Proposing New Planar-Type Search Coil for Permanent Magnet Synchronous Motor: Design and Application for Position Estimation

Conventional position sensors for permanent magnet synchronous motor, such as optical encoder, resolver, or hall sensor, can get fault by the stress. The of motor sensor may cause serious accidents. Thus, to prevent damages failure, adding a redundancy wound search coil is recommendable. In this paper, new planar design that be used proposed. This based on flexible-printed circuit board converts airgap flux back-electromotive force signal. Unlike design, proposed advantageous manufacturing and slot-space preservation. Also, distant from main winding. As result, exposure electrical thermal stresses sensing decreased. research shows mathematical model planar-shaped design. addition, estimation algorithm shown. Finally, using presented.