CN101562361A - Single-phase multifunctional rare-earth permanent magnet generator - Google Patents
Single-phase multifunctional rare-earth permanent magnet generator Download PDFInfo
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- CN101562361A CN101562361A CNA2009101117469A CN200910111746A CN101562361A CN 101562361 A CN101562361 A CN 101562361A CN A2009101117469 A CNA2009101117469 A CN A2009101117469A CN 200910111746 A CN200910111746 A CN 200910111746A CN 101562361 A CN101562361 A CN 101562361A
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- permanent magnet
- armature winding
- earth permanent
- stator
- phase multifunctional
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Abstract
The invention relates to a single-phase multifunctional rare-earth permanent magnet generator, mainly consisting of a shell, a stator, a rotor, an inverter and a control system. The stator comprises a stator iron core and an armature winding; the stator iron core is repeatedly pressed into a chute by stator punching, and the armature winding adopts concentric windings with different turns; the rotator consists of a rotating shaft, a cylindrical magnetic-permeability yoke and paired tile shape magnetic steels which respectively fix N pole and S pole respectively on the excircle of the magnetic yoke; and the control system consists of two circuits. The single-phase multifunctional rare-earth permanent magnet generator not only has the characters of small volume, light weight, high efficiency, simple structure and reliable operation, simultaneously overcomes the defects that the permanent magnet is difficult to adjust magnetic field to control voltage from the outside so as to cause that the voltage stability is poor and the waveform distortion factor is large, also can automatically switch to a first circuit of the control system for supplying power continuously when the inverter fails, realizes multifunctional and continuous power supply with more reliability and has outstanding practical value.
Description
Technical field:
The present invention relates to a kind of rare earth permanent-magnetic generator, specifically a kind of single-phase multifunctional rare-earth permanent magnet generator belongs to machine field.
Background technology:
Existing rare earth permanent-magnetic generator is to be the magnetic source of permanent magnet as generator with the rare earth, replaces the field coil of electric excitation generator, can make brushless generator, has cancelled slip ring, brushgear and electric capacitor, electronic devices and components etc.Therefore having advantages such as volume is little, in light weight, efficient is high, simple in structure, reliable, is the developing direction of machine field, but also exists the difficult magnetic field of regulating from the outside, controls the defective of its output voltage and sine voltage waveform.At present rare earth permanent-magnetic generator is made two kinds of intermediate frequency or power frequencies mostly.Intermediate frequency generator because of output frequency all more than 400Hz, can not directly use, must add that inverter becomes 50Hz with frequency, and with voltage control in stable scope, could use, in case and frequency converter break down, generator just can not use.And the power frequency permanent magnet generator is poor owing to voltage stability, and generally about ± 10%, the sinusoidal sex distortion rate of waveform is big, generally about 10%, has limited its scope of application.
Summary of the invention:
The present invention is directed to the deficiency that prior art exists, aim to provide the single-phase multifunctional rare-earth permanent magnet generator that a kind of volume is little, in light weight, efficient is high, simple in structure, reliable, this motor has overcome the very difficult defective that voltage stability is poor, irregularity of wave form is big of regulating magnetic field control voltage from the outside and causing of permanent magnet, and when inverter breaks down, power supply is continued in first loop that can automatically switch to control system, realized multi-functional uninterrupted power supply, it is more reliable to power.
For reaching above purpose, the technical scheme that the present invention takes is:
A kind of single-phase multifunctional rare-earth permanent magnet generator mainly is made up of housing, stator, rotor, inverter and control system; Wherein stator comprises stator core and armature winding, stator core repeatedly is pressed into skewed slot by stator punching, armature winding adopts and do not wait circle concentric type winding: rotor is by rotating shaft, and the cylindrical magnetic yoke is distinguished the tile shape magnet steel of fix N, the pairing of the S utmost point and formed on the yoke cylindrical.
Described a kind of single-phase multifunctional rare-earth permanent magnet generator, stator core have 24～36 grooves that embed armature winding, adopt flume structure, gradient be 1～1.2 slot-pitch angle (
In the formula: β is a slot-pitch angle, and D is the stator core internal diameter, and N is the stator core slot number, and l is a stator core length), it can eliminate the slot ripples in the magnetic field effectively.
Described a kind of single-phase multifunctional rare-earth permanent magnet generator, armature winding adopts and does not wait circle concentric type winding, accounts for 2/3～5/6 of total groove number, effectively 3 in the weakened field, 5,7 subharmonic.
