The Design of an Inverter Circuit Using Discrete IGBT to Replace IPM for Driving a Motor

Abstract

This paper presents the design of an inverter circuit using discrete IGBTs to replace Intelligent Power Modules (IPMs) for driving motors. The designed circuit has a power rating of up to 5000W for use with water pump induction motors. This application is specifically for 220V AC 50Hz systems within agricultural solar cell systems and village water supply solar cell systems. The decision to transition from IPM-based circuits to discrete IGBTs stems from the difficulties in procuring and repairing IPM products, as well as their high cost. The research team aims to resolve these issues by using discrete IGBTs, which will improve manufacturing and after-sales service management. IPMs typically integrate three key circuits are 1.Gate driver circuit 2.Short-circuit protection circuit and 3.Temperature sensor. The research team has successfully designed a new replacement circuit that functions effectively with existing products.