Magnetic components are important parts of the phase shifted full bridge (PSFB) converter. During the dead-time of switches located in the same leg, the converter can achieve zero-voltage-switching (ZVS) by using the energies stored in magnetic components to discharge or charge the output capacitances of switches. Dead-time is usually calculated under a given set of pre-defined load condition w...

Generally, power electronic converters are designed to obtain the highest efficiency at rated while they most often operated under partial loading conditions. For dual active bridge converters, zero-voltage-switching (ZVS) conditions can be impaired light load situations. While depending ZVS operation has been introduced by prior-art approaches, nonlinear characteristic of output capacitance in...

In this paper, the method and a control algorithm for detecting resonant destruction of auxiliary power supply railway vehicle are proposed. It is essential to reduce weight electric equipment attached lower part because it greatly affects life vehicle, such as wheel bearing. order volume supply, in case windings, high-speed switching should be performed by lowering input voltage. Therefore, us...

In this paper, a high-efficiency fuel cell implemented by an LLC resonant dc–dc converter is proposed to save the cost and energy of fuel cell. The proposed converter has zero-voltage switching (ZVS) operation of the primary switches and zero-current switching (ZCS) operation of the rectifier diodes. By frequency modulation control, the output impedance of an LLC resonant converter can be regul...

Abstract: Frequency drift is a serious problem in Current-Fed Wireless Power Transfer (WPT) systems. When the operating frequency is drifting from the inherent Zero Voltage Switching (ZVS) frequency of resonant network, large short currents will appear and damage the switches. In this paper, an inductance-dampening method is proposed to inhibit short currents and achieve constant-frequency oper...

Zero voltage switching (ZVS) is useful to increase power electronics efficiency but difficult achieve due the non-linear parasitic capacitance of semiconductors and varying load current. This letter proposes a self-adaptive ZVS method by using intrinsic electroluminescence (EL) property SiC MOSFETs automatically adjust frequency in every cycle retain optimal A sensing circuit developed digitall...

This study offers a thorough examination of the zero voltage switching (ZVS) operation range and deadband conditions for bidirectional DC-DC converter with phase shift control, featuring dual H-bridge. The analysis considers soft DAB converter, accounting impact headband ZVS capacitor. By applying differential equation circuit during time, sufficient constraint input output bridges can be calcu...

This paper presents a two-stage DC/DC converter with high efficiency utilized in an electronic power conditioner (EPC), which is widely applicable satellite communications, etc. The galvanically isolated contains two cascaded converters: buck converter, pre-regulator operating under closed-loop condition, and push–pull intended to boost the input voltage, open-loop condition. In switches, inclu...

This article proposes a new Zero-Voltage Switching (ZVS) high step-up DC/DC converter based on built-in transformer for renewable energy applications. The proposed topology utilizes Three-Winding Built-In Transformer (TWBT) to increase the voltage gain, but unlike most coupled-inductor-based DC-DC converters, output voltages can be obtained under lower magnetic turns ratio. In this circuit, wit...

This paper presents the supercapacitor power management method for the Hybrid Electricals Vehicles.A simple zero-voltage switching(ZVS) interleaved boost power factor correction(PFC) AC/DC converter is used to charge the traction battery of an Hybrid Electrical Vehicle. The auxiliary circuit provides limited current to charge and discharge the MOSFETs output capacitors during turn-On times at z...