Parallel type energy feedback elevator system

The present invention discloses a parallel type energy feedback elevator system comprising a variable frequency driving main loop of an elevator, an energy feedback device and a controller, wherein the variable frequency driving main loop consists of a reactor, an uncontrollable rectifier bridge module, a second direct current bus capacitor and an inverting power module; the energy feedback device consists of a boosting and filtering device, a PWM rectifier module, a first direct current bus capacitor and a power diode module; the input end of a three-phase power supply is provided with two first current sensors; a three-phase input power end of a motor is provided with two second current sensors which are used for providing current feedback signals for the controller respectively; the controller is used for providing PWM control signals for the inverting power module and the PWM rectifier module and directly controlling the on and the off of a switch thereof; and the power diode module consists of two power