Title :
Study of dead time of PWM rectifier of Voltage-source inverter without DC-link components and its operating characteristics of induction motor
Author :
Iimori, Kenichi ; Shinohara, Katsuji ; Yamamoto, Kichiro
Author_Institution :
Dept. of Electr. & Electron. Eng., Kagoshima Univ., Japan
Abstract :
A voltage-source inverter without dc-link components is an ac-to-ac converter having dual bridges of a pulsewidth-modulated (PWM) rectifier and a PWM inverter that can be controlled independently. While conventional matrix converters have disadvantages, such as a complicated commutation scheme and necessity of a large-sized clamp circuit, commutation, and protection of our inverter can be implemented easily. In order to control the PWM rectifier and the PWM inverter independently, snubber circuits for the PWM rectifier are required to assure the path of load current during dead time. In this paper, analytical method of a snubber circuit and operating characteristics of a snubber circuit are described when a 0.75-kW induction motor is driven by our inverter.
Keywords :
AC-DC power convertors; PWM invertors; PWM rectifiers; commutation; induction motor drives; machine protection; matrix convertors; snubbers; 0.75 kW; AC-to-AC converter; DC-link components; PWM rectifier dead time; clamp circuit; commutation scheme; induction motor drives; inverter protection; matrix converter; pulse width modulation; snubber circuits; voltage source inverter; Bridge circuits; Commutation; Induction motors; Matrix converters; Pulse inverters; Pulse width modulation converters; Pulse width modulation inverters; Rectifiers; Snubbers; Voltage control; Snubber circuit; voltage-source inverter; without dc-link components;
Journal_Title :
Industry Applications, IEEE Transactions on
DOI :
10.1109/TIA.2006.870040
