Zbigniew Fedyczak, Leszek Frąckowiak and Maciej Jankowski
Aims to focus on steady state and transient state analysis of basic properties of new solution for a single‐phase serial AC voltage controller. Furthermore, simulation and…
Abstract
Purpose
Aims to focus on steady state and transient state analysis of basic properties of new solution for a single‐phase serial AC voltage controller. Furthermore, simulation and experimental test results of 3 kVA models are provided to confirm and verify the theoretical approach.
Design/methodology/approach
Presents a converter with auxiliary transformer and bipolar PWM AC matrix‐reactance chopper (MRC), based on Ćuk B2 topology. The MRC has the possibility of bipolar AC voltage conversion with magnitude of voltage transformation function greater than 1. The peak voltage detection method in the control circuit is applied to fast control of the load voltage changes. The steady state and transient state theoretical analysis based on averaged models of the presented controller is used. There is a four‐terminal description of the basic properties in the presented approach.
Findings
In the proposed solution only half the number of switches compared with the case of full bridge matrix chopper solution is used. The nominal load voltage can be obtained even for 50 per cent step‐down of the supply voltage.
Originality/value
Presents new topology and properties of single‐phase serial AC voltage controller.
Details
Keywords
Michal Gwóźdź, Ryszard Porada and Leszek Fraockowiak
Presents a system capable of achieving optimal compensation (in real time) by elimination of differential current and employing power electronic controlled current sources. The…
Abstract
Presents a system capable of achieving optimal compensation (in real time) by elimination of differential current and employing power electronic controlled current sources. The functional block diagram and a description of the working principle are included. Simulation tests were carried out on current source and active compensation system. The results of simulation and experimental tests of prototype model of controlled current source and compensator confirm a considerable reduction of source current distortion at strong distortions of voltage and current of receiver, a fast response to step changes of load and good stability of its work.