Electric power generating system for multiple sources and interface to an AC grid
First Claim
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1. An electric power generating system comprising:
- a plurality of variable power sources including at least one source of DC power and at least one source of AC power;
upstream converters for converting power supplied by said plurality of power sources to a common source of power communicated to a common collector bus;
a power grid for supplying three-phase power to components requiring three-phase power, and downstream on said common collector bus;
downstream converters for providing said three phases of power to said power grid from said common collector bus;
said common collector bus being a high voltage DC bus;
a DC link inverter being positioned intermediate said common collector bus and said downstream converters, and said DC link inverter providing power to motor driven loads;
said downstream converters being DC to AC converters with modulation to change DC power from said common collector bus to a phase of AC power for delivery to said three-phase power grid; and
said converters including a high frequency converter, a transformer, and a single pole bi-directional switch, and there are at least 3 of said converters to provide 3 phases of AC power.
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Abstract
An electric power generating system includes a plurality of variable power sources including at least one source of DC power and at least one source of AC power. Converters convert power supplied by the plurality of power sources to a common source of power to be communicated to a collector bus. A power grid supplies three-phase power to components requiring three-phase power downstream of the collector bus. Converters provide three phases of power to the power bus from the collector bus.
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Citations
11 Claims
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1. An electric power generating system comprising:
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a plurality of variable power sources including at least one source of DC power and at least one source of AC power; upstream converters for converting power supplied by said plurality of power sources to a common source of power communicated to a common collector bus; a power grid for supplying three-phase power to components requiring three-phase power, and downstream on said common collector bus; downstream converters for providing said three phases of power to said power grid from said common collector bus; said common collector bus being a high voltage DC bus; a DC link inverter being positioned intermediate said common collector bus and said downstream converters, and said DC link inverter providing power to motor driven loads; said downstream converters being DC to AC converters with modulation to change DC power from said common collector bus to a phase of AC power for delivery to said three-phase power grid; and said converters including a high frequency converter, a transformer, and a single pole bi-directional switch, and there are at least 3 of said converters to provide 3 phases of AC power. - View Dependent Claims (2, 3, 4)
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5. An electric power generating system comprising:
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a plurality of variable power sources including at least one source of DC power and at least one source of AC power; upstream converters for converting power supplied by said plurality of power sources to a common source of power communicated to a common collector bus; a power grid for supplying three-phase power to components requiring three-phase power, and downstream on said common collector bus; downstream converters for providing said three phases of power to said power grid from said common collector bus; and said common collector bus including a high frequency single phase constant voltage bus. - View Dependent Claims (6, 7)
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8. An electric power generating system comprising:
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a plurality of variable power sources including at least one source of DC power and at least one source of AC power; upstream converters for converting power supplied by said plurality of power sources to a common source of power communicated to a common collector bus; a power grid for supplying three-phase power to components requiring three-phase power, and downstream on said common collector bus; downstream converters for providing said three phases of power to said power grid from said common collector bus; and said common collector bus is a high frequency three-phase common collector bus modulated by half wave sinusoidal waveform with the frequency equal to twice the power grid frequency. - View Dependent Claims (9, 10, 11)
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Specification