采用pq瞬时功率理论的三相电压源变换器的研究

瞬时有功和无功功率理论,即Pq瞬时功率理论,得到了广泛的研究和实际应用。本文基于pq瞬时功率理论,分析了三相有源电力滤波器三种主要控制策略的工作原理,包括瞬时功率恒定策略、电流波形正弦策略、广义Fryze电流控制策略,另外简要分析了三相有源电力滤波器的另一种同步功率传输控制策略,并在三相供电电压平衡和对称的条件下,将pq瞬时功率理论应用到三相电压源PWM整流器中,采用MATLAB/SIMULINK进行较为深入的仿真分析,获得了非常满意的结果。结果表明,相比平均功率理论,采用pq瞬时功率理论,三相电压源变换器具有响应快、控制简单等优点。

Investigation on Three-phase Voltage Source Converters Using pq Instantaneous Power Theory

Instantaneous active power passive power theory, namely pq instantaneous active power theory, is researched and applied widely. In this paper, on the basis of the power theory, three control strategies of three-phase active filter is sorted and analyzed, including constant instantaneous power strategies, sinusoidal current control strategy, generalized Fryze current control strategy. Besides, synchronous power transmission control strategy is also analyzed. Under the conditions of balanced and symmetrical power supply, the pq instantaneous active power theory is introduced to three phase voltage source PWM rectifier and simulated thoroughly by means of MATLAB/SIMULINK. Compared to average power theory, when using pq instantaneous power theory, the satisfactory results are obtained, showing that three phase voltage source converter feature fast response and simple control.