发明申请
- 专利标题: ASYNCHRONOUS MACHINE WITH OPTIMIZED DISTRIBUTION OF ELECTRICAL LOSSES BETWEEN STATOR AND ROTOR
- 专利标题(中): 异步电机与定子和转子之间的电子故障优化分配
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申请号: US14650431申请日: 2013-10-15
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公开(公告)号: US20150311759A1公开(公告)日: 2015-10-29
- 发明人: Patrick Heuser , Miguel Ruiz De Larramendi , Mercedes Herranz Gracia
- 申请人: ROBERT BOSCH GMBH
- 申请人地址: DE Stuttgart
- 专利权人: Robert Bosch GmbH
- 当前专利权人: Robert Bosch GmbH
- 当前专利权人地址: DE Stuttgart
- 优先权: DE102012222616.8 20121210
- 国际申请: PCT/EP2013/071473 WO 20131015
- 主分类号: H02K3/28
- IPC分类号: H02K3/28 ; H02K3/12 ; H02K17/16
摘要:
The invention relates to an asynchronous machine (1) as can be used particularly in electric vehicles or hybrid vehicles. The asynchronous machine (1) has a rotor (5) and a stator (3). The asynchronous machine is designed and controlled in such a manner that it has a pole pair number p of p=3. Because of the reduced yoke saturation that can consequently be achieved, the stator yoke (9) can be designed with a lesser height hy1, such that a ratio of the outer rotor diameter D2a to the outer stator diameter D1a can assume values between 0.7 and 0.8. As a result, enlarged rotor teeth (19) and correspondingly enlarged rotor grooves (21) can be formed in the rotor (5), such that electrical losses in the material in the rotor grooves (21) acting as the rotor coil element (23) are smaller in comparison to conventional asynchronous machines. The electrical losses occurring to a greater extent in the stator (3) compensating for this lead to a lesser warming of the stator (3) than would be the case with the rotor (5) as the stator (3) can be cooled by simple means. Overall, a higher continuous torque can thus be achieved with the asynchronous machine (1) according to the invention.
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