Frequency-interleaved converter unit and control method
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HUZHOU ELECTRIC POWER SUPPLY CO OF STATE GRID ZHEJIANG ELECTRIC POWER CO LTD
- Publication Date
- 2021-09-07
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Abstract
Description
technical field
[0001] The invention relates to the technical field of power electronic conversion, in particular to a frequency interleaved converter unit and a control method. Background technique
[0002] Power electronics constructs signals from the on (1) and off (0) of power semiconductor devices, which can only be reflected in the form of square waves, so only high-frequency signals can be used to cut the desired signal according to the law. These high-frequency signals are carrier waves (usually triangle waves), and the desired signals are modulation waves, such as figure 1 As shown, the modulated wave takes a sine wave as an example. The actual output signal is actually a superposition of a high-frequency signal and a sine wave signal. These high-frequency signals determine the switching frequency of the power semiconductor device on and off, that is, the switching frequency. Therefore, under normal circumstances, the carrier signal used in modulation determines th...