151. Design and testing of a new linear topology for electric machines
- Author
-
Mario Mezzarobba, Alberto Tessarolo, IEEE, Mezzarobba, Mario, and Tessarolo, Alberto
- Subjects
Electric motor ,Engineering ,business.product_category ,linear motor ,Stator ,02 engineering and technology ,01 natural sciences ,Wound rotor motor ,law.invention ,law ,0103 physical sciences ,0202 electrical engineering, electronic engineering, information engineering ,wind generator ,outer permanent-magnet rotor ,rotating electrical machine ,track motor ,010302 applied physics ,Electric machine ,business.industry ,Squirrel-cage rotor ,020208 electrical & electronic engineering ,Electrical engineering ,Linear motor ,Linear motion ,business ,Linear topology - Abstract
A new linear topology is proposed in this paper for rotating electric machines. The design presented consists of an outer permanent-magnet rotor featuring the same structure as a flexible chain or track made of a sequence of ferromagnetic links connected together by hinges. Toothed wheels are used to convert the linear motion of the track-like rotor into a rotary torque to be transferred to the shaft. The stator portion is the same as for a double-sided linear electric machine. The proposed linear topology makes the electric machine suitable for installation in long thin compartments. A perspective application can be envisioned to direct drive wind generators: the linear machine topology makes the generator suitable for installation inside the wind tower, while conventional cylindrical generators need to be fit into the nacelle. The proposed design has been investigated by finite element analysis simulations and has been implemented into a technology demonstrator for experimental validation.
- Published
- 2016