Method for protection of a matrix converter against overvoltages, and an active overvoltage device
The present invention relates to a method for protecting a matrix converter having nine bidirectional power switches, which are arranged in a 3×3 switch matrix, against overvoltages, and to an active overvoltage protection device. A method and a device for protecting a matrix converter is disclosed....
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| Main Authors | , |
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| Format | Patent |
| Language | English |
| Published |
09.03.2004
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| Online Access | Get full text |
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| Summary: | The present invention relates to a method for protecting a matrix converter having nine bidirectional power switches, which are arranged in a 3×3 switch matrix, against overvoltages, and to an active overvoltage protection device.
A method and a device for protecting a matrix converter is disclosed. The matrix converter has nine bi-directional circuit-breakers which are arranged in a 3×3 switch matrix. A highest potential is detected from all input and/or output potentials or from all input potentials and at least one output potential. Bi-directional circuit-breakers of the matrix converter are controlled when a predetermined threshold value is exceeded. This arrangement protects the entire matrix converter from overvoltages. The converter can be produced easily and cost-effectively. |
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