A HIGH GAIN INPUT-PARALLEL OUTPUT-SERIES DC/DC CONVERTER
- High voltage gain dc–dc converters are required in
many industrial applications such as photovoltaic and fuel cell energy systems,
high-intensity discharge lamp (HID), dc back-up energy systems, and electric
vehicles.
- This article presents a novel input-parallel output-series boost
converter with dual coupled inductors and a voltage multiplier module.
- On the
one hand, the primary windings of two coupled inductors are connected in
parallel to share the input current and reduce the current ripple at the input.
- On the other hand, the proposed converter inherits the merits of interleaved
series-connected output capacitors for high voltage gain, low output voltage
ripple, and low switch voltage stress.
- Moreover, the secondary sides of two
coupled inductors are connected in series to a regenerative capacitor by a
diode for extending the voltage gain and balancing the primary-parallel
currents.
- In addition, the active switches are turned on at zero current and
the reverse recovery problem of diodes is alleviated by reasonable leakage
inductances of the coupled inductors.
- Besides, the energy of leakage
inductances can be recycled.
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