| 摘要 |
PROBLEM TO BE SOLVED: To enable highly reliable and highly efficient low vibration noise in a brushless motor to be used for air conditioner. SOLUTION: Effects of magnetic flux of a stator 7 on a magnetic sensor 3 is eliminated and irregular pulses of magnetic sensor 3 are suppressed by setting the position of the magnetic sensor 3 so as to detect the position of rotor 6 of a brushless motor to the area where the magnetic flux density is low. Moreover, the magnetic sensor 3 can be set at a desired angle with respect to the slot of the stator 7, and the optimum power feeding switching timing can be set by providing the magnetic sensor 3 to the area at the inside of the stator 7, which does not interfere with the insulation layer of stator core. |
