| Abstract |
The performance of the step-up pwm boost rectifier is obtained when the rectifier is controlled using a hysteresis current controller. Operating regions are identified, determined by the magnitude of the inductance and by the magnitude of the output dc voltage, where the ac-line current has a low current distortion and near unity power factor. Control restrictions are defined, for the output dc voltage and the input current, to restrict the distortion experienced in the ac-line current. An asymmetrical half-bridge boost rectifier circuit is described that improves the quality of the ac-line current. Extensive analyses of the circuits used are undertaken with reference to theoretical predictions, computer simulations and experimental results. |
