PARALLEL AC SWITCHING WITH SEQUENTIAL CONTROL
First Claim
Patent Images
1. A system comprising:
- a first switch to transfer power between an AC power source and a load;
a second switch coupled in parallel with the first switch; and
a controller to operate the first and second switches during different portions of a waveform of the AC power source.
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Abstract
Parallel switches arranged to transfer power between an AC power source and a load may be individually operated during different portions of the AC waveform. In some embodiments, the switches may be operated during alternate cycles of the waveform to cause the individual switches to sequentially conduct the entire load current.
34 Citations
31 Claims
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1. A system comprising:
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a first switch to transfer power between an AC power source and a load; a second switch coupled in parallel with the first switch; and a controller to operate the first and second switches during different portions of a waveform of the AC power source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method comprising:
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operating first and second switches coupled in parallel between an AC power source and a load; where the first and second switches are operated during different portions of a waveform of the AC power source. - View Dependent Claims (20, 21, 22, 23, 24)
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25. A controller comprising:
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first and second sense terminals to sense the waveform of an AC power source; a first control terminal to control a first switch; a second control terminal to control a second switch that may be coupled in parallel with the first switch to transfer power between the AC power source and a load; and control circuitry to operate the first and second switches during different portions of a waveform of the AC power source. - View Dependent Claims (26, 27)
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28. A wiring device comprising:
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a first terminal to connect the wiring device to building wiring; a second terminal to connect the wiring device to building wiring; a first switch coupled between the first and second terminals to transfer AC power between the first and second terminals; a second switch coupled in parallel with the first switch; and a controller to operate the first and second switches sequentially during alternate cycles of the AC power. - View Dependent Claims (29, 30, 31)
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Specification