Rotor structure, permanent magnet assisted synchronous reluctance motor and electric vehicle
A technology of rotor structure and rotor body, applied in electric vehicles, synchronous motors with static armatures and rotating magnets, motors, etc., can solve problems such as low motor power
Active Publication Date: 2020-10-30
ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
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Problems solved by technology
[0003] The main purpose of the present invention is to provide a rotor structure, permanent magnet assisted synchronous reluctance motor and electric vehicle, to solve the problem of low motor power in the prior art
Method used
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[0030] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0031] combine Figure 1 to Figure 4 As shown, according to an embodiment of the present invention, a rotor structure is provided.
[0032] Specifically, the rotor structure includes a rotor body 10, which is provided with a permanent magnet slot group, and the permanent magnet slot group includes an outer permanent magnet slot 12, and the rotor body 10 is also provided with a third folding groove 23 and a fourth folding groove. Slot 24. Wherein, the third folded groove 23 communicates with the first end of the outer layer permanent magnet groove 12, the fourth folded groove 24 communicates with the second end of the outer layer permanent magnet groove 12, the geometry of the length direction...
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The invention provides a rotor structure, a permanent magnet assisted synchronous reluctance motor and an electric vehicle. The rotor structure includes a rotor body, and a permanent magnet slot group is provided on the rotor body. The permanent magnet slot group includes an outer permanent magnet slot, and the rotor body is also provided with There is a third folding groove and a fourth folding groove. The geometric center line of the length direction of the third fold groove and the geometric center line of the length direction of the first end of the outer layer permanent magnet groove have a third angle, and the geometric center line of the length direction of the fourth fold groove and the outer layer permanent magnet The geometric center line of the length direction of the second end of the slot has a fourth included angle; the extension line of the side wall of the third folded slot intersects with the outer edge of the rotor body at the first point, and the extension line of the side wall of the fourth folded slot intersects with the outer edge of the rotor body. The outer edge of the rotor body intersects at the second point, and the arc of the line connecting the first point and the second point is A1, wherein, A1>0.63×360° / p. By setting the relationship between the angle between the folding grooves and the number of poles P of the rotor structure, the direction of the magnetic force lines is optimized, and the output power of the permanent magnet torque is improved.
Description
technical field [0001] The invention relates to the technical field of motor equipment, in particular to a rotor structure, a permanent magnet assisted synchronous reluctance motor and an electric vehicle. Background technique [0002] The torque component of the permanent magnet synchronous reluctance motor includes permanent magnet torque and reluctance torque. Affected by the reluctance torque component, the rotor structure has a great influence on the torque ripple. Therefore, the optimization of torque ripple has always been one of the research and development priorities of this motor. The torque ripple level of existing permanent magnet reluctance motors is still low, which affects the power of the motor. Contents of the invention [0003] The main purpose of the present invention is to provide a rotor structure, a permanent magnet assisted synchronous reluctance motor and an electric vehicle, so as to solve the problem of low motor power in the prior art. [0004]...
Claims
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IPC IPC(8): H02K1/27H02K29/03
CPCH02K1/2766H02K29/03H02K2213/03Y02T10/64H02K1/2773H02K21/14B60K1/00
Inventor 黄辉胡余生陈彬童童肖勇卢素华
Owner ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION