What is an SR motor?

ePower Motors has over many years developed high knowledge and expertise within the SR motor, motor controller & software.

The concept of the Switched Reluctance Motor was established in 1838, but the motor could not realise its full potential until the modern era of power electronics and computer-aided electromagnetic design.

Since the mid-1960's the developments within these areas has given the SR motor a fresh start, and the improvements on powers MosFET and IGBTs in the 1990's have further pushed the development of Switched Reluctance drives.

The SR motor works with a magnetic field that goes through the irons core of the motor, which makes the Rotor iron poles rotate within the Stator poles and coils. The SR motor does not contain a permanent magnet or any other rare-earth materials, thereby not dependent upon single source supply.

ePower's SR motor technology includes both the SR motor, the motor controller and controller software (LabVIEW), which gives ePower an advantage and possibility to develop a specific SR motor dedicated to an application with superior and very competitive features and cost structure.

ePower provides an SR motor which is unique within SR motors, with competitive features compared to traditional motors on the market today and the characteristics it provides, as illustrated in Table 1.

The comparison between the traditional motor and SR motors on selected criteria shows that SR motors, in general, have higher utility than other traditional motors. However, ePower's SR motors have even greater utility compared to normal SR motors.
Traditional SR motor The "flux" goes through the center of the motor