Development of a Double-Side Transverse Flux Linear Motor for Direct Drive Applications

The transverse flux linear motor (TFLM) can achieve high force density at low speed. But the special structure also leads to low utilization of PM materials. In this paper, a novel double-side TFLM is proposed and investigated. The magnets can provide effective flux linkage both in positive and negative operating period. Firstly, the basic structure of the double-side TFLM and operating principle is introduced. Then, the reluctance network of the proposed motor is established based on the flux path, and the expression of thrust force is deduced. Moreover, the electromagnetic performance of the proposed motor is investigated. The results show that the proposed motor is suitable for direct-drive applications.