Altivar 900 variable-speed drives (VFDs) embed advanced algorithms to control electric motors and connected applications. A mechanical control algorithm has the objective to regulate motor speed to a setpoint by calculating a reference torque. The electric motor control algorithm has the objective to provide accurate and performant torque on the rotor shaft optimizing electrical energy. It has a freedom degree corresponding to motor magnetization. Adaptive cascade vector control (ACVC) is the patent awarded for the innovation around increasing motor control performance by means of accurate estimation of the magnetization saturation of the motor. ACVC is implemented in the full range of ATV900 and ATV340 VFDs.
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