The switched reluctance motor (SRM) is a type of reluctance motor, an electric motor that runs by reluctance torque. Unlike common DC motor types, power is delivered to windings in the stator (case) rather than the rotor. This greatly simplifies mechanical design as power does not have to be delivered to a moving part, but it complicates the electrical design as some sort of switching system needs to be used to deliver power to the different windings. With modern electronic devices this is not a problem, and the SRM is a popular design for modern motors. Its main drawback is torque ripple.
Read more about Switched Reluctance Motor: Operating Principle, Control, Power Circuitry
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