A maximum efficiency tracking dc-dc converter applied to inductive power transmission system and its control method
An inductive power transmission, DC-DC technology, applied in the output power conversion device, the conversion of DC power input to DC power output, the conversion of AC power input to DC power output, etc., can solve the problem of limited adjustable range of equivalent impedance, Unable to achieve dynamic tracking, inapplicability and other problems, achieve high power levels, reduce voltage and current stress, and improve applicability
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[0027] Further describe the present invention below in conjunction with accompanying drawing:
[0028] Such as figure 1 , a maximum efficiency tracking DC-DC converter and its control technology applied in the inductive power transfer system. The main circuit topology is the main circuit of inductive power transfer and the main circuit of impedance matching. The former is mainly composed of loosely coupled transformers and L 1 、C 1 、C s and the coupler self-inductance L p , L s The LCL-S compensation topology composed of the switching tube Q 1 -Q 4 A full-bridge inverter circuit composed of a diode D 1 -D 4 The uncontrolled rectifier bridge and filter capacitor C f composition. Among them, the inverter circuit switch tube Q 1 and Q 2 , Q 3 , Q 4 Both are 180° complementary conduction, the duty cycle is fixed at 0.5, and the switching tube Q 1 and Q 2 Composed of the leading arm LegA and composed of Q 3 , Q 4 The phase angle between the formed lagging bridge ar...
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