Published July 3, 2016
| Version 10005329
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Zero Voltage Switched Full Bridge Converters for the Battery Charger of Electric Vehicle
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This paper illustrates the study of three isolated zero
voltage switched (ZVS) PWM full bridge (FB) converters to charge
the high voltage battery in the charger of electric vehicle (EV).
EV battery chargers have several challenges such as high efficiency,
high reliability, low cost, isolation, and high power density. The
cost of magnetic and filter components in the battery charger is
reduced when switching frequency is increased. The increase in the
switching frequency increases switching losses. ZVS is used to reduce
switching losses and to operate the converter in the battery charger
at high frequency. The performance of each of the three converters
is evaluated on the basis of ZVS range, dead times of the switches,
conduction losses of switches, circulating current stress, circulating
energy, duty cycle loss, and efficiency. The limitations and merits of
each PWM FB converter are reviewed. The converter with broader
ZVS range, high efficiency and low switch stresses is selected for
battery charger applications in EV.
voltage switched (ZVS) PWM full bridge (FB) converters to charge
the high voltage battery in the charger of electric vehicle (EV).
EV battery chargers have several challenges such as high efficiency,
high reliability, low cost, isolation, and high power density. The
cost of magnetic and filter components in the battery charger is
reduced when switching frequency is increased. The increase in the
switching frequency increases switching losses. ZVS is used to reduce
switching losses and to operate the converter in the battery charger
at high frequency. The performance of each of the three converters
is evaluated on the basis of ZVS range, dead times of the switches,
conduction losses of switches, circulating current stress, circulating
energy, duty cycle loss, and efficiency. The limitations and merits of
each PWM FB converter are reviewed. The converter with broader
ZVS range, high efficiency and low switch stresses is selected for
battery charger applications in EV.
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References
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