Permanent magnetic push-pull brushless motor

A brushless motor, permanent magnet technology, applied in electromechanical devices, electrical components, electric components, etc., can solve problems such as low overload capacity and efficiency, low power density and efficiency, and difficult maintenance.

Inactive Publication Date: 2009-08-05
王铂仕
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example: Although the AC asynchronous motor has the advantages of simple structure, reliable operation, long life, low cost and easy maintenance, compared with the DC motor, it has poor speed regulation performance, small starting torque, low overload capacity and efficiency, and its The generation of the rotating magnetic field needs to absorb reactive power from the grid, so the power factor is low, and a large amount of electric energy is virtually lost
Although synchronous motors have high working efficiency, low noise, and small torque fluctuations, they are difficult to start and prone to out-of-step and stalled problems.
Switched reluctance motors have simple structure, reliable operation, good starting performance, and good speed regulation performance, but have the defects of large torque ripple, high noise, and low power density and effici

Method used

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  • Permanent magnetic push-pull brushless motor
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  • Permanent magnetic push-pull brushless motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Embodiment 1: As shown in Figure 11b1, it is "two pairs" 'Shaped axially magnetized rotor with two pairs of permanent magnets' 'Shaped commutation stator axial magnetic pole' motor adopts the "single-phase to two-phase DC commutation circuit" shown in Figure 13a1, and the signal control circuit is collected by two sensors (unipolar or bipolar). When the motor is not started, since the stator coil core is attracted by the permanent magnet of the rotor, one of the sensors H1 and H2 is always turned to align with the magnetic pole of the rotor S. Therefore, as shown in Figure 11b1 and Figure 13a1, when the sensor H2 senses When the rotor magnetic pole is S2, a positive signal is output, VT3 and VT4 are turned on, B winding is energized, the stator magnetic poles BN1, BN2 are repelled by the rotor magnetic poles N1, N2, and the stator magnetic poles BS①, BS② are respectively repelled by the rotor magnetic poles S②, S①, almost at the same time BS① and BS② attract N② and N...

Embodiment 2

[0053] Embodiment 2: As shown in Figure 11b4, it is "two pairs" 'Shaped rotor permanent magnet configuration two pairs' ’-shaped commutated stator radial pole” motor, the end of the stator coil close to the casing adopts “ "shaped yoke, which extends the magnetic circuit axially, and the same end of the corresponding rotor adopts a fan-shaped yoke, which extends the yoke radially. The motor adopts the "single-phase to two-phase DC commutation circuit" shown in Figure 13a3 ", use a bipolar sensor to control the circuit, the switch is a pair of NPN and PNP transistors. When H senses the rotor magnetic pole S1, it outputs a positive signal, VT1 is turned on, the stator A winding is energized, and the rotor rotates 90° to the right; When H senses the rotor magnetic pole N2, it outputs a negative signal, then VT1 is cut off, and at the same time, VT2 is turned on because of the negative electric signal induced by the control pole, the stator B winding is energized, and the roto...

Embodiment 3

[0054] Embodiment three: As shown in Figure 11c1, it is "two pairs" 'Shaped rotor with three pairs of permanent magnets' The motor with 'shaped commutation stator radial magnetic pole' adopts the "single-phase to three-phase DC commutation circuit" shown in Figure 13a6, and uses three unipolar sensors to control the circuit. See the figure, the sensor H2 senses the rotor magnetic pole At S2, a positive signal is output, VT3 and VT4 are turned on, the B winding is energized, and the rotor rotates 60° to the right; then, the sensor H2 cannot sense the rotor magnetic pole, the output signal stops, VT3 and VT4 are cut off, the B winding is powered off, and the sensor H3 senses the rotor magnetic pole S2, outputs a positive signal, VT5 and VT6 are turned on, the C winding is energized, and the rotor rotates 60° to the right; then the sensor H3 cannot sense the rotor magnetic pole, the output signal stops, VT5 and VT6 are cut off, and the C winding Power off, at the same time the...

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PUM

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Abstract

The invention provides an energy-saving effective permanent magnetic brushless rotation motor which starts and runs stably and has low cost. The motor owns two air gap magnetic fields at the magnetic poles of two ends; the deformed rotor permanent magnet or stator electromagnet leads the rotor magnetic pole (or stator magnetic pole) to be staggered by a certain of pole distance at the air gap magnetic fields of two ends; furthermore, the air gap magnetic field at one end of the motor is led to be less than the air gap magnetic field at the other end by technical means, thus leading the motor to keep directional rotation without a starting device. The rotor magnetic poles are intermittently arranged in pairs according to N, S and the like. The stator can be a conversion-typed stator and a commutation-typed stator; all coils at one end of the conversion-typed stator have the same polarity (N-pole or S-pole; the polarity of the coils at the other end are all S-pole or N-pole); the polarity of the magnetic pole of the commutation-typed stator coil is intermittently arranged in pairs according to N, S and the like; and the magnetic pole of the alternating current commutation-typed stator is intermittently arranged in pairs according to N, N, S, S and the like. The quantity of the rotor magnetic poles and the stator magnetic poles is configured according to the proportion of 1:1 or 1:2 or 2:3.

Description

technical field [0001] The invention relates to a permanent magnet brushless rotating electrical machine, which can be used not only as a generator but also as a motor. Background technique [0002] A rotating electrical machine is an electromechanical energy conversion device manufactured based on the principles of magnetic energy generating electricity, electric energy generating magnetism, and the principle that magnetic poles with the same name repel each other and magnetic poles with different names attract each other. There are many types of modern motor products and are widely used, but there are more or less defects in the existing motors. For example: Although the AC asynchronous motor has the advantages of simple structure, reliable operation, long life, low cost and easy maintenance, compared with the DC motor, it has poor speed regulation performance, small starting torque, low overload capacity and efficiency, and its The generation of the rotating magnetic fie...

Claims

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Application Information

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IPC IPC(8): H02K16/00H02K29/08H02K1/27H02K3/28H02K11/00H02K9/04H02K57/00H02K11/21
Inventor 王铂仕
Owner 王铂仕
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