Charging system for reducing harmonic wave and fabricating cost
First Claim
1. A charging system for charging a chargeable battery, said charging system comprising:
- a phase-shifting transformer comprising a three-phase primary winding assembly and plural three-phase secondary winding assemblies, wherein after a three-phase AC input voltage is received by said three-phase primary winding assembly, said three-phase AC input voltage is decreased into plural three-phase AC output voltages, and said plural three-phase AC output voltages are outputted from respective three-phase secondary winding assemblies, wherein there is a phase-shifting angle between any two of said plural three-phase AC output voltages; and
a converting unit electrically connected with said phase-shifting transformer, and comprising plural three-phase rectifying circuits and a DC-DC converting circuit, wherein said plural three-phase AC output voltages are rectified by said three-phase rectifying circuits, and said rectified voltage is converted into a DC charging voltage to charge said chargeable battery;
wherein said three-phase AC input voltage has a medium-high voltage level in a range between 1.2 KV and 22 KV.
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Abstract
A charging system is provided for charging a chargeable battery. The charging system includes a phase-shifting transformer and a converting unit. The phase-shifting transformer includes a three-phase primary winding assembly and plural three-phase secondary winding assemblies. After a three-phase AC input voltage is received by the three-phase primary winding assembly, the three-phase AC input voltage is decreased, so that plural three-phase AC output voltages are outputted from respective three-phase secondary winding assemblies. The converting unit is electrically connected with the phase-shifting transformer, and includes plural three-phase rectifying circuits and a DC-DC converting circuit. The plural three-phase AC output voltages are rectified by the three-phase rectifying circuits, and the rectified voltage is converted into a DC charging voltage to charge the chargeable battery.
39 Citations
11 Claims
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1. A charging system for charging a chargeable battery, said charging system comprising:
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a phase-shifting transformer comprising a three-phase primary winding assembly and plural three-phase secondary winding assemblies, wherein after a three-phase AC input voltage is received by said three-phase primary winding assembly, said three-phase AC input voltage is decreased into plural three-phase AC output voltages, and said plural three-phase AC output voltages are outputted from respective three-phase secondary winding assemblies, wherein there is a phase-shifting angle between any two of said plural three-phase AC output voltages; and a converting unit electrically connected with said phase-shifting transformer, and comprising plural three-phase rectifying circuits and a DC-DC converting circuit, wherein said plural three-phase AC output voltages are rectified by said three-phase rectifying circuits, and said rectified voltage is converted into a DC charging voltage to charge said chargeable battery; wherein said three-phase AC input voltage has a medium-high voltage level in a range between 1.2 KV and 22 KV. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification