CN209184457U - A kind of high performance fractional-slot synchronous magnetic resistance motor - Google Patents
A kind of high performance fractional-slot synchronous magnetic resistance motor Download PDFInfo
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- CN209184457U CN209184457U CN201821552931.2U CN201821552931U CN209184457U CN 209184457 U CN209184457 U CN 209184457U CN 201821552931 U CN201821552931 U CN 201821552931U CN 209184457 U CN209184457 U CN 209184457U
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Abstract
A kind of high performance fractional-slot synchronous magnetic resistance motor of the utility model, motor case both ends are equipped with drive end bearing bracket and rear end cap, rotor core is equipped on the motor shaft, the rotor core is connect by bearing with drive end bearing bracket and rear end cap, and winding is embedded on the stator core, and the MgO-ZrO_2 brick is q, the q is score, and each pair of pole slot number is odd number, the winding is short-chord winding.The fractional-slot synchronous magnetic resistance motor of the utility model, is designed using fractional-slot, and each pair of pole slot number is odd number, magnetomotive force odd harmonics are reduced, the span that torque arteries and veins reduces winding is reduced, reduces the tip lengths of winding, the loss for reducing winding improves the efficiency and power factor of motor.
Description
Technical field
The utility model relates to synchronous magnetic resistance motors, and in particular to a kind of high performance fractional-slot synchronous magnetic resistance motor.
Background technique
Existing synchronous magnetic resistance motor mostly uses the multi-slot stator Distributed Winding similar to asynchronous machine, for the side of processing
Just, the asynchronous machine stator of standard is directly used for synchronous magnetic resistance motor by some.And the stator winding of asynchronous machine is integer slot
Distributed Winding, MgO-ZrO_2 brick are integer, i.e. q=1,2,3 ..., such as slot number is with being combined into 4 pole, 24 slot, 4 pole, 36 slot etc..But
Integer slot winding pole span is larger, and winding is long away from winding, and coil spread is big, and end is long, and the copper loss of end is bigger, is unfavorable for electricity
The promotion of engine efficiency.Since synchronous magnetic resistance motor mainly utilizes motor D, Q axle inductance difference to generate torque, to slot on rotor, it is convex
For polar effect than stronger, torque pulsation is bigger.In order to reduce torque pulsation, traditional synchronous magnetic resistance motor cooperates in slot number to be selected
It selects main pass through and selects biggish number of stator slots, the magnetomotive force of stator is made to tend to Sine distribution.According to Electrical Motor principle, integer
Slot Distributed Winding stator magnetomotive force has contained only odd harmonics, overtone order are as follows:
Wherein: Ns: number of stator slots, p: rotor number of poles
It selects biggish slot number that magnetomotive force odd harmonics number can be improved, improves the number of torque pulsation harmonic wave, drop
The amplitude of low torque ripple.But the size due to being limited to stator, slot number selection is limited, especially some low-power machines,
Motor volume is small, and number of stator slots is also fewer, it is difficult to effectively reduce torque pulsation.
Summary of the invention
The utility model is to overcome the shortcomings of the prior art, provides a this machine winding coefficients comparison height, around
Group utilization rate is higher, and is short distance winding, and coil spread is small, and end is short, and end wear is smaller, and efficiency, power factor are higher, produces
The raw lesser synchronous magnetic resistance motor of torque pulsation Amplitude Ration.
In order to solve the above technical problems, a kind of high performance fractional-slot synchronous magnetic resistance motor of the utility model, motor machine
Shell both ends are equipped with drive end bearing bracket and rear end cap, are equipped with rotor core on the motor shaft, the rotor core by bearing with
Drive end bearing bracket is connected with rear end cap, and winding is embedded on the stator core, and the MgO-ZrO_2 brick is q, and the q is score, and,
Each pair of pole slot number is odd number, and the winding is short-chord winding.
Preferably, the motor shaft end installs fan blade.
Preferably, fan housing is fixed on the rear end cap for protecting fan blade.
Compared with prior art, the utility model has the beneficial effects that the fractional-slot synchronous magnetic resistance motor of the utility model,
It is designed using fractional-slot, and each pair of pole slot number is odd number, reduces magnetomotive force odd harmonics, reduces torque arteries and veins and reduce winding
Span, reduce the tip lengths of winding, reduce the loss of winding, improve the efficiency and power factor of motor.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of embodiment 1；
Fig. 2 is 4 pole, 24 slot synchronous magnetic resistance motor mmf harmonics distribution map；
Fig. 3 is the motor mmf harmonics distribution map of embodiment 1；
Fig. 4 is 4 pole, 24 slot synchronous magnetic resistance motor torque curve；
Fig. 5 is the synchronous magnetic resistance motor torque curve of embodiment 1；
Fig. 6 is 24 slot synchronous magnetic resistance motor efficiency comparative of the pole of embodiment 1 and 4；
Fig. 7 is the comparison of 24 slot synchronous magnetic resistance motor power factor of the pole of embodiment 1 and 4.
