A new design method for the clawpole transverse flux machine. Application to the machine no-load flux optimization. Part II: Optimization aspects

This paper addresses the difficulty of modeling and optimizing transverse flux machines (TFMs). 3D flux line patterns, complex leakage paths and saturation of the magnetic material significantly add to the complexity of building accurate magnetic models to optimize TFMs. In this paper, a new design method is presented and applied to maximize the no-load flux of a Clawpole TFM. An error compensation mechanism combined to an analytical reluctance model is proposed as a solution to overcome inherent inaccuracies of TFM analytical models in a design process. As a natural complement to a previous communication focused the model and the error compensation mechanism, this paper investigates the use of this design method in an optimization context.