Abstract
A voltage source inverter without DC link components is an AC-to-AC converter having dual bridges such as a PWM rectifier and a PWM inverter without DC link components, therefore, a PWM rectifier and a PWM inverter can be controlled independently. Conventional matrix converters have disadvantages such as a complicated commutation scheme and necessity of a large sized clamp circuit, but commutation and protection of this 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 an induction motor are described when a 0.75 kW induction motor driven by this inverter.
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