Line power unit for micropower generation

Details Line power unit for micropower generation Line power unit for micropower generation

1998-08-26

2000-10-03

Han, Jessica

Electric power conversion systems

Current conversion

With means to introduce or eliminate frequency components

363 37, 318140, H02M 112, H02P 520

Patent

active

061282049

ABSTRACT:
A line power unit controls electrical power delivery to a grid from a three phase permanent magnet generator. A line power unit controller receives a power level command and controls a main inverter that draws DC power from a DC bus to deliver the commanded power to a grid. The DC bus is fed DC voltage via a three phase permanent magnet generator and a rectifier. The inverter delivers power to the grid via a filter, transformer and main contactor. The line power unit controller also controls the main contactor to break the connection with the grid. A precharge circuit draws power from the grid to precharge the DC bus to a precharge voltage. Alternatives include a start inverter separate from the main inverter that permits simultaneous delivery of power to the grid and commutation of the permanent magnet generator as a motor to spin an engine connected thereto at a speed sufficient to permit engine starting. Another alternative utilizes a single inverter for engine starting and power delivery which does not permit these operations to be simultaneously performed. Further alternatives include eliminating the transformer by utilizing a high-voltage rated main inverter.

REFERENCES:
patent: 5903116 (1999-05-01), Geis et al.
patent: 5905644 (1999-05-01), Blasko et al.

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