A novel voltage source full-bridge DC-AC converter with pulse width modulation technique using a step down Cycloconverter is implemented. The zero-voltage switching (ZVS) commutation for full-bridge high frequency inverter active power switches and the Cycloconverter bi-directional switches are obtained. Soft switching operation is provided in a wide range of voltage regulation without utilizin...

Drive efficiency is an important consideration in most robotic applications. A hybrid controller for permanent magnet DC motors has been developed to control the current, and hence the output torque of the motor. An H bridge is used to provide the basic PWM voltage to the motor, and the controller switches the bridge between bipolar and unipolar modes in order to minimise the switching losses w...

This article presents a ground breaking traction drive for fuel cell-powered light rail vehicles based on multilevel cascade converter with H-bridge cells. The provides dc–ac power conversion unique buck–boost capability to compensate the variation of cell terminal voltage load power. In comparison conventional boost inverter, connection dc–dc and source proposed has significant benefits much s...

This research presents a study, modelling and simulation of the piezoelectric material work as filters (piezoelectric filter) used to eliminate harmonics in power electronic circuits, high order are generating due switching frequencies circuit equipment, detailed is achieved for filter tested full-bridge DC/DC converter with resistive load works dc supply (12 48 volt). As result, uses have grea...

A diode rectifier-modular multilevel converter AC/DC hub (DR-MMC Hub) is proposed to integrate offshore wind power the onshore DC network and production platforms (e.g., oil/gas hydrogen plants) with different voltage levels. The DR MMCs are connected in parallel at AC collection power, series terminals of platform network. Compared conventional parallel-connected DR-MMC HVDC systems, reduces r...

Proton exchange membrane fuel cells (PEMFC) have been increasingly applied in clean and efficient distributed power generation systems recent years. However, the output characteristics of PEMFC are relatively soft due to influence multiple polarization overvoltage. With increasement current density, voltage shows be a nonlinear downward trend. In addition, order ensure lifetime PEMFC, ripple is...