High-voltage transformation ratio bidirectional DC converter and control method thereof
A bidirectional DC conversion and high voltage technology, which is applied in the direction of converting DC power input to DC power output, adjusting electrical variables, and controlling/regulating systems. problems such as increased stress
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[0014] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
[0015] figure 1 It is the circuit schematic diagram of the high voltage ratio bidirectional DC converter of the present invention, C fh is the high-voltage side filter capacitor, C fl is the low-voltage side filter capacitor, Q H1 , Q H2 , Q H3 , Q H4 , Q H5 , Q H6 , Q L1 , Q L2 with Q L3 for the switch tube, L 1 , L 2 with L3 As a filter inductor, the Y-shaped winding of the Y-Δ three-phase transformer is composed of A p phase winding, B p phase winding and C p Composed of phase windings, the Δ winding of the Y-Δ three-phase transformer is composed of a s phase winding, b s phase winding and c s Composed of phase windings, the input source of the high voltage side is the DC bus V H , the low-voltage side input source is the battery V L . filter capacitor C fh In parallel with the DC bus, th...
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