Split laminated DC bus structure
First Claim
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1. A motor drive, comprising:
- an input for receiving input electrical power from a power source;
an output for providing output electrical power to a load;
a DC circuit including a DC bus connecting the input and the output; and
a capacitor bus electrically coupled with the DC circuit, the capacitor bus including a planar surface and at least one capacitor mounted thereto, the at least one capacitor extending outwardly from a single side of said planar surface;
wherein the capacitor bus includes a laminated bus structure mounted as a unit to the DC bus, the laminated bus structure having a first positive conductor and a first negative conductor forming a first pair of conductors, and a second positive conductor and a second negative conductor forming a second pair of conductors, the at least one capacitor being coupled to one of the first or second pair of conductors.
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Abstract
An apparatus and method for mounting additional components, such as capacitors, to a DC bus of a motor drive. In one aspect, a motor drive includes an enclosure defining an interior, an input for receiving input electrical power from a power source, an output for providing output electrical power to a load, an intermediate DC circuit including a DC bus located in the interior of the enclosure, and a modular capacitor bus electrically coupled with the intermediate DC circuit, the modular capacitor bus including at least one capacitor mounted thereto. The modular capacitor bus is mountable as a unit to the DC bus.
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Citations
17 Claims
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1. A motor drive, comprising:
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an input for receiving input electrical power from a power source; an output for providing output electrical power to a load; a DC circuit including a DC bus connecting the input and the output; and a capacitor bus electrically coupled with the DC circuit, the capacitor bus including a planar surface and at least one capacitor mounted thereto, the at least one capacitor extending outwardly from a single side of said planar surface; wherein the capacitor bus includes a laminated bus structure mounted as a unit to the DC bus, the laminated bus structure having a first positive conductor and a first negative conductor forming a first pair of conductors, and a second positive conductor and a second negative conductor forming a second pair of conductors, the at least one capacitor being coupled to one of the first or second pair of conductors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A capacitor bus electrically couplable to an associated DC power bus comprising:
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a plurality of insulator layers; a plurality of conductor layers, each conductor layer disposed between respective insulator layers; at least two terminals for electrically coupling at least two of the conductor layers to the associated DC power bus; wherein each conductor layer includes at least one capacitor terminal for connecting the conductor layer to an associated capacitor, each of the capacitor terminals accessible from a single common side of the modular capacitor bus; wherein the capacitor bus includes a planar surface bounded by a peripheral edge, each capacitor terminal being spaced from the peripheral edge; whereby a plurality of capacitors can be connected to respective pairs of the plurality of conductor layers and supported on said single side of said capacitor bus; wherein the capacitor bus includes a laminated bus structure; wherein the laminated bus structure has a first positive conductor and a first negative conductor forming a first pair of conductors, and a second positive conductor and a second negative conductor forming a second pair of conductors, whereby the plurality of capacitors are couplable to one of the first or second pair of conductors. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A method of mounting a plurality of capacitors to a DC power bus comprising:
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mounting at least two capacitors to a capacitor bus having a laminated bus structure having a first positive conductor and a first negative conductor forming a first pair of conductors, and a second positive conductor and a second negative conductor forming a second pair of conductors, a plurality of conductor layers, each conductor layer disposed between adjacent insulator layers, the at least two capacitors being supported on a single first side of the capacitor; electrically coupling the at least two capacitors to a respective pair of conductor layers of the capacitor bus via capacitor terminals accessible from a single side of the capacitor bus; mounting the capacitor bus to a DC power bus such that a second side of the capacitor bus opposite the first side faces the DC power bus, the capacitor bus and DC power bus being in spaced relation to each other such that air can circulate therebetween; and electrically coupling the capacitor bus to the DC power bus. - View Dependent Claims (16, 17)
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Specification