CN1731656A - Polyphase rectification / three-phase auxiliary excitation control high-speed induction generator - Google Patents
Polyphase rectification / three-phase auxiliary excitation control high-speed induction generator Download PDFInfo
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- CN1731656A CN1731656A CN 200410055584 CN200410055584A CN1731656A CN 1731656 A CN1731656 A CN 1731656A CN 200410055584 CN200410055584 CN 200410055584 CN 200410055584 A CN200410055584 A CN 200410055584A CN 1731656 A CN1731656 A CN 1731656A
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Abstract
The invention relates to a high speed asynchronous motor that controlled with m phase rectification/three-phase auxiliary excitation, where in m=3, 6, 9, 12, 15.... The generator exploits the combination rotor of the real hollow core type rat cage winding of have the ring narrow gam, or takes the full real core rotor of the wreath form ditch, or takes to protect the wreath or colligation to take of fold a slice of type rat cage rotor; The generator embedded inside the stator slot puts two sets of windings, a set of m/3 Y that move the pi/m electricity angle one by one in order connects a method three round a power windings for constitute mutually, be alongside of a capacitor, through commutate to equip exportation; Commutate to equip medium m/3 three commutate the bridge direct current side to have already merge, establish mutually with string to merge a mixture to connect three kinds of method of method; Another three-phase auxiliary excitation winding, circumscribe a double to change to flow device, its power unit direct current side connects electric capacity, don't establish power supply; Should equip the adoption definite direction control technique, follow behind the frequency of the electric voltage of stator winding, mutually, regulate the electric current of the auxiliary excitation winding, maintain to change to flow to equip the power unit direct current side electric capacity electric voltage and m to commutate to output electric voltage for the initial value mutually.
Description
Technical field
The present invention relates to the high-speed induction generator of a kind of m commutating phase/three-phase additive excitation control, wherein m=3,6,9,12,15 ...
Background technology
In autonomous systems such as boats and ships, aircraft, vehicle, oil drilling platform, the demand of electric energy is more and more, and its electric power system volume, weight is along with the increase of capacity is also increasing, so, power density and the efficient of sending out electric power system be must improve, its volume, weight reduced.
Improving an effective way sending out the electric power system power density is to improve the rotating speed of generator.Traditional DC generator commutation spark problem has limited the increase of rotating speed and capacity; The rated frequency of common synchronous generator mostly is 50Hz, and its rotating speed is up to 3000 rev/mins.(patent No.: ZL94107628.8), rotating speed just has been subjected to the restriction of ac energisation frequency to the synchronous generator of powering simultaneously as the three-phase alternating current and the poly phase rectification of the applicant's invention; The brushless ac synchronous generator of charged power electronics convertor assembly, as the applicant's patent: have rotor and hand over the synchronous generator of the stabilizer shaft winding (patent No.: though ZL94206766.5) be not subjected to frequency limitation, can improve rotating speed, increase power density, but because parts such as its excitation generator and rotating rectifier, make the rotor structure complexity also to be subjected to the restriction of mechanical strength, rotating speed is difficult to increase substantially.Induction generator (also being asynchronous generator) rotor structure is simple, and the mechanical strength height can move under high speed, and power density ratio is all much bigger with the synchronous generator and the DC generator of capacity.But when traditional induction generator is in parallel with big electrical network, can not need excitation regulation device, because its power factor is very low, thereby efficient is also low; Excitation regulation voltage stabilizing function when the induction generator in the autonomous system can only adopt shunt capacitor to realize load variations, its excitation system volume is big and control is complicated, because capacitor can not be regulated voltage stabilizing control weak effect continuously.Along with the development of power electronic technology, the induction generator excitation is controlled on this bottleneck problem in the restriction autonomous system, can adopt power electronic technology to solve:
(1) at generator output end and connect the Passive LC device, to make its equivalence be a variable capacitance in suitable control in addition, thereby provide variable leading reactive current according to load variations, produce the change in voltage that excitation magnetic potential causes with the compensating load electric current, keep output end voltage constant, but the volume and weight of the required inductance of control system is too huge, has limited the capacity of induction generator;
(2) at generator output end and connect and have inverter and provide variable reactive power to come compensating load to change required exciting power, can reach the effect of stabilized end voltage, but because general induction generator power factor is low, required inverter capacity is bigger, has determined to be only applicable to the induction generator of middle low power.
Summary of the invention
The design that the purpose of this invention is to provide the high-speed induction generator of a kind of m commutating phase/three-phase additive excitation control, wherein m=3,6,9,12,15 ...This generator amature adopts high strength alloy steel solid forging solid rotor with axle, and embed the mouse cage sliver and constitute composite rotors, stator has two cover windings, one cover m phase power winding also connects m phase self excited capacitance device, power to DC load through m commutating phase device, another set of three-phase is assisted the external static inversion field regulator of winding, and the excitation magnetic potential when being used for regulating because of load and rotation speed change keeps rectifier output voltage constant.Two cover winding mutually insulateds do not have circuit to connect, and the magnetic field coupling is only arranged.This induction generator has following advantage:
(1) can be directly and high speed prime mover supporting, significantly improve generator speed, reduce its volume, weight;
(2) power density height, good, simple in structure, the good economy performance of mechanical strength;
Power factor (PF) height when (3) being with rectification load, Electro Magnetic Compatibility is good, and it is low to have overcome common induction generator power factor (PF), the defective that efficient is not high;
(4) solve heritage and answered the complicated difficult problem of generator excitation control, realized stable and continuous adjusting of generator output voltage.
