Energy Feedback Device Digital

With the development of some key technology such as theory of motor controlling, electric power and electronic device, pulse width modulating, The application of AC drive system becomes more and more widely. The matter of its energy utilization ratio receives people's more concerns too. To use the energy produced by braking, this paper designs a energy-feedback braking equipment.This paper has introduced key technology, such as the basic principle of the energy-feedback equipment and SPWM technology etc. To solve the shortcoming of those braking method in use, such as complicated circuit hardware, heavy maintain work, high costs low rate of energy callback, using the real-time processing ability and strong function of DSP chip, this paper designed a energy-feedback braking equipment. The core of this equipment is TMS320F2407 DSP of the TI company and the power component is IGBT. the circuit of hardware is simple, mainly include main circuit, the control circuit, control panel, etc. The software realizes various kinds of functions, Including the basic function of the energy-feedback device, assistant function such as protection and communication. In the end, emulator and experiment is made to prove the reliability of the hardware and the stability of the software. This paper also analyze the effect of dead time to the equipment.