Variable frequency drive (VFD)-BES
To use a rectifier, ac must be converted to dc or direct current. The rectifier energy is stored in an intermediate circuit, which maintains the voltage across the inverter. Capacitors in a DC circuit smooth the residual AC ripple and provide a constant DC voltage. The switching transistors of the inverter take this direct current and convert it into alternating current, which is then transmitted to the motor. A variable frequency drive can adjust the output frequency by rapidly switching between transistors coupled to a positive and negative DC bus. Burraq Engineering solutions provide the best online and Physical VFD Training in Lahore . Pulse width modulation allows the output voltage of the frequency converter to be adjusted by pulsing the DC voltage at a set frequency (PWM). Variable frequency drive (VFD) The parameters of each converter are changed by the use of control circuits. It comprises a microprocessor unit that controls the motor's speed, monitors the AC inverter...