Single transplanted magnet steel permanent magnet synchronous motor
A technology of permanent magnet synchronous and single-planted magnetic steel, which is applied in the field of electric motors, can solve the problems of poor anti-demagnetization ability, increased cost, and increased amount of magnetic steel, and achieves obvious advantages in energy saving, self-starting, and high mechanical strength.
Inactive Publication Date: 2011-01-12
XUZHOU CURRENCY MAGNETOELECTRICITY
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Problems solved by technology
[0002] The permanent magnet synchronous motor has the characteristics of light weight, high performance, high efficiency and energy saving, and has a wide market space, but the number of permanent magnet synchronous motors in actual operation accounts for a small proportion
The existing permanent magnet rotor structure needs to implant magnets opposite to the adjacent poles under each pole, which increases the amount of magnets used and increases the cost. Moreover, the rotor has low mechanical strength and poor resistance to demagnetization, which affects the stability of operation. Sex and reliability, which directly limit the use and promotion
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[0012] A permanent magnet synchronous motor with single-plant magnetic steel, including a rotating shaft 1, a bearing 2 matched with the rotating shaft 1, an end cover 3, a stator core 5, and a rotor core 6 matched with the rotating shaft 1; it is characterized in that : There is a slot space 7 on the rotor core 6; permanent magnets of the same polarity are placed in the slot space 7; the number of the permanent magnets is equal to the number of pole pairs of the motor. The space angle between the slot spaces 7 is α=360 / p degrees, where p is the number of pole pairs of the motor. A rotor slot 13 is provided on the rotor core 6 ; aluminum and / or copper connected to the end ring 9 are cast into the rotor slot 13 . There is a magnetic bridge a between the slot space 7 and the rotor slot 13; the magnetic bridge a is between 1.5 and 2.0mm; the slot space 7 is a straight slot, an arc slot, a V-shaped slot, a U-shaped slot or a W shaped groove; the pole arc coefficient of the perman...
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The invention relates to a permanent magnetic synchronous motor of single magnetic steel, belonging to the technical field of motors. The motor comprises a rotation shaft (1), a bearing (2) which is matched with the rotation shaft (1), an end cover (3), a stator core (5) and a rotor core (6) which is matched with the rotation shaft (1); the motor is characterized in that the rotor core (6) is provided with a trough space (7) which is internally provided with permanent magnetic steels with the same polarity; the quantity of the permanent magnetic steels are identical to the pole pair number ofthe motor; the spatial angle between the trough spaces (7) is 360 / p degree; wherein, p is the pole pair number of the motor; the rotor core (6) is provided with a rotor trough (13) which is internally cast by aluminium and / or copper which are connected with an end ring (9). The permanent magnetic synchronous motor has high mechanical strength, stable and reliable running operation and obvious energy-saving advantage.
Description
technical field [0001] The invention belongs to the technical field of motors, in particular to a permanent magnet synchronous motor with single-planted magnets. Background technique [0002] Permanent magnet synchronous motors have the characteristics of light weight, high performance, high efficiency and energy saving, and have a wide market space, but the number of permanent magnet synchronous motors in actual operation accounts for a small proportion. The existing permanent magnet rotor structure needs to implant magnet steel with opposite polarity to the adjacent magnetic pole under each magnetic pole, which increases the amount of magnetic steel and increases the cost, and the rotor has low mechanical strength and poor anti-demagnetization ability, which affects the stability of operation Sex and reliability directly limit the use and promotion. Contents of the invention [0003] The invention aims to overcome the disadvantages of the prior art and provide a permane...
Claims
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IPC IPC(8): H02K21/12H02K1/27H02K21/14H02K9/06
Inventor 安跃军孙昌志
Owner XUZHOU CURRENCY MAGNETOELECTRICITY