- 专利标题: Method and apparatus for activation and de-activation of power conditioners in distributed resource island systems using low voltage AC
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申请号: US15047337申请日: 2016-02-18
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公开(公告)号: US10126721B2公开(公告)日: 2018-11-13
- 发明人: Donald Richard Zimmanck , Christopher N. Rowe , John Scott Berdner
- 申请人: Enphase Energy, Inc.
- 申请人地址: US CA Petaluma
- 专利权人: Enphase Energy, Inc.
- 当前专利权人: Enphase Energy, Inc.
- 当前专利权人地址: US CA Petaluma
- 代理机构: Moser Taboada
- 主分类号: H02J3/00
- IPC分类号: H02J3/00 ; G05B15/02 ; H02J3/14
摘要:
Methods and apparatus for controlling power conditioners in a distributed resource island are provided herein. In one embodiment, an input of a power conditioner that is operating in a de-energized state and coupled to an islanded grid is compared to an input threshold. When the input exceeds the input threshold, the power conditioner is operated in a soft-grid mode to generate a touch-safe AC voltage that is coupled to the islanded grid. The power conditioner compares an impedance of the islanded grid to a grid impedance range and compares load demand of the power conditioner to an activate threshold; when the impedance is within the grid impedance range and the load demand exceeds the activate threshold, the power conditioner is activated to operate proximate its nominal output voltage.
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