Fault tolerance design-based high-power power electronic transformer
A technology of power electronics and fault-tolerant design, which is applied in the direction of converting DC power input to DC power output, converting AC power input to AC power output, and adjusting electrical variables. It can solve problems such as fault tolerance and reliability are not very ideal, and achieve Improve the electrical environment of the power grid, solve the voltage sag/swell, and suppress the effects of harmonics
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[0021] The present invention will be further described below in conjunction with the accompanying drawings.
[0022] Such as figure 1 Shown is a structural diagram of a high-power power electronic transformer based on fault-tolerant design. Its three-phase structure is the same and independent, connected in a three-phase star structure, and connected in parallel after using a three-phase four-wire system output; each A three-stage structure is adopted on a single phase, that is, a high-voltage input stage, an isolation stage and a low-voltage output stage.
[0023] The high-voltage input module and the corresponding isolation module form an input module, and more than one input module and one low-voltage output module are connected to each single phase of the power electronic transformer, and the primary side of the input module is a high-voltage input module A circuit composed of the primary side circuit of the corresponding isolation module, the secondary side of the input ...
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