Bidirectional high frequency variable speed drive for CHP (combined heating and power) and flywheel applications
First Claim
1. A bidirectional high frequency variable speed drive configured to connect to a utility grid and an electrical machine, comprising:
- a plurality of inductors each configured to connect to respective phase outputs of the electrical machine, the electrical machine driven by at least one phase;
a first plurality of power switches connected to the plurality of inductors;
a second plurality of power switches connected to the plurality of inductors; and
an electrical machine interfacing controller connected to the first and second plurality of power switches, the electrical machine interfacing controller controlling an operating speed of the electrical machine, and comprising a positive and a zero sequence controller,wherein a first output of the first plurality of power switches are interleaved to a second output of the second plurality of power switches, and the controller generates control signals based on an operating status and a predetermined operating status of the electrical machine.
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Accused Products
Abstract
The present invention provides a bidirectional high frequency speed drive configured to connect to a utility grid and an electrical machine. The bidirectional high frequency variable speed drive comprises a plurality of inductors each configured to connect to respective phase outputs of the electrical machine, a first plurality of power switches connected to the plurality of inductors, a second plurality of power switches connected to the plurality of inductors, and a controller connected to the first and second plurality of power switches. The controller can generate control signals based on an operating status and a predetermined operating status of the electrical machine. The first output of the first plurality of power switches can be interleaved to a second output of the second plurality of power switches. The present invention also provides methods for the bidirectional high frequency speed drive and apparatuses used to perform the methods of the present invention.
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Citations
18 Claims
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1. A bidirectional high frequency variable speed drive configured to connect to a utility grid and an electrical machine, comprising:
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a plurality of inductors each configured to connect to respective phase outputs of the electrical machine, the electrical machine driven by at least one phase; a first plurality of power switches connected to the plurality of inductors; a second plurality of power switches connected to the plurality of inductors; and an electrical machine interfacing controller connected to the first and second plurality of power switches, the electrical machine interfacing controller controlling an operating speed of the electrical machine, and comprising a positive and a zero sequence controller, wherein a first output of the first plurality of power switches are interleaved to a second output of the second plurality of power switches, and the controller generates control signals based on an operating status and a predetermined operating status of the electrical machine. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A bidirectional high frequency variable speed drive configured to connect to a utility grid and an electrical machine, comprising:
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a plurality of inductors each configured to connect to respective phase outputs of the electrical machine, the electrical machine driven by at least one phase; a first plurality of power switches connected to the plurality of inductors; a second plurality of power switches connected to the plurality of inductors; an electrical machine interfacing controller connected to the first and second plurality of power switches, wherein a first output of the first plurality of power switches are interleaved to a second output of the second plurality of power switches, and the electrical machine interfacing controller generates control signals based on an operating status and a predetermined operating status of the electrical machine; and a utility grid interfacing controller configured to control a DC bus voltage supplied to a third plurality of power switches configured to connect to the utility grid, wherein the utility grid interfacing controller controls a DC bus voltage supplied to the first and second plurality of power switches, and the utility grid interfacing controller comprises a negative sequence controller. - View Dependent Claims (16, 17, 18)
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Specification