发明名称 |
METHODS FOR ANTI-ISLANDING IN DISTRIBUTED-SOURCE ELECTRICAL POWER GENERATION AND DISTRIBUTION SYSTEMS AND ELECTRICAL SYSTEMS AND APPARATUS USING SAME |
摘要 |
A method of detecting an interruption of grid electrical power at an output of an inverter power train coupled to an electrical grid includes generating a reference waveform representing a power train output current waveform with a current control loop. An out-of-phase control signal is generated, which is synchronized and out-of-phase with a grid voltage waveform, with a voltage control loop coupled to the output of the inverter power train, the voltage control loop having a gain proportional to an inverter power train load impedance. The reference waveform and the out-of-phase control signal are combined to generate a power train control signal for producing a small phase difference between the inverter power train output current waveform and the grid voltage waveform. The inverter power train output is monitored for a change and the inverter power train is turned off in response to a change in the inverter power train output caused by an increase in inverter power train load impedance resulting from an interruption in the grid electrical power. |
申请公布号 |
EP2957015(A2) |
申请公布日期 |
2015.12.23 |
申请号 |
EP20140703627 |
申请日期 |
2014.01.20 |
申请人 |
AEG POWER SOLUTIONS B.V. |
发明人 |
ELLIOTT, WILLIAM, DEWEY, II |
分类号 |
H02J3/38 |
主分类号 |
H02J3/38 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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