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This paper proposes the digital charge control method to boost converter operating with a type of nonlinear load, the constant power load. The constant power load is modeled theoretically, and model parameters are given in detail. Transfer functions of the boost converter with constant power load are deduced, and a small-signal model of the charge controlled current inner loop is presented. The digital...
This article presents the fuel cell electric vehicle (FCEV) power supply system configuration, and proposes a topology of high power interleaved boost converter for fuel cell. With thorough analysis of the operating principle of the converter, eight equivalent sub-circuits are described. According to the waveforms of the inductor current, the operation modes of the converter are classified to six...
This article proposes a novel topology of high power interleaved boost converter for fuel cell. With thorough analysis of the operating principle of the converter, eight equivalent sub-circuits are described. According to the waveforms of the inductor current, the operation modes of the converter are classified to six kinds, including CCM (continuous conducting mode) and DCM (discontinuous conducting...
Fuel cell engine cannot provide enough power at cold start. According to these, a 5 KW isolated boost full bridge (IBFB) converter is developed as the auxiliary power supply. With the IBFB converter, the 24 V DC of the auxiliary storage cell of the fuel cell electric vehicle (FCEV) is converted to a stabilized 300 V high DC. The IBFB converter is controlled with a double voltage and current loop based...
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