Described a kind of single-phase multifunctional rare-earth permanent magnet generator, permanent magnet are that the width of magnet steel also directly influences the demagnetizing effect of armature reaction to magnet steel with magnetization length and mounting means, and it has stronger anti-degaussing ability.So the tile shape magnet steel selects for use residual flux density big, HCJ is strong, the rare-earth Nd-Fe-B that working temperature is high; Every utmost point can be combined into by 1 or some; The concentric angle of every utmost point magnet steel is in 110 °～130 ° the scope, can make air-gap field more approach sine wave.The size at angle has determined the pole embrace of generator with one heart, and it has influence on the air-gap field waveform, the consumption of the number of turn of armature winding and impedance and magnet steel; The thickness of magnet steel, promptly direction of magnetization length has influenced the demagnetizing effect of armature reaction to magnet steel.Therefore, under the situation that does not influence the air-gap field sine, adapt to the cross-sectional area that increases magnet steel, can reduce the impedance drop of stator armature winding and the friendship of armature reaction, the demagnetizing effect of d-axis reactance, improved the output voltage of generator, reduced the voltage deviation of generator, improved the output voltage precision from zero load to fully loaded each point.By above design, the voltage deviation of single-phase multifunctional rare-earth permanent magnet generator in ± 5%, all the be up to state standards G of GB/T2820.3-1997 of transient voltage deviation and voltage settling time
1Grade standard.Magnet steel adopts tile shape not have the radially mounting structure of pole shoe, and the tile shape magnet steel, directly exposes in air gap on the rotor yoke of magnetic conduction with screw lock, has shortened the length of magnetic path, has improved magnetic flux density, has reduced the consumption of magnet steel, has reduced material cost.Good heat dissipation effect has reduced the demagnetizing effect of temperature to magnet steel simultaneously.
Described a kind of single-phase multifunctional rare-earth permanent magnet generator adds upconverter, sine wave output voltage, and the steady state voltage Deviation Control has reached the G of national GB/T2820.3-1997 standard in ± 1%
3Every performance requirement of level.Concrete grammar is the output U with armature winding
1U
3As the input of frequency converter, behind the ac-dc-ac transform by frequency converter, the sinusoidal wave burning voltage of output 50Hz.Frequency converter is made up of main circuit and control circuit: main circuit comprises rectification circuit, inverter bridge circuit, drive circuit, sampling feedback circuit etc.; Control circuit is to be the compositions such as inverter circuit, drive circuit and protective circuit of core with the microprocessor.In case situation that generator can not power takes place in order to prevent frequency converter to break down, its Control System Design becomes to be made up of two loops: added relay K A in control system, and in relay circuit, having added switching push button switch S B, its operation principle is as shown in Figure 3.The common port U of armature winding W
1Be connected in series an air circuit K
1, the output of circuit breaker two lines in parallel, a normally closed interlock a who succeeds electrical equipment KA
1, the tap U of armature winding W
2Directly receive another normally closed interlock a of relay K A
2, by armature winding U
1U
2, air circuit K
1, relay K A, normally closed interlock a
1a
2, electrical appliance socket C
1And C
2Parallel connection, direct output first loop of composition generator; By armature winding U
1U
3Connect the input of frequency converter B F, output is succeeded two normally open contact b of electrical equipment KA respectively
1b
2, relay K A output termination electrical appliance socket C
1And C
2, it is in parallel after the power coil D of relay K A connects with push-button switch SB with the output of frequency converter B F.By armature winding U
1U
3, air circuit K
1, frequency converter B F, relay K A normally open contact b
1b
2And electrical appliance socket C
1C
2Automatic control second loop of having formed generator.When the generator entry into service, push-button switch SB disconnects, the position that promptly directly powers, and the power coil D of relay K A disconnects, and relay K A is failure to actuate, contact a
1a
2Normally closed, b
1b
2Often opening, does not work in generator second loop, and first loop is in running order, and generator directly provides 50Hz, the sine-wave power of steady state voltage deviation≤± 5%.When push-button switch SB closure, i.e. automatic control power supply position, the coil D energising of relay K A, relay K A action, contact a
1a
2Disconnect b
1b
2Closure, do not work in generator first loop, and second loop is in running order, and the generator automatic control provides 50Hz, the sine-wave power of steady state voltage deviation≤± 1%.In a single day F breaks down when frequency converter B, the output of frequency converter B F no-voltage, and relay K a-power supply coil D no power, relay K A gets back to reset condition, i.e. a automatically
1a
2Closure, b
1b
2Disconnect, at this moment, generator automatically switches to first loop power supply.
Description of drawings:
Fig. 1 is a stator core cutaway view of the present invention.
Fig. 2 is a rotor cutaway view of the present invention.
Fig. 3 is a control system schematic diagram of the present invention.
Embodiment:
Below in conjunction with accompanying drawing optimum implementation of the present invention and operation principle are elaborated:
Embodiment:
A kind of single-phase multifunctional rare-earth permanent magnet generator of the present invention mainly is made up of housing, stator, rotor, inverter and control system; Wherein stator comprises stator core and armature winding, and stator core repeatedly is pressed into skewed slot by stator punching, and armature winding adopts and do not wait circle concentric type winding; Rotor is by rotating shaft 4, and cylindrical magnetic yoke 3 is distinguished the tile shape magnet steel of fix N, the pairing of the S utmost point and formed on yoke 3 cylindricals.
Described a kind of single-phase multifunctional rare-earth permanent magnet generator, stator core have 24～36 grooves that embed armature winding, adopt flume structure, gradient be 1～1.2 slot-pitch angle (
In the formula: β is a slot-pitch angle, and D is the stator core internal diameter, and N is the stator core slot number, and l is a stator core length), it can eliminate the slot ripples in the magnetic field effectively.
Described a kind of single-phase multifunctional rare-earth permanent magnet generator, armature winding adopts and does not wait circle concentric type winding, accounts for 2/3～5/6 of total groove number, effectively 3 in the weakened field, 5,7 subharmonic.
Described a kind of single-phase multifunctional rare-earth permanent magnet generator, the tile shape magnet steel selects for use residual flux density big, and HCJ is strong, the rare-earth Nd-Fe-B that working temperature is high; Every utmost point can be combined into by 1 or some; The concentric angle of every utmost point magnet steel is in 110 °～130 ° the scope, magnet steel adopts tile shape not have the radially mounting structure of pole shoe, as shown in Figure 2, yoke 3 is columnar structured, circle is pressed in the rotating shaft 4 with the cylindrical interference fit of rotating shaft 4 in it, yoke 3 has the screwed hole of several vertical axis, tile shape magnetic links 2 has vertical axis and yoke 3 corresponding screws, its internal diameter is identical with the external diameter of yoke 3, the magnetic links 2 of same polarity (the N utmost point) is locked at the side on the cylindrical of yoke 3 by screw 1, the magnetic links 2 (the S utmost point) of another kind of polarity is locked at by screw 1 on the opposite side cylindrical of horizontal line symmetry of yoke 3, has formed the laterally zygomorphic N utmost point and the S utmost point.By above design, the voltage deviation of single-phase multifunctional rare-earth permanent magnet generator in ± 5%, all the be up to state standards G of GB/T2820.3-1997 of transient voltage deviation and voltage settling time
1Grade standard.
Described a kind of single-phase multifunctional rare-earth permanent magnet generator adds upconverter, sine wave output voltage, and the steady state voltage Deviation Control has reached the G of national GB/T2820.3-1997 standard in ± 1%
3Every performance requirement of level.Concrete grammar is the output U with armature winding
1U
3As the input of frequency converter, behind the ac-dc-ac transform by frequency converter, the sinusoidal wave burning voltage of output 50Hz.Frequency converter is made up of main circuit and control circuit: main circuit comprises rectification circuit, inverter bridge circuit, drive circuit, sampling feedback circuit etc.; Control circuit is to be the compositions such as inverter circuit, drive circuit and protective circuit of core with the microprocessor.In case situation that generator can not power takes place in order to prevent frequency converter to break down, its Control System Design becomes to be made up of two loops: added relay K A in control system, and in relay circuit, having added switching push button switch S B, its operation principle is as shown in Figure 3.The common port U of armature winding W
1Be connected in series an air circuit K
1, the output of circuit breaker two lines in parallel, a normally closed interlock a who succeeds electrical equipment KA
1, the tap U of armature winding W
2Directly receive another normally closed interlock a of relay K A
2, by armature winding U
1U
2, air circuit K
1, relay K A, normally closed interlock a
1a
2, electrical appliance socket C
1And C
2Parallel connection, direct output first loop of composition generator; By armature winding U
1U
3Connect the input of frequency converter B F, output is succeeded two normally open contact b of electrical equipment KA respectively
1b
2, relay K A output termination electrical appliance socket C
1And C
2, it is in parallel after the power coil D of relay K A connects with push-button switch SB with the output of frequency converter B F.By armature winding U
1U
3, air circuit K
1, frequency converter B F, relay K A normally open contact b
1b
2And electrical appliance socket C
1C
2Automatic control second loop of having formed generator.When the generator entry into service, push-button switch SB disconnects, the position that promptly directly powers, and the power coil D of relay K A disconnects, and relay K A is failure to actuate, contact a
1a
2Normally closed, b
1b
2Often opening, does not work in generator second loop, and first loop is in running order, and generator directly provides 50Hz, the sine-wave power of steady state voltage deviation≤± 5%.When push-button switch SB closure, i.e. automatic control power supply position, the coil D energising of relay K A, relay K A action, contact a
1a
2Disconnect b
1b
2Closure, do not work in generator first loop, and second loop is in running order, and the generator automatic control provides 50Hz, the sine-wave power of steady state voltage deviation≤± 1%.In a single day F breaks down when frequency converter B, the output of frequency converter B F no-voltage, and relay K a-power supply coil D no power, relay K A gets back to reset condition, i.e. a automatically
1a
2Closure, b
1b
2Disconnect, at this moment, generator automatically switches to first loop power supply.
Two kinds of power supply forms of a kind of single-phase multifunctional rare-earth permanent magnet generator of the present invention provide respectively by the G among the national standard GN/2820.3-1997
1Level and G
3The reference power supply of level, and has a uninterrupted power supply function, it is poor to have overcome general rare earth permanent-magnetic generator voltage stability, when big the and frequency converter of sine irregularity of wave form breaks down, the out of use defective of generator power supply, enlarge the reliability function of the scope of application and power supply, had outstanding practical value.Main electric property such as following table (is example with 1.5kVA):
Claims (5)
1, a kind of single-phase multifunctional rare-earth permanent magnet generator mainly is made up of housing, stator, rotor, inverter and control system; It is characterized in that stator comprises stator core and armature winding, stator core repeatedly is pressed into skewed slot by stator punching, and armature winding adopts and do not wait circle concentric type winding; Rotor is by rotating shaft, and the cylindrical magnetic yoke is distinguished the tile shape magnet steel of fix N, the pairing of the S utmost point and formed on the yoke cylindrical.
2, a kind of single-phase multifunctional rare-earth permanent magnet generator according to claim 1 is characterized in that stator core has 24～36 grooves that embed armature winding, adopts flume structure, and gradient is 1～1.2 slot-pitch angle
In the formula: β is a slot-pitch angle, and D is the stator core internal diameter, and N is the stator core slot number, and l is a stator core length.
3, a kind of single-phase multifunctional rare-earth permanent magnet generator according to claim 1 is characterized in that the armature winding employing does not wait circle concentric type winding, accounts for 2/3～5/6 of total groove number.
4, a kind of single-phase multifunctional rare-earth permanent magnet generator according to claim 1 is characterized in that the tile shape magnet steel is that residual flux density is big, and HCJ is strong, the rare-earth Nd-Fe-B that working temperature is high; Every utmost point can be combined into by 1 or some, and the concentric angle of every utmost point magnet steel is 110 °～130 °.
5, a kind of single-phase multifunctional rare-earth permanent magnet generator according to claim 1, it is characterized in that control system is made up of two loops: first loop is by armature winding U
1U
2, air circuit, relay normally closed interlock are formed, and directly export the 50Hz sine voltage; Second loop is by armature winding U
1U
3, air circuit, frequency converter, relay normally open contact, push-button switch form; Behind the frequency converter ac-dc-ac transform, the high-precision sine voltage of output 50Hz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009101117469A CN101562361A (en) | 2009-05-13 | 2009-05-13 | Single-phase multifunctional rare-earth permanent magnet generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009101117469A CN101562361A (en) | 2009-05-13 | 2009-05-13 | Single-phase multifunctional rare-earth permanent magnet generator |
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| Publication Number | Publication Date |
|---|---|
| CN101562361A true CN101562361A (en) | 2009-10-21 |
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ID=41221021
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009101117469A Pending CN101562361A (en) | 2009-05-13 | 2009-05-13 | Single-phase multifunctional rare-earth permanent magnet generator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105119398A (en) * | 2015-09-15 | 2015-12-02 | 锐奇控股股份有限公司 | Stator iron core and motor |
-
2009
- 2009-05-13 CN CNA2009101117469A patent/CN101562361A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105119398A (en) * | 2015-09-15 | 2015-12-02 | 锐奇控股股份有限公司 | Stator iron core and motor |
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| ASS | Succession or assignment of patent right |
Owner name: FUJIAN YONGQIANG LEGA POWER EQUIPMENTS CO., LTD. Free format text: FORMER OWNER: ZHUO BENYU Effective date: 20110909 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20110909 Address after: 350300 Fujian Fujian Yong Qiang Industrial Zone Fuqing Yong Qiang Power Equipment Co., Ltd. Applicant after: Fujian Everstrong LEGA Power Equipments Co., Ltd. Address before: 350300 Fujian Fujian Yong Qiang Industrial Zone Fuqing Yong Qiang Power Equipment Co., Ltd. Applicant before: Zhuo Benyu |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20091021 |