ROTARY ELECTRIC MACHINE

• Main Authors: NAKAMACHI KOJI, SUZUKI TAKUMI
• Format: Patent
• Language: English; Japanese
• Published: 21.12.2015
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERATION

PROBLEM TO BE SOLVED: To provide a rotary electric machine having a multi-separate core, the rotary electric machine being able to inhibit occurrence of cogging torque resulting from a variation in magnetic resistance between separate cores.SOLUTION: A rotary electric machine comprises: a yoke housing in which a large number of magnets are attached to the inner periphery thereof; an armature core disposed in the yoke housing and composed by connecting in a circumferential direction a large number of separate cores having teeth parts projecting radially outward from the yoke parts thereof; and a fixed member fitted inside the yoke parts of the connected separate cores. A plurality of non-contact parts 11 are circumferentially provided at equal intervals between the fixed member 9 and the respective yoke parts 5 of the separate cores 4. The number of the non-contact parts 11 is made different from the divider of the number of the poles of the magnets 2 of the yoke housing. 【課題】多分割コアを備えた回転電機において、分割コア間の磁気抵抗ばらつきによるコギングトルクの発生を抑制し得る回転電機を提供する。【解決手段】内周面に多数のマグネットを取着したヨークハウジングと、ヨークハウジング内に配設され、ヨーク部から径方向外側に突出するティース部を備えた分割コアを、周方向に多数連結して構成される電機子コアと、連結された分割コアのヨーク部の内側に嵌入される固定部材とを備えた回転電機において、固定部材９と分割コア４の各ヨーク部５との間には、複数の非接触部１１を周方向に等間隔に設けるとともに、非接触部１１の数は、ヨークハウジングのマグネット２の極数の約数とは異なる数とした。【選択図】図１