Capacitor module and matrix convertor
US-2015372609-A1 · Dec 24, 2015 · US
Power conversion device that converts AC to AC
US9973101B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9973101-B2 |
| Application number | US-201515116539-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 27, 2015 |
| Priority date | Feb 7, 2014 |
| Publication date | May 15, 2018 |
| Grant date | May 15, 2018 |
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Abstract
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A power conversion circuit uses a multiphase AC power source as an input and has a plurality of bidirectional switches each of which is connected to each phase of the multiphase AC power source. A switching control circuit controls the states of the plurality of bidirectional switches and switches a combination of two phases of the multiphase AC power source, relating to interphase voltage to be outputted from the power conversion circuit to a load side. A resonant circuit is connected to an output side of the power conversion circuit. The switching control circuit, at a time of switching of the combination of the two phases that output the interphase voltage to the load side, switches the states of the bidirectional switches relating to the switching, by soft switching.
First claim
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What is claimed is: 1. A power conversion device that converts AC to AC, comprising: a power conversion circuit that uses a multiphase AC power source as an input and has a plurality of bidirectional switches each of which is connected to each phase of the multiphase AC power source; a switching control circuit that controls states of the plurality of bidirectional switches and switches a combination of two phases of the multiphase AC power source, relating to an interphase voltage to be outputted from the power conversion circuit to a load side; and a resonant circuit that is connected to an output side of the power conversion circuit, wherein: at a time of switching of the combination of the two phases that output the interphase voltage to the load side, the switching control circuit switches the states of the plurality of bidirectional switches relating to the switching, by soft switching; and a resonant frequency of the resonant circuit is a same as a frequency of the interphase voltage outputted from the power conversion circuit to the load side by controlling the states of the plurality of bidirectional switches by the switching control circuit. 2. The power conversion device that converts AC to AC according to claim 1 , wherein the power conversion circuit has a capacitor that is connected in parallel to the plurality of bidirectional switches. 3. The power conversion device that converts AC to AC according to claim 2 , wherein: the plurality of bidirectional switches each have two switching elements that are connected in reverse parallel to each other; and the capacitor is connected between a collector and an emitter of the switching elements. 4. The power conversion device that converts AC to AC according to claim 2 , wherein: the plurality of bidirectional switches each have two switching elements that are connected in reverse parallel to each other; the capacitor is connected between a collector and an emitter of the switching elements; and the switching control circuit, at the time of switching of the combination of the two phases that output the interphase voltage to the load side, sequentially switches states of the switching elements included in the plurality of bidirectional switches relating to the switching, by the soft switching.
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- What does patent US9973101B2 cover?
- A power conversion circuit uses a multiphase AC power source as an input and has a plurality of bidirectional switches each of which is connected to each phase of the multiphase AC power source. A switching control circuit controls the states of the plurality of bidirectional switches and switches a combination of two phases of the multiphase AC power source, relating to interphase voltage to b…
- Who is the assignee on this patent?
- Univ Hokkaido Nat Univ Corp, Omron Tateisi Electronics Co, Omrom Corp
- What technology area does this patent fall under?
- Primary CPC classification H02M5/297. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue May 15 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).