The energy feedback unit is a very important component of the frequency converter system. It uses the characteristics of motor motion inertial energy to achieve energy recovery and reuse. As the energy is gradually depleted, the efficiency of energy use is increasingly valued, and the application prospects of the energy feedback unit will be more and more broad.
Overview of Energy Feedback Units
Energy feedback unit refers to the device used in the frequency converter system to realize power generation and grid connection. When the motor is working, due to the presence of motor inertia, at the moment when the motor dynamic energy will disappear, the energy feedback unit can return the energy generated by the motor to the grid, thereby achieving energy recovery and utilization.
The working principle of the energy feedback unit
The principle of operation of the energy feedback unit is based on the motor's motion inertia. When the motor is running, the motor generates a certain amount of potential and kinetic energy due to the action of inertia. These energies need to be dissipated before the motor stops moving, but if this energy can be recovered and put into the grid, it can be achieved to recover and reuse the energy.
The core of the energy feedback unit is the frequency converter. When the motor is running, the frequency converter control system can instantly sense the motor's movement state. When the motor is at the end of the movement, the inertial energy generated is large, the frequency converter will automatically return electricity to the grid. The feedback path mainly includes: motor-signal acquisition board-inverter-frequency converter-grid.
Application of Energy Feedback Units
Energy feedback units are widely used, especially in fields such as gas power generation and wind power generation. Due to the large fluctuations in the rotational speed of the generator unit when generating power, a large slow return inertial energy will be generated when the motor stops operating. Energy feedback units can be used to recover these energies, thereby improving the energy utilization efficiency of the system.