A half-wave cyclo-converter system and a method of controlling the same
By using a half-wave frequency converter system, a three-phase series half-wave commutator converter topology and frequency conversion module are adopted. Combined with voltage outer loop, current inner loop and voltage equalization control, the problems of large number of sub-modules and large capacitor voltage fluctuation in high-capacity, long-distance power transmission of frequency-division transmission system are solved, and the system stability and high-efficiency power transmission are achieved.
CN122246833APending Publication Date: 2026-06-19ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY
- Filing Date
- 2026-02-11
- Publication Date
- 2026-06-19
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Figure CN122246833A_ABST
Abstract
This invention pertains to the field of power and discloses a half-wave frequency converter system and its control method, comprising: a generator-side converter, whose input is connected to the generator's power frequency side and its output is connected to the low-frequency side, for converting power frequency AC to low-frequency AC; the generator-side converter adopts a three-phase series half-wave commutator converter topology, including three single-phase converters connected in series at the ports to construct a high-voltage common DC bus; a grid-side converter, whose input is connected to the low-frequency side and its output is connected to the grid's power frequency side, for converting low-frequency AC to power frequency AC; a low-frequency transmission line connecting the generator-side converter and the grid-side converter for transmitting low-frequency power; and a control unit connected to both the generator-side converter and the grid-side converter for controlling the system's power balance and voltage stability.
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