Resource-Saving Circulating Pump on basis of an Integrated Synchronous-Reluctance Drive System

The use of resource critical materials such as rare earth magnets in electrical machines has a negative impact on resource efficiency and production costs. Strict EU efficiency standards have led to the use of rare earth magnets in rotors in modern circulating pumps and thus represents the state of the art. This paper presents a resource saving design for circulating pumps. The combination of a synchronous reluctance motor with integrated ferrite magnets in the flux barriers of the rotor and a new thin-walled can provide a good basis for improving resource efficiency and power density.