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