Evaluating the Efficacy of a Three-Phase AC-A C Boost Converter Configuration Using a Bidirectional Switch

In this research, a new three-phase switched mode Boost AC-AC converter that employs a single three-phase bidirectional switch is proposed. The three-phase bidirectional switch consists of a unidirectional switch enclosed by a three-phase diode bridge with three legs connected to different phases and a fourth leg consists of two diodes used to connect to the neutral. This confirms balanced three AC-AC converter operation in Boost mode. As a result, the output voltage remains balanced, regardless of load and input voltage fluctuations. Performance of the circuit in terms of power quality has been observed with the change of duty cycle. Voltage mode feedback control with PI controller has been used for output voltage regulation. Reduction of switches reduces bulkiness, cost and complexity of control circuit, causes less conduction and switching loss, and enhance system reliability.