The main feature of the described induction generator electric power system of the application is:
The a generator amature adopts whole high strength alloy steel to forge into solid construction, along the circumferential direction evenly slot in the rotor core surface, embed sliver, after the two end plates welding, form hybrid rotor, the rotor core surface evenly has annular narrow ditch vertically, to reduce surface eddy loss unshakable in one's determination, this generator amature has higher mechanical strength, is fit to high-speed cruising;
In same group of groove of b stator, be embedded with the asymmetric m commutating phase winding that a symmetrical three-phase additive excitation winding of cover and a cover are made of m/3 three symmetrical phase windings, three phase windings of m/3 Y-connection are 180 °/m of displacement electrical degree successively, wherein m=3,6,9,12,15
The axis of c three-phase additive excitation winding and the axis phase shift of m commutating phase winding are the α electrical degree, 0≤α≤180 °/m, and three-phase additive excitation winding also adopts Y-connection;
D is according to the different requirements of two cover winding coupled powers, and m commutating phase winding can adopt the winding construction form identical or different with three-phase additive excitation winding, makes the winding short distance consistent with breadth coefficient or inconsistent;
Each Y winding of e m commutating phase winding three-phase Y connection method in parallel or Δ connection excitation electric capacity are connected to corresponding three-phase commutation bridge input;
F is according to different dc load voltages, electric current, and m/3 three-phase commutation bridge can in parallel be exported in DC side, and the output of also can connecting at the m/6=integer and greater than 1 o'clock, can also connection in series-parallel mix connection output;
When a g m/3 three phase rectifying bridge DC side parallel or connection in series-parallel mixed connection output, per two three phase rectifying bridge DC sides can be connected to alternate Equilibrium Reactor IPR, to improve AC current waveform, improved power factor;
The external field regulator of this generator three-phase additive excitation winding of h, field regulator is made of inversion/rectification bidirectional current transformer, adopt digital directional control technology, automatically follow the stator winding electric voltage frequency, phase place is regulated its additive excitation winding current, can keep the current transformer dc capacitor voltage constant, it is invariable to keep m commutating phase output voltage;
I convertor assembly direct current input side only adopts capacitor, no external direct current power supply.
Above-mentioned technology has realized high power density, high efficiency and the good power supply quality of the high-speed induction generator of m commutating phase/three-phase additive excitation control.
The objective of the invention is to realize as follows: the high-speed induction generator of m commutating phase of the present invention/three-phase additive excitation control, wherein m=3,6,9,12,15 ...Rotor core is adopted the high strength alloy steel solid forging with axle, and rotor surface along the circumferential direction evenly is processed with Z
2Individual groove, inside embeds sliver, two ends unshakable in one's determination are with the copper coin identical with the rotor core cross section, after trapezoidal sliver and the welding of end copper coin, form the cage rotor winding, constitute hybrid rotor jointly with the whole steel alloy rotor of conduction and magnetic conduction, the rotor core surface evenly has annular narrow ditch vertically, to reduce rotor eddy current loss.This induction generator rotor has very high mechanical strength, can adapt to the requirement that runs up, thereby significantly improves the power density of generator.Rotor also can adopt the full solid rotor of the narrow ditch of band shape or the stacked cage rotor that appearance is added with binding strap or the reinforcing of high-strength material retaining ring; When not being very high, rotor can directly adopt laminated core of ordinary silicon steel disc and mouse cage winding construction in generator speed.
Embed the stator winding of two cover mutually insulateds in this generator unit stator groove, one cover m phase power winding, adopt m/3 Y to move π/m electrical degree connection mutually, the m that forms with the three-phase capacitor of m/3 Y connection or Δ connection after the self excited capacitance parallel connection, powers to DC load through the m commutating phase device of m/3 three-phase commutation bridge composition mutually.M/3 three-phase commutation bridge can be in DC side parallel connection or tandem-type connection output, at m/6=2,3,4 ... the time, can also connection in series-parallel mix connection output, obtaining different rectifier output voltages, and various connected mode all has the pulse wave rectifier output waveform 2m time.When m/3 three phase rectifying bridge DC side parallel or connection in series-parallel mixed connection output, the three phase rectifying bridge DC side of per two parallel connection methods can be directly in parallel, can also be connected to Equilibrium Reactor IPR, to improve AC current waveform, the raising power factor.Another set of for three-phase additive excitation control winding, have same magnetic pole logarithm with m commutating phase winding, external three phase static field regulator.Field regulator is made of inversion/rectification bidirectional current transformