An Energy Saving Control for Current Source Inverter Induction Motor Drive System

This paper proposes an energy saving control mode for current source inverter(CSI) induction motor drive system with the motor driving a constant power load.The emphasis are on control scheme,software and hardware design methods forfunction generator suing single chip microcomputer.The experiment results aregiven.When motor carries 30% rated load,the system efficiency may raise about9%.As this control made only optimizes the relationship between voltage andfrequency in an established system,no other circuit is needed in order to maintainthe original static and dynamic performance.