How to Select the Right VFD Inverter or AC Motor Drive
The choice of the right AC motor drive (VFD) for the application is very important and has great influence on its lifetime. If the capacity of AC motor drive is too large, it cannot offer complete protection to the motor and motor maybe damaged. If the capacity of AC motor drive is too small, it cannot offer the required performance and the AC motor drive maybe damaged due to overloading. But by simply selecting the AC motor drive of the same capacity as the motor, user application requirements cannot be met completely. Therefore, a designer should consider all the conditions, including load type, load speed, load characteristic, operation method, rated output, rated speed, power and the change of load capacity . The following table lists the factors you need to consider, depending on your requirements. Selection Note for VFD Why to use Choke for VFD? When the AC Motor Drive (VFD) is connected directly to a large-capacity power transformer (600kVA or above) or when a phase lead cap...
