以電阻偵測輸入電流之感應馬達向量控制

PWM-VS INVERTER IMPLEMENTATION VIA RESISTOR-BASED CURRENT SENSING TECHNIQUES

本論文主要的目的，在研究使用向量控制理論以及V/F控制理論來驅動感應馬達時，如何在IGBT功率模組的下三臂上加入偵測電阻來取得電流的迴授 信號，以取代傳統使用霍耳CT元件因價錢居高不下所導致成本過高的問題。

The main objective of this paper is to implement a resistor-based current sensing circuit by using an integrated IGBT power module. The effectiveness of the hardware circuit combined with a simple software algorithm can help reduce the cost of low power (up to 3HP) pulse-width modulation voltage-source (PWM-VS) vector-controlled or V/F controlled inverter drives whose motor currents are sensed via hall-effect sensors.