Power converter architecture employing at least one capacitor across a DC bus
First Claim
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1. A power converter, comprising:
- a housing;
a first DC bus structure;
a second DC bus structure electrically isolated from the first DC bus structure;
a circuit electrically coupled between the first and the second DC bus structures;
a high frequency capacitor comprising an anode and a cathode, the anode electrically coupled to the first DC bus structure and the cathode electrically coupled to the second DC bus structure; and
a bulk capacitor comprising an anode and a cathode, the anode electrically coupled to the first DC bus structure and the cathode electrically coupled to the second DC bus structure.
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Abstract
A power converter utilizes a high frequency capacitor and a bulk capacitor coupled across the DC terminals to reduce high frequency effect and voltage overshoot, leading to space and cost savings in power converter design. Each capacitor may be physically coupled adjacent the gate driver board via clips, clamps, and/or fasteners.
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Citations
20 Claims
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1. A power converter, comprising:
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a housing;
a first DC bus structure;
a second DC bus structure electrically isolated from the first DC bus structure;
a circuit electrically coupled between the first and the second DC bus structures;
a high frequency capacitor comprising an anode and a cathode, the anode electrically coupled to the first DC bus structure and the cathode electrically coupled to the second DC bus structure; and
a bulk capacitor comprising an anode and a cathode, the anode electrically coupled to the first DC bus structure and the cathode electrically coupled to the second DC bus structure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A power converter, comprising:
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a first housing;
a first DC bus bar comprising a number of terminals, at least a portion of the first DC bus bar received in the first housing with the terminals accessible from an exterior of the first housing;
a second DC bus bar comprising a number of terminals, the second DC bus bar received in the first housing with the terminals accessible from the exterior of the first housing;
a bridge circuit received in the first housing and electrically coupled between the first and the second DC bus bars;
a high frequency capacitor comprising an anode and a cathode, the anode electrically coupled to at least one terminal of the first DC bus bar and the cathode electrically coupled to at least one terminal of the second DC bus bar; and
a bulk capacitor comprising an anode and a cathode, the anode electrically coupled to at least one terminal of the first DC bus bar and the cathode electrically coupled to at least one terminal of the second DC bus bar. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A power converter, comprising:
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a first housing;
a substrate received in the first housing, the substrate comprising a number of regions;
a first DC bus bar comprising a first set of terminals, the first DC bus bar received at least partially in the first housing with the first set of terminals accessible from an exterior thereof;
a second DC bus bar comprising a second set of terminals, the second DC bus bar received at least partially in the first housing with the second set of terminals accessible from an exterior thereof;
a number of switches mounted to at least some of the regions of the substrate and electrically coupled to one another to form a bridge circuit electrically coupled between the first and the second DC bus bars;
a first film capacitor electrically coupled across the terminals of the first and the second DC bus bars; and
a second film capacitor electrically coupled across the terminalsof the first and the second DC bus bars. - View Dependent Claims (17, 18, 19, 20)
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Specification