发明名称 |
SYSTEM AND METHOD FOR LOW SPEED CONTROL OF POLYPHASE AC MACHINE |
摘要 |
A power converter configured to improve power capture in a wind turbine during low wind speed operation is disclosed. The power converter converts the power generated by the alternator of the wind turbine into a suitable AC current for delivery to a utility grid or to an electric load independent of the utility grid. The power converter is configured to operate in multiple operating modes, utilizing both synchronous and non-synchronous control methods, to extend the operating range of the power converter. During non-synchronous operation, the power converter utilizes a modulation routine that may either vary the dead-time compensation period during a constant modulation period or vary the modulation period with a constant on-time. A seamless transfer between non-synchronous and synchronous control methods with low total harmonic distortion (THD) improves the range of power generation for wind generators. |
申请公布号 |
EP2795789(A4) |
申请公布日期 |
2016.07.13 |
申请号 |
EP20120859814 |
申请日期 |
2012.12.19 |
申请人 |
ZBB ENERGY CORPORATION |
发明人 |
REICHARD, JEFFREY, A.;JOBE, NATHAN;LAUBENSTEIN, THOMAS, ALAN |
分类号 |
H02P9/08;H02J3/38;H02M5/453;H02M7/219;H02P23/03 |
主分类号 |
H02P9/08 |
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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