Magnetic coupling resonant-type wireless electric energy transmission energy active injection emission device

The invention discloses a magnetic coupling resonant-type wireless electric energy transmission energy active injection emission device. The energy active injection emission device comprises a coupling inductor, two clamping diodes, a freewheeling diode, a power switch tube, a buffer capacitor, a resonant capacitor and an emission coil. The device can be divided to form three main working modes offront-end energy shaping, buffer-end energy injection and emission-end free resonance; a front end employs the coupling inductor to store energy, a controllable current source is obtained, and the stored energy can be increased by two times within each switch period compared with a single inductor; and a buffer end employs the buffer capacitor to collect injected energy, and meanwhile, a condition is also provided for zero-voltage conduction and zero-voltage cutoff of the power switch tube. Free resonance of the emission end, energy shaping of the front end and energy injection are dependentto each other with a part