Abstract: Disclosed herein is a structure for linear and rotary electric machines. The present invention provides a modular mover structure which includes coils that have an electrical phase difference of 180°, so that the path of magnetic flux is shortened, thus reducing the size of the machine and mitigating the back-EMF unbalance. The modular mover structure can be modified into various shapes. For example, when a skew structure is applied to a mover or stator iron core, the force ripples in an electric machine can be reduced. In addition, when a hinge structure is applied to a modular mover iron core, the mover can move in a linear and curved manner. The structure of the present invention can be applied to a rotary electric machine. In this case, because the number of poles is easily increased, a low speed high torque direct drive type rotary electric machine is realized.
Type:
Grant
Filed:
April 13, 2010
Date of Patent:
November 26, 2013
Assignee:
Korea Electrotechnology Research Institute
Inventors:
Shi Uk Chung, Do Hyun Kang, Byung Chul Woo, Ji Won Kim, Ji Young Lee, Seung Ryul Moon