External rotor used for double-mechanical port electric motor
A technology with dual mechanical ports and external rotors, applied in the direction of electromechanical devices, electrical components, magnetic circuit rotating parts, etc., can solve problems such as increasing current, affecting practicality, weakening the total flux linkage of turns, and improving system efficiency Effect
Inactive Publication Date: 2011-06-15
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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Problems solved by technology
The motors in CN1929243, CN1738163 and CN1945939 provide two implementations of unified magnetic field and non-uniform magnetic field in its specific implementation, but the unified magnetic field motor in these invention patents has the same problem: apply demagnetization current in the stator winding to When the total flux linkage of its turns is weakened, the demagnetization magnetic field generated by it will also weaken the total flux linkage of the inner rotor turns. At this time, if the inner rotor still maintains the torque output, the current must be increased
The realization of this unified magnetic field not only increases the complexity of the control system, but also is not conducive to improving the efficiency of the motor itself, and it does not match the specific working conditions of this motor when it is used in vehicle driving, thus affecting its practicability
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[0018] figure 1 It is the outer rotor structure of the present invention. Such as figure 1 As shown, the outer rotor of the present invention includes an outer rotor core 2 , an outer rotor magnet 4 , a magnetic bridge 9 and a magnetic separator 10 . The magnetic steel 4 is embedded in the outer rotor core 2 . There are notches on the two planes where the outer rotor core 2 and the two ends of the magnetic steel 4 are in contact with each other in the radial direction, which are magnetic separators 10 . The elongated part between the outer rotor core 2 and the magnetic spacer 10 is the magnetic bridge 9 .
[0019] The specific implementation of the application of the outer rotor of the present invention to the motor with dual mechanical ports is as follows: figure 2 shown. figure 2 Shown is a motor with radial flux. The main structure is the stator core 1, the outer rotor core 2 and the inner rotor core 3 from the inside to the outside. A stator winding 5 is installed...
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An outer rotor applied to a double-mechanical port motor includes an outer rotor magnet core (2), an outer rotor alnico (4), a magnetic bridge (9) and magnetic isolators (10); the outer rotor alnico (4) is mounted on the outer rotor magnet core (2); the two planes of the inner and the outer sides of the outer rotor alnico (4) contacted with the outer rotor magnet core (2) are provided with slot openings which are the magnetic isolators (10); the magnetic bridge (9) is arranged between the outer rotor magnet host (2) and the magnetic isolators (10). The outer rotor alnico (4) composes a group of magnetic poles opposite to the first magnetic field and the second magnetic field of the double-mechanical port motor; the directions for the magnetic line of force generated by the outer rotor alnico (4) to enter the first air gap and the second air gap are opposite; the outer rotor alnico (4) is magnetized tangentially, and the length of the outer rotor alnico (4) along the magnetic flux direction of the air gap is larger than the length along the magnetizing direction. The invention has the advantages of improving the operating factors of demagnetizing current, simpler strucure, and higher system efficiency compared with the non-uniforemd double-mechanical port motor of a doulbe-layer alnico outer rotar structure.
Description
technical field [0001] The invention relates to an outer rotor structure, in particular to an outer rotor applied to a motor with double mechanical ports. Background technique [0002] A dual mechanical port motor is an electric motor with two mechanical ports, the main field of application is hybrid vehicle drive. One of the mechanical ports is connected to the engine and the other mechanical port is connected to the vehicle drive shaft. Because the two mechanical ports of this motor are independent, the road load changes of a hybrid vehicle equipped with this motor are not directly transmitted to the engine. By controlling the engine to always work in its high-efficiency zone, the efficiency of the entire power system is effectively improved and emissions are reduced, which is of great significance in both energy saving and environmental protection. [0003] Patents CN1929243, CN1738163, CN1945939 and CN1694339 all relate to this motor. Although these motors have differ...
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IPC IPC(8): H02K16/02H02K1/27
Inventor 陈静薇范涛温旭辉徐隆亚
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI