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This paper presented an approach to improve efficiency of EV batteries charger under light load. On the basis of analysis on the original charger built upon capacitor-diode-diode clamp circuit, a modified capacitor-diode-switching clamp circuit was designed to replace the original one in the full-bridge phase-shifted zero-voltage and zero-current-switching PWM DC/DC converter. Operating principle...
After the working principle and states of a new type of single-phase differential single-stage inverter based on classic BOOST DC/DC converters being analyzed, a topology family of single-phase and three-phase single-stage inverters are be concluded and be brought forward as a “BOOK” inverter name in the same differential working idea. The mathematical characteristics of single-phase and three-phase...
This paper presents and investigates planar and coaxial high frequency power transformers used for DC/DC converters in a three phase photo voltaic (PV) power systems. The winding structure including a Faraday shield between the primary and secondary windings is designed to minimize eddy current losses, skin and proximity effects, and to reduce the leakage inductance, and the inter winding coupling...
The fuel cell and the accumulator and/or super-capacitor are connected to the same voltage bus through an appropriate multiport DC/DC converter, in fuel cell electric vehicle. The accumulator and/or the super-capacitor are auxiliary energy source, which provides or absorbs the dynamic power when the load varies and the main power supply cannot respond immediately, so the system dynamic characteristics...
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