Inherent Dead-Time Distortion Compensation Feature Of Conventional One-Cycle Control In Single Phase PWM VSI

Dead-time distortion is a major problem in PWM inverter. Several techniques have been developed to compensate this effect. This paper presents the inherent dead-time distortion compensation feature of conventional one-cycle control technique, when applied to single phase PWM VSI. This technique involves a current sensor-less approach and also does not require any topological change or modification in conventional one-cycle control strategy. Hence, it is easily implementable using discrete hardware or low-cost programmable devices. Hence, such a strategy can be a suitable alternative to conventional Sine-PWM technique, where low output THD is required. The proposed concept is validated via digital simulation and experimentation in laboratory.