Title :
An induction motor drive using an improved high frequency resonant DC link inverter
Author :
Lai, Jih-Sheng ; Bose, Bimal K.
Author_Institution :
Tennessee Center for Res. & Dev., Knoxville, TN, USA
Abstract :
An induction motor drive using an improved high-frequency resonant DC link inverter is presented. The resonant circuit was systematically analyzed first to establish the criteria for initial current selection, and a new circuit was then proposed to establish the bidirectional initial current. The proposed current initialization scheme solves voltage overshoot and zero-crossing failure problems in the ordinary resonant DC link inverters. A three-phase 3 kW IGBT (insulated-gate bipolar transistor) based 60 kHz resonant link inverter has been constructed and successfully tested with an induction motor drive. The speed control system is implemented using two microprocessors: TMS320C25 for computation and INTEL 80386 for monitoring and user interface. Experimental results showing the superior operation of the proposed resonant DC link inverter drive are presented.<>
Keywords :
computerised control; computerised monitoring; electric drives; induction motors; invertors; machine control; microcomputer applications; velocity control; 3 kW; 60 kHz; HF resonant DC link invertor; IGBT; INTEL 80386; TMS320C25; bidirectional initial current; computerised monitoring; induction motor drive; microprocessors; speed control system; user interface; voltage overshoot; zero-crossing failure; Circuit analysis; Circuit testing; Induction motor drives; Insulated gate bipolar transistors; Insulation; Inverters; RLC circuits; Resonance; Resonant frequency; Voltage;
Conference_Titel :
Power Electronics Specialists Conference, 1990. PESC '90 Record., 21st Annual IEEE
Conference_Location :
San Antonio, TX, USA
DOI :
10.1109/PESC.1990.131270
