Switched reluctance for high efficiency
Switched reluctance (SR) motors are used in CG’s market-leading drive system for rotary heat exchangers, first introduced in 1984. We hold several patents for the design, control and monitoring of SR motors.
Sensorless motor control
CG Drives & Automation has some of the strongest early patents for the control of switched reluctance motors. The technique has paved the way for our development of a drive system based on sensorless motor control. The rotor’s position is monitored by a control unit which regulates the SR motor’s torque by adjusting the current in the motor windings. Speed is regulated by changing the duration between commutations, which means that speed is controlled by frequency.