AC-AC CONVERTER
First Claim
1. An AC-AC converter for receiving power from first and second AC input conductors and supplying power to first and second output conductors, comprising:
- a first semiconductor switch series circuit wherein first semiconductor switches, to each of which a diode is connected in anti-parallel, are connected in series;
a second semiconductor switch series circuit wherein second semiconductor switches, to each of which a diode is connected in anti-parallel, are connected in series,a capacitor series circuit wherein capacitors are connected in series, the capacitor series circuit being connected in parallel with the first and second semiconductor switch series circuits;
a first inductor connected between the first AC input conductor and a series connection point inside the first semiconductor switch series circuit;
a bidirectional switch connected between the first AC input conductor and a series connection point inside the second semiconductor switch series circuit; and
a second inductor connected between the series connection point inside the second semiconductor switch series circuit and the first AC output conductor,wherein a series connection point inside the capacitor series circuit is connected to the second AC input conductor and to the the second AC output conductor.
1 Assignment
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Accused Products
Abstract
An AC-AC converter configured of a forward converter that converts alternating current to direct current and a reverse converter that converts direct current to alternating current, wherein a first semiconductor switch series circuit, a second semiconductor switch series circuit, and a capacitor series circuit are connected in parallel, a first inductor is connected between one end of an alternating current input and a series connection point of the first semiconductor switch series circuit, a bidirectional switch is connected between the one end of the alternating current input and a series connection point of the second semiconductor switch series circuit, a second inductor is connected between the series connection point of the second semiconductor switch series circuit and one end of an alternating current output, and a series connection point of the capacitor series circuit is connected to the other end of the alternating current input and the other end of the alternating current output. Because of this, it is possible to keep the inductor loss of the rectifier sufficiently small when input voltage is within a specified range. Also, in addition to this, it is possible to reduce switching loss more than in heretofore known circuits when carrying out a compensation action.
18 Citations
10 Claims
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1. An AC-AC converter for receiving power from first and second AC input conductors and supplying power to first and second output conductors, comprising:
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a first semiconductor switch series circuit wherein first semiconductor switches, to each of which a diode is connected in anti-parallel, are connected in series; a second semiconductor switch series circuit wherein second semiconductor switches, to each of which a diode is connected in anti-parallel, are connected in series, a capacitor series circuit wherein capacitors are connected in series, the capacitor series circuit being connected in parallel with the first and second semiconductor switch series circuits; a first inductor connected between the first AC input conductor and a series connection point inside the first semiconductor switch series circuit; a bidirectional switch connected between the first AC input conductor and a series connection point inside the second semiconductor switch series circuit; and a second inductor connected between the series connection point inside the second semiconductor switch series circuit and the first AC output conductor, wherein a series connection point inside the capacitor series circuit is connected to the second AC input conductor and to the the second AC output conductor. - View Dependent Claims (2, 3, 4, 5, 8, 9, 10)
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6. An AC-AC converter for receiving power from first and second AC input conductors and supplying power to first and second output conductors, comprising:
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a first semiconductor switch series circuit wherein first semiconductor switches, to each of which a diode is connected in anti-parallel, are connected in series; a second semiconductor switch series circuit wherein second semiconductor switches, to each of which a diode is connected in anti-parallel, are connected in series; a capacitor series circuit wherein capacitors are connected in series, the capacitor series circuit being connected in parallel with the first and second semiconductor switch series circuits; a first inductor connected between the first AC input conductor and a series connection point inside the first semiconductor switch series circuit; a first bidirectional switch connected between the first AC input conductor and a series connection point inside the second semiconductor switch series circuit; a second bidirectional switch connected between a series connection point inside the capacitor series circuit and the series connection point inside the second semiconductor switch series circuit; and a second inductor connected between the series connection point inside the second semiconductor switch series circuit and the first AC output conductor, wherein the series connection point inside the capacitor series circuit is connected to the second AC input conductor and to the second AC output conductor. - View Dependent Claims (7)
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Specification