The Variable frequency drives (VFD) motor control

•  Start : The frequency of the Variable frequency drives (VFD) with the starting frequency. Motor to supply torque. The Variable frequency drives (VFD) will gradually increase the frequency up. the upper torque of the motor load torque motor began to rotate.

• Speed ​​and engine speed constant : when the starter motor and frequency Variable frequency drives (VFD) and also the output can gradually increase till the specified frequency. the rise in frequency is that the time to accelerate when the output frequency is equal to the specified frequency. Acceleration is complete. Variable frequency drives (VFD) enters the amount of operation. With a continuing velocity.

• To reduce speed: To do this, set the frequency to lower frequency output. Variable frequency drives (VFD) are less frequent from time to time to reduce speed to be set. At the lower frequencies. The motor speed is greater than the frequency output of the Variable frequency drives (VFD). Motor is running. The generator manufacturer. Power to the Variable frequency drives (VFD). (Regeneration) and also the voltage (voltage across the condenser) were increased. Thus, the Variable frequency drives (VFD) could be a circuit that receives energy from the regeneration, which can cause the brake motor. this is often referred to as a cycle. Circuit brake energy recovery. during the slow work of this nature repeatedly, if the energy is less. (Torque needed to reduce Speed ​​is small) rate of the brake circuit will be low. typically it doesn't work at it. Break this cycle usage. Designed to be thought-about in terms of cooling at 2-3% as long as the brakes are used frequently. Or use the brakes too long. can cause a cooling of the resistor and also the device acts as a switch Chss degeneration.
• Stop: Inverter to reduce the frequency down to a certain extent. And will produce power to the motor to operate the brakes. The motor is braking, with direct light.