POWER CONVERSION DEVICE
First Claim
1. A power conversion device comprising:
- a transformer composed of three or more windings magnetically coupled with each other, the windings including a first winding;
a first switching circuit connected to the first winding;
an AC/DC converter having a DC side connected to an input part of the first switching circuit, and converting input power from an AC power supply to DC;
a voltage detector for detecting DC side voltage of the AC/DC converter; and
a switching circuit and a load which are connected to the other one or more of the windings besides the first winding, whereinthe first switching circuit supplies AC power to the first winding at a predetermined time ratio, and at least one of the switching circuit on a load side connected via the transformer controls voltage on an output side of the AC/DC converter, based on both a detected voltage value detected by the voltage detector and a target voltage value.
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Accused Products
Abstract
A power conversion device that distributes input power to multiple outputs in accordance with power requirement of a load, using a plurality of magnetically coupled windings. In the case of supplying power from an AC power supply, at least one of an AC/DC converter and first to fourth switching circuits controls voltage on an output side of the AC/DC converter, based on a deviation between a detected value and a target value of the voltage. In the case of supplying power from a first DC voltage source or a second DC voltage source, the second switching circuit or the fourth switching circuit provided between the first DC voltage source or the second DC voltage source and the transformer supplies power based on an arbitrary time ratio.
32 Citations
16 Claims
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1. A power conversion device comprising:
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a transformer composed of three or more windings magnetically coupled with each other, the windings including a first winding; a first switching circuit connected to the first winding; an AC/DC converter having a DC side connected to an input part of the first switching circuit, and converting input power from an AC power supply to DC; a voltage detector for detecting DC side voltage of the AC/DC converter; and a switching circuit and a load which are connected to the other one or more of the windings besides the first winding, wherein the first switching circuit supplies AC power to the first winding at a predetermined time ratio, and at least one of the switching circuit on a load side connected via the transformer controls voltage on an output side of the AC/DC converter, based on both a detected voltage value detected by the voltage detector and a target voltage value. - View Dependent Claims (2, 3, 4, 5, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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6. (canceled)
Specification