LC series resonance high frequency chain matrix-type inverter topology and resonance modulation method thereof
A technology of series resonance and modulation method, applied in the direction of converting AC power input to AC power output, AC power input converting to DC power output, output power conversion device, etc., can solve the problem of adding controllable power tube control, clamping circuit Increase the cost, complex control methods, etc., to achieve the effect of improving circuit reliability and efficiency, avoiding voltage overshoot problems, and low modulation complexity
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[0024] The present invention will be further described below in conjunction with accompanying drawing:
[0025] The LC series resonant high-frequency chain matrix inverter topology of the present invention is composed of a full-bridge LC series resonant inverter, a high-frequency transformer T, a matrix converter, and a CL filter connected in sequence; the high-frequency inverter circuit in the front stage of the transformer is introduced LC series resonant tank, the output becomes current-dominated, and the DC input voltage U i Converted to the resonant current i p, coupled by a high-frequency transformer to the secondary side of the transformer, modulated by the matrix converter at the rear stage of the transformer, and filtered by a filter to output a low-frequency sinusoidal voltage U o .
[0026] The full-bridge LC series resonant inverter is powered by a DC input voltage U i , Controllable switch tube S 1 , Controllable switch tube S 2 , Controllable switch tube S ...
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