Novel high-gain dual-input DC-DC converter
A DC-DC, dual-input technology, applied in the direction of conversion of DC power input to DC power output, high-efficiency power electronic conversion, output power conversion device, etc., can solve the problems of low energy utilization rate and many times of energy conversion, and achieve The effect of improving energy utilization, expanding the application range, and reducing the number of energy conversions
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[0045] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0046] Such as figure 1 As shown, a new type of high-gain dual-input DC-DC converter is composed of input unit A, step-up units B and C, and load unit D, and its internal connection relationship is:
[0047] The input unit consists of a basic Sepic circuit and a basic Cuk circuit, containing three inductors L 1 , L 3 , L 4 , four capacitors C 3 、C 5 、C 7 、C 8 , three power switches S 1 , S 2 , S 3 , four diodes D 1 、D 2 、D 3 、D 4 ; Its connection form is as follows: Diode D 1 The anode of the PV input is connected to the positive pole, and the cathode is connected to the inductor L 1 one end, and through the power switch S 2 Connected to the positive pole of the energy storage unit, the inductance L 1 The other end of the power switch S 1 Connect to the negative pole of the photovoltaic input, capacitor C 3 one end of the L 1 the other end...
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