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This paper proposes a new ZVT-ZCT bidirectional DC-DC converter for energy storage systems in DC traction vehicles. The conventional hard-switched converter have turn-on/off losses which may affect the overall converter efficiency. The proposed converter utilizes an auxiliary circuit with resonant inductor, capacitor and diodes. This converter has two important features like zero-voltage transition...
This paper presents and evaluates the effect of charge/discharge rate on the supercapacitorpsilas temperature. Experiments show that during charging the temperature rises more than during discharging. The paper also investigates the supercapacitorpsilas energy efficiency as a function of the discharge time and the level of the voltage discharge ratio. Where the voltage discharge ratio is defined as...
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