并联型有源电力滤波器的SVPWM控制技术研究

针对有源滤波器常规滞环、三角载波控制时,开关频率波动大,响应慢的缺点,引入了空间电压矢量算法。在K步时,假定K+1步,APF的补偿电流完全跟踪上了谐波指令电流,再根据APF离散的数学模型及空间电压矢量调制模块,确定第K+1步的开关管驱动信号,以达到快速补偿谐波电流的目的。仿真实验表明,基于SVPWM控制的有源滤波器具有开关频率固定,动态响应快,补偿精度高的优点。

The Research on Active Power Filter with SVPWM Control

The hysteresis and the triangular carrier control methods are widely used in active power filter's control.As to the hysteresis,the switch frequency is variable;And to the triangular carrier control,the respond is slow.For these reason,the svpwm method is introduced.In this algorithm,it is supposed that,the APF compensation current completely follows the instruction current in the K+1 step.Then,according to the discrete mathematical model of APF and space voltage vector modulation module,the K+1 step's swit...