Specific embodiment
With reference to the accompanying drawings and examples, the utility model is further elaborated:
Embodiment 1
As shown in Figure 1, a kind of high performance fractional-slot synchronous magnetic resistance motor of the utility model, including motor case, institute
It states 4 both ends of motor case and is equipped with drive end bearing bracket 2 and rear end cap 8；Be equipped with rotor core 6 on motor shaft 1, and by bearing 3 with
Front and rear cover connection；Winding 7 is embedded on stator core 5, the MgO-ZrO_2 brick is q, and the q is score, i.e., the described rotor
The slot number of the number of poles of iron core 6 and stator core 5 is that fractional-slot cooperates, and each pair of pole slot number is odd number, i.e. q=1.5,2.5,
3.5….Synchronous magnetic resistance motor in the present embodiment selects 4 pole, 18 slot, and winding 7 is fractional-slot winding, is designed using fractional-slot, and
Each pair of pole slot number is odd number.
In the utility model, the MgO-ZrO_2 brick of synchronous magnetic resistance motor is score, and each pair of pole slot number is odd number (i.e. q
=1.5,2.5,3.5 ...), such as 4 pole, 18 slot.This machine winding coefficients comparison is high, and winding utilization is higher, and for short pitch around
Group, coil spread is small, and end is short, and end wear is smaller, and efficiency, power factor are higher, as shown in Figure 6,7.The program it is each pair of
Pole slot number isOdd number, mmf harmonics number areOnly k be even number be just be odd-times
Harmonic wave, thus the torque pulsation amplitude com parison generated is small.As Figure 2-3,4 pole, the 18 slot motor and 4 pole, 24 slot of the present embodiment
Motor is compared, and odd harmonics want small, and the torque pulsation of generation wants small.
In the present embodiment, fan blade 9 is installed in 1 end of motor shaft, and fan housing 8 is fixed on the rear end cap 8 for protecting wind
Leaf 9, in the present embodiment, the stator core 5 is inside casing 4, and interference fit is connected to inside the casing 4, the wind
Leaf 9 is mounted in the end of motor shaft 1, and motor shaft 1 is followed to rotate, and plays the role of enhancing heat dissipation, and fan housing 10 is fixed on rear end cap 8
On, protect fan blade 9.
Finally it should be noted that listed above is only specific embodiment of the utility model.Obviously, this is practical new
Type is not limited to above embodiments, can also there is many variations.Those skilled in the art can be from disclosed by the utility model
All deformations for directly exporting or associating in content, are considered as the protection scope of the utility model.
Claims (3)
1. a kind of high performance fractional-slot synchronous magnetic resistance motor is equipped with motor case, motor shaft, rotor core and stator core,
The motor case both ends are equipped with drive end bearing bracket and rear end cap, and rotor core, the rotor core are equipped on the motor shaft
It is connect by bearing with drive end bearing bracket and rear end cap, winding is embedded on the stator core, it is characterised in that: MgO-ZrO_2 brick is
Q, the q are score, and, each pair of pole slot number is odd number, and the winding is short-chord winding.
2. high performance fractional-slot synchronous magnetic resistance motor as described in claim 1, it is characterised in that: the motor shaft end peace
Fill fan blade.
3. high performance fractional-slot synchronous magnetic resistance motor as claimed in claim 1 or 2, it is characterised in that: on the rear end cap
Fixed fan housing is for protecting fan blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821552931.2U CN209184457U (en) | 2018-09-21 | 2018-09-21 | A kind of high performance fractional-slot synchronous magnetic resistance motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821552931.2U CN209184457U (en) | 2018-09-21 | 2018-09-21 | A kind of high performance fractional-slot synchronous magnetic resistance motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209184457U true CN209184457U (en) | 2019-07-30 |
Family
ID=67360148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821552931.2U Active CN209184457U (en) | 2018-09-21 | 2018-09-21 | A kind of high performance fractional-slot synchronous magnetic resistance motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209184457U (en) |
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2018
- 2018-09-21 CN CN201821552931.2U patent/CN209184457U/en active Active
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