Double step-down inverter
A lifting type and inverter technology, applied in the direction of converting AC power input to DC power output, output power conversion devices, electrical components, etc., can solve the problem of increasing the volume and weight of the whole machine, reducing power conversion efficiency, and increasing system complexity In order to achieve the effect of overcoming voltage distortion, reducing the loss of filter components, and uncomplicated circuit structure
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[0017] As shown in Figure 1, the dual-boost-boost inverter of this embodiment includes a capacitor voltage divider circuit 1, a first boost-boost voltage circuit 2 and a second voltage-boost circuit 4, wherein the capacitor voltage divider circuit 1 consists of two The first capacitor C1 and the second capacitor C2 are connected in series, the series connection point of the first capacitor C1 and the second capacitor C2 is grounded, the other end of the first capacitor C1 is connected to the positive pole of the external power supply, and the other end of the second capacitor C2 is connected to the external power supply in the first buck-boost circuit 2, the anode of the first power switch tube S1 is connected to the positive pole of the external power supply, the cathode of the first power switch tube S1 is connected to the cathode of the third power switch tube S3, and the third power switch tube The anode of S3 is connected to the cathode of the first power diode D1, one end...
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