ZVS/ZCS Bidirectional DC-DC Converter for DC Uninterruptable Power Supply
نویسنده
چکیده
An Isolated ZVS/ZCS bidirectional DC-DC converter for DC Uninterruptable Power supplies is presented in this paper. The usual way to avoid a computer shutdown during the mains failure is to connect an ac uninterruptible power supply (UPS). Alternatively, in this paper, a simple and high efficiency dc UPS is presented by an isolated bidirectional soft-switching dc-dc converter. The bidirectional dc-dc converter operates under zero-current switching (ZCS) /Zero voltage switching conditions by utilizing the leakage inductor of the transformer. ZVS/ZCS operation is achieved in batterybackup and charging modes, which significantly reduces the power losses in the bidirectional converter. The principle of operation is analyzed and simulated by using MATLAB simulink.
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