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US 9,960,708 B2Granted
Apparatus and method for an active-switched inverter using multiple frequencies
AssigneeFuturewei Technologies, Inc.
InventorDianbo Fu
Life of this patent
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Abstract
An inverter apparatus and method are provided for converting direct current to alternating current. The inverter circuit includes a first switch sub-circuit configured for electrical communication with a power source and switching at a first frequency. The inverter circuit further includes a second switch sub-circuit in electrical communication with the first switch sub-circuit. The second switch sub-circuit is configured for electrical communication with a load and switching at a second frequency different from the first frequency.
Claims17
An apparatus, comprising:
- an inverter circuit for converting a direct current to an alternating current, the inverter circuit including:
- a first switch sub-circuit configured for electrical communication with a power source and switching at a first frequency;
- and
- a second switch sub-circuit in electrical communication with the first switch sub-circuit, and configured for electrical communication with a load and switching at a second frequency different from the first frequency, wherein the second frequency is greater than the first frequency by at least a factor of ten;
- wherein the first switch sub-circuit includes a first transistor with a collector configured for electrical communication with the power source;
- a second transistor with an emitter configured for electrical communication with the power source;
- a third transistor with a collector in electrical communication with an emitter of the first transistor via a first node, and an emitter in electrical communication with ground;
- and a fourth transistor with an emitter in electrical communication with a collector of the second transistor via a second node, and a collector configured for electrical communication with ground.
5 more elements
A method, comprising:
- switching a first switch sub-circuit of an inverter circuit at a first frequency;
- and
- switching a second switch sub-circuit of the inverter circuit at a second frequency different from the first frequency, wherein the second frequency is greater than the first frequency by at least a factor of ten;
- wherein the first switch sub-circuit includes a first transistor with a collector configured for electrical communication with a power source;
- a second transistor with an emitter configured for electrical communication with the power source;
- a third transistor with a collector in electrical communication with an emitter of the first transistor via a first node, and an emitter in electrical communication with ground;
- and a fourth transistor with an emitter in electrical communication with a collector of the second transistor via a second node, and a collector configured for electrical communication with ground.
4 more elements
Dependencies are inferred from the claim text.