The Implementation Of Power Interruption Generator Based On VSI

The Interruption Generator based on the voltage source inverter (VSI) is mostly used to detect and evaluate the power quality problems of the electric equipment. In this paper, various circuits are proposed, and the characters of which are made clear, as the conclusion, the Interruption Generator based on the voltage source inverter (VSI) is selected. By emulation, some technique problems have been figured out: the modulation arithmetic, the control mode and the design of low-pass filter. The author illuminates the generating process and technique of some power quality problems, such as voltage sag, unbalance, voltage fluctuation, flicker, harmonic as well as frequency deviation. Based on all of these, the parameter and character of the prototype is proposed. A simple and flexible interface is offered, completing the communication between the PC and the controller. The experiment of researching character of the transducer during voltage sag is carried through, which shows the application value.