Multi-bootstrap cascade DC-DC converter having two capacitance clamping positions for photovoltaic system
A DC-DC, capacitor clamping technology, applied in photovoltaic power generation, regulating electrical variables, control/regulating systems, etc., can solve the problems of high voltage gain, low efficiency, inability to achieve, etc., to improve boost performance, improve Efficiency, effect of avoiding circuit resonance problems
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[0025] The technical solution of the present invention will be further introduced below in combination with specific embodiments.
[0026] The first specific embodiment of the present invention discloses a multi-bootstrap cascaded DC-DC converter clamped by two capacitors for a photovoltaic system, such as figure 1 shown, including the input supply V in , input supply V in The positive connection of the inductance L 1 at one end, the inductance L 1 The other ends are connected to the freewheeling diode D 1 anode and freewheeling diode D 2 anode of the freewheeling diode D 1 The cathodes of the coupled inductors are respectively connected to the primary winding L of the coupled inductor 2 One end of the capacitor C 1 One end of the freewheeling diode D 5 The anode of the coupled inductor primary winding L 2 Connect the other end of the capacitor C 4 One end of the freewheeling diode D 2 The cathode and the drain of the switching tube S, the capacitor C 4 The other e...
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