3-PHASE HIGH-POWER UPS
First Claim
1. Power converter circuitry comprising:
- an input including a plurality of input lines each configured to be coupled to a phase of a multiphase AC power source having a sinusoidal waveform;
a plurality of DC buses including a first positive DC bus having a first nominal DC voltage, a second positive DC bus having a second nominal DC voltage, a first negative DC bus having a third nominal DC voltage and a second negative DC bus having a fourth nominal DC voltage;
a first power converter coupled to the input and configured to supply power from the multiphase AC power source to the plurality of DC buses during a first positive region of the sinusoidal waveform and a first negative region of the sinusoidal waveform; and
a second power converter coupled to the input and configured to supply power from the multiphase AC power source to at least some of the plurality of DC buses during a second positive region of the sinusoidal waveform and a second negative region of the sinusoidal waveform.
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Accused Products
Abstract
According to one aspect, embodiments of the invention provide power converter circuitry including an input including a plurality of input lines each configured to be coupled to a phase of a multiphase AC power source having a sinusoidal waveform, a plurality of DC buses including a first positive DC bus having a first nominal DC voltage, a second positive DC bus having a second nominal DC voltage, a first negative DC bus having a third nominal DC voltage and a second negative DC bus having a fourth nominal DC voltage; a first power converter coupled to the input and configured to supply power from the multiphase AC power source to the plurality of DC buses during a first positive region of the sinusoidal waveform and a first negative region of the sinusoidal waveform; and a second power converter coupled to the input and configured to supply power from the multiphase AC power source to at least some of the plurality of DC buses during a second positive region of the sinusoidal waveform and a second negative region of the sinusoidal waveform.
97 Citations
20 Claims
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1. Power converter circuitry comprising:
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an input including a plurality of input lines each configured to be coupled to a phase of a multiphase AC power source having a sinusoidal waveform; a plurality of DC buses including a first positive DC bus having a first nominal DC voltage, a second positive DC bus having a second nominal DC voltage, a first negative DC bus having a third nominal DC voltage and a second negative DC bus having a fourth nominal DC voltage; a first power converter coupled to the input and configured to supply power from the multiphase AC power source to the plurality of DC buses during a first positive region of the sinusoidal waveform and a first negative region of the sinusoidal waveform; and a second power converter coupled to the input and configured to supply power from the multiphase AC power source to at least some of the plurality of DC buses during a second positive region of the sinusoidal waveform and a second negative region of the sinusoidal waveform. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of providing AC output power from a UPS, the UPS comprising a multiphase AC input, a plurality of DC buses including a first positive DC bus, a second positive DC bus, a first negative DC bus and a second negative DC bus, power converter circuitry including a first power converter and a second power converter each coupled to the AC input and at least one of the plurality of DC buses, the method comprising acts of:
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supplying power from the multiphase AC input to an input of the first power converter and providing power to the plurality of DC buses from an output of the first power converter during a first positive region of a sinusoidal waveform provided from the multiphase AC input and during a first negative region of the sinusoidal waveform; supplying power from the multiphase AC input to an input of the second power converter and providing power to at least some of the plurality of DC buses from an output of the second power converter during a second positive region of the sinusoidal waveform and during a second negative region of the sinusoidal waveform; and converting power supplied from the plurality of DC buses to AC output power provided at an AC output of the UPS. - View Dependent Claims (11, 12, 13, 14)
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15. A method of providing AC output power from a UPS, the UPS including, an AC input, a first power converter coupled to the AC input, a second power converter coupled to the AC input, a DC power source and a DC bus, the method comprising acts of:
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supplying power from the AC input to an input of the first power converter and providing power to the DC bus from an output of the first power converter in a first operating state of the UPS; supplying power from the AC input to an input of the second power converter and providing power to the DC bus from an output of the second power converter in each of the first operating state of the UPS and in a second operating state of the UPS; supplying power from the DC power source to the input of the first power converter and providing power to the DC bus from the output of the first power converter in the second operating state of the UPS; and converting power supplied from the DC bus to AC output power provided at an AC output of the UPS in each of the first operating state and the second operating state. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification