非理想电源下并联有源滤波器的空间矢量控制  

Space Vector Control of the SAPF Under the Condition of Non-ideal Source

作　　者：马草原[1] 王崇林[1] 李钢[1] 

机构地区：[1]中国矿业大学信电学院电气工程系,徐州221008

出　　处：《电力系统及其自动化学报》2010年第6期138-142,共5页Proceedings of the CSU-EPSA

摘　　要：由于非理想电源三相电压畸变且不对称,含有大量负序分量,使传统谐波电流检测法ip-iq法产生误差,因此需要提取出a相电压的正序分量。改进的瞬时对称分量法利用三相电压的瞬时值构造一个无延迟的旋转相量,以复数的形式直接计算a相电压的正序值,与ip-iq法结合能准确得到指令电流,再结合经典的空间矢量控制实现了补偿电流的跟踪。MATLAB仿真结果表明,改进的瞬时对称分量法准确检测出了a相电压正序分量,SVPWM控制效果良好。As a result of three-phase voltage distortion and asymmetric of non-ideal power,containing a large number of negative sequence components,traditional ip-iq method which detect harmonic currents will have error,so the positive sequence voltage component of a phase should be extracted.The rotary phases is oblained without delay by using instantaneous value of three-phase voltage.By calculating the positive sequence of a phase voltage in the plural form,without the phase-shift operator so the delay is not introduced,the instruction of the current is received accurately.The space vector control is used for current tracking.MATLAB simulation results show that the instantaneous symmetrical components detect the positive sequence voltage component accurately,the result of the space vector control is good.

关 键 词：非理想电源电压 瞬时对称分量法 移相算子 并联型有源电力滤波器 空间矢量控制 

分 类 号：TN731.8[电子电信—电路与系统]