三相应急电源和并联型有源滤波器复合系统

Combined Three-phase Emergency Power Supply System with Parallel Active Power Filter

提出了一种集三相应急电源(EPS)和并联型有源滤波器(APF)一体的复合系统。该系统应用双向PWM变换器,采用DSP数字控制技术,可以实现两方面的功能,即对负载的应急供电和对来自非线性负载的谐波和无功电流补偿。文中分别阐述了电路结构和控制策略两方面,计算机仿真初步证实了该系统的可行性。

This paper proposes a combined three-phase emergency power supply system with a parallel active power filter. Based on a bilateral PWM converter using DSP digital control scheme, it can carry out two functions： supplying the load with emergency power and compensating current harmonics and reactive power generated from the nonlinear load when it operates off-line. In this paper, the circuit configuration and control scheme are discussed, and primely verified by the computer simulation.