Passive and nondestructive clamping single-phase high-gain converter
A high-gain, converter technology, applied in the direction of conversion equipment without intermediate conversion to AC, can solve the problems of large voltage stress of the power switch tube, reduce the voltage stress of the power switch tube, and cannot achieve high-gain conversion, so as to reduce the voltage The effect of stress, easy control and simple structure
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Embodiment 1
[0020] see figure 1 , a passive lossless clamping single-phase high-gain converter, including a single-phase Boost circuit unit 1, a voltage doubler circuit unit 2 and an output circuit unit 3 connected in series in sequence, and the single-phase Boost circuit unit 1 includes a coupling Inductor first winding L 1 , the coupled inductor first winding L 1 The first terminal of is connected to the positive pole of the power supply Vin, and the first winding L 1 The second end of the power switch tube S is connected to the drain of the power switch S and the anode of the clamp diode Dc, the cathode of the clamp diode Dc is connected to the first end of the clamp capacitor Cc, the source of the power switch tube S and the anode of the clamp diode Dc are connected to each other. The negative pole of the power supply Vin is connected;
[0021] The voltage doubling circuit unit 2 includes a coupled inductor second winding L 2 , the coupled inductor second winding L 2 One end is c...
Embodiment 2
[0037] see figure 2 The difference between this embodiment and the first embodiment is that the second end of the clamping capacitor Cc is connected to the positive pole of the power supply Vin. All the other functions and structures are the same.
[0038] Embodiment two
[0039] see image 3 The difference between this embodiment and Embodiment 1 and Embodiment 2 lies in that the second end of the clamping capacitor Cc is connected to the first end of the output capacitor Co. All the other functions and structures are the same.
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