. It indicates the validity and feasibility of the strategy applying in SPQC.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2008年第2期298-302,共5页
High Voltage Engineering
基金
内蒙古自然科学基金项目(200607010809)
内蒙古兰太集团基金资助项目(GDLT2005001)~~
关键词
并联型电能质量控制器
谐波
SVPWM
控制
补偿
仿真
shunt power quality controller
harmonics
space vector PWM
control
compensation
simulation
