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Input current and power factor improvements of single and three-phase rectifiers by switch mode regulators are usually achieved by switching the output of rectifier's diode bridge. In this paper a three phase buck rectifier is proposed which is switched at the input side by one three phase bi-directional switch. The input switching makes input current switched at high frequency, which is then filtered...
Two new topologies of single-phase AC-DC converter using Buck and Buck-Boost conversion with low input current THD and high input power factor are proposed. Instead of using a single phase rectifier followed by a boost DC-DC converter, or using a bridge rectifier with two diodes and two switches, the rectifier's input is chopped at high frequency during positive and negative cycles by a single bi-directional...
In this paper, a Ćuk topology based single phase rectifier is proposed. Instead of using a single phase rectifier followed by a boost DC-DC converter, or using a bridge rectifier with two diodes and two switches, the rectifier's input is chopped at high frequency during positive and negative cycles by a bi-directional switch in Ćuk conversion mode to get step-up/step-down rectification. The proposed...
Two new schemes of 3 phase AC voltage controller are proposed. The proposed AC voltage controllers are based on Buck switch mode topologies. The proposed AC-AC converters have the advantage of input current shaping that provides low input current total harmonic distortion (THD) and high input power factor compared to the conventional AC voltage controllers. Moreover, only a single control switch is...
Input current and power factor improvements of single and three phase rectifiers by switch mode regulators are usually achieved by switching the output of rectifiers. The output switching makes input current high frequency switched, which is then filtered by a small filter to get low THD input current at near unity power factor. In this paper, a three phase cuk rectifier is proposed which is regulated...
Input current and power factor improvements of single and three-phase rectifiers by switch mode regulators are usually achieved by switching the output of rectifier's diode bridge. In this paper a three phase boost rectifier is proposed which is switched at the input side by one three phase bidirectional switch. The input switching makes input current switched at high frequency, which is then filtered...
Three schemes of 3 phase AC voltage controller are proposed. The proposed AC voltage controllers are based on Boost and Buck switch mode topologies. The proposed AC-AC converters have the advantage of input current shaping that provides low input current total harmonic distortion (THD) and high input power factor compared to the conventional AC voltage controllers. Moreover, only a single control...
To topologies of single-phase Ćuk AC-DC converters with low input current THD and high input power factor are proposed. Instead of using a single phase rectifier followed by a boost DC-DC converter, or using a bridge rectifier with two diodes and two switches, the rectifier's input is chopped at high frequency during positive and negative cycles by a bi-directional switch in Ćuk conversion mode to...
Two topologies of single-phase Buck and Boost AC-DC converters are presented. Instead of using a single phase rectifier followed by a boost dc-dc converter, or using a bridge rectifier with two diodes and two switches, the rectifier's input is chopped at high frequency during positive and negative cycles by a bi-directional switch in each of the Boost and Buck conversion mode to get step-up or step-down...
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