Apparatus and method for detecting an inverter islanding operation
There is provided an inverter apparatus islanding operation detecting method capable of surely detecting an islanding operation with a simple construction. A distortion for causing a variation in an output frequency of an inverter apparatus in an islanding operation stage is applied to an inverter o...
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Main Authors | , , , |
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Format | Patent |
Language | English French German |
Published |
03.12.1997
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Edition | 6 |
Subjects | |
Online Access | Get full text |
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Summary: | There is provided an inverter apparatus islanding operation detecting method capable of surely detecting an islanding operation with a simple construction. A distortion for causing a variation in an output frequency of an inverter apparatus in an islanding operation stage is applied to an inverter output waveform. With this arrangement, even when the inverter apparatus is disconnected from an AC power system (16) in a state in which a power factor of a load impedance is proximate to one, a frequency variation is generated in an inverter output, thereby ensuring detection of the islanding operation. |
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Bibliography: | Application Number: EP19970108542 |