发明名称 |
Power inverter control for grid-tie transition |
摘要 |
A control system for a power inverter is disclosed. The power inverter may be configured to supply power to a grid. The control system may include a plurality of output voltage sensors and a plurality of output current sensors configured to measure output line voltages and output line currents of the power inverter. The control system may further include a controller coupled to the power inverter. The controller may be configured to provide a control signal associated with a disturbance frequency to the power inverter. The controller may be further configured to determine an output power of the power inverter based on the output line voltages and output line currents, and determine an amplitude of oscillation in the output power caused by the disturbance frequency. The controller may also be configured to detect an islanding condition, if the amplitude of oscillation is below a threshold. The control system may further include an interface circuit coupled to the controller and configured to disconnect the grid from the power inverter if the islanding condition is detected. |
申请公布号 |
US8068352(B2) |
申请公布日期 |
2011.11.29 |
申请号 |
US20080318012 |
申请日期 |
2008.12.19 |
申请人 |
YU DACHUAN;ILLINDALA MAHESH SITARAM;ALKHOULI OSAMA MOHAMMAD;CATERPILLAR INC. |
发明人 |
YU DACHUAN;ILLINDALA MAHESH SITARAM;ALKHOULI OSAMA MOHAMMAD |
分类号 |
H02M3/335;H02H7/122 |
主分类号 |
H02M3/335 |
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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