Advantages and Disadvantages of VFD

Advantages of VFD

• Variable speed continuous operation over a wide range is possible

• Energy-saving possibility exists

• Brush, slip rings and so on, used in induction motor are not required

• Soft start and soft stop are enabled, extending the motor life

• Settings for acceleration timing and deceleration timing can be adjusted

• Starting current can be reduced

Disadvantages of VFD

• Harmonic protection measures are necessary since high frequency current is generated

• Generation of leakage current and noise due to high frequencies need to be restricted

• Noise prevention for other equipment (especially measuring instruments) is necessary