Single-stage three-phase cascade voltage-type quasi-impedance source inverter with large step-up ratio
A technology of quasi-impedance source and three-phase inverter bridge, which is applied in the direction of electrical components, AC power input conversion to DC power output, and output power conversion devices. The pressure ratio is not large enough to achieve the effect of large boost ratio, low cost and high reliability
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[0025] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0026] Single-stage three-phase large step-up ratio cascaded voltage-type quasi-impedance source inverter is composed of input DC power supply, large step-up ratio impedance network, three-phase inverter bridge, three-phase filter, three-phase AC load or three-phase The AC power grid is sequentially cascaded; the impedance network with a large boost ratio is formed by the energy storage inductor L 0 It is composed of n identical SLCC-type two-port impedance network units cascaded in series, where n is a natural number greater than 1; each SLCC-type two-port impedance network unit is composed of a power diode S j , an energy storage inductor L j , two storage capacitors C j and C j ′ constituted, the power diode S j The cathode and energy storage inductance L j One end of the energy storage capacitor C j The positive term...
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Abstract
Description
Claims
Application Information
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