Modular power unit and method suitable for four-quadrant cascade type frequency conversion
The invention provides a modular power unit and method suitable for four-quadrant cascade type frequency conversion. The modularized power unit is composed of a power unit module and a capacitor module. The power unit module comprises two small-size power modules, a power unit shell and a control ci...
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Main Authors | , , , , , , , , , , , , , |
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Format | Patent |
Language | Chinese English |
Published |
14.10.2022
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Subjects | |
Online Access | Get full text |
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Summary: | The invention provides a modular power unit and method suitable for four-quadrant cascade type frequency conversion. The modularized power unit is composed of a power unit module and a capacitor module. The power unit module comprises two small-size power modules, a power unit shell and a control circuit board metal cavity; the power unit main circuit adopts single-phase PWM rectification and single-phase H-bridge inversion; a four-quadrant high-voltage frequency conversion system transformer secondary winding adopting the modularized power unit is simple in structure, the design of a four-quadrant H-bridge cascade multi-level high-voltage frequency conversion system without a power unit input electric reactor is more efficiently achieved, and meanwhile rectification and inversion IGBT power modules are symmetrically arranged on two small-size power modules. The design complexity of the power unit is greatly reduced, and the modularization level of the power unit is improved; the modular power unit and the me |
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Bibliography: | Application Number: CN202210715609 |