Sensorless measurement of the DC link capacitor current of three-phase inverter

3상 인버터의 DC 링크 커패시터 전류의 센서리스 측정

  • Published : 2012.11.23

Abstract

A general method to measure the inverter DC bus capacitor current is described. It is an indirect estimated method. By measuring the input and out voltage and current can calculate DC bus capacitor current. This paper will develope the theory that describes the indirect method. It will discuss and verify the feasibility of this approach through the use of the PSIM. Using SPWM control method will be simulated and compared.

Keywords