T-shaped three-level inverter and neutral-point balance control method therefor
A three-level inverter and midpoint technology, applied to electrical components, AC power input conversion to DC power output, output power conversion devices, etc., can solve midpoint voltage fluctuations, complex control process, and poor adjustment speed And other issues
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[0057] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:
[0058] Such as figure 1As shown, it is a schematic diagram of the application environment of the mid-point balance control method based on voltage differential prediction of the T-type three-level inverter of the present invention. The circuit structure of the non-isolated T-type three-level grid-connected inverter includes the positive pole of the DC voltage Udc connected to the positive pole of the capacitor Cp on the DC bus, the collector of the first switching tube Sa1, the collector of the second switching tube Sb1, the third The collector of the switching tube Scl; the negative pole of the DC voltage Udc is respectively connected with the negative pole of the capacitor Cn under the DC bus, the emitter of the fourth switching tube Sa4, the emitter of the fifth switching tube Sb4, and the emitter of the sixth switching tube Sc4; The negativ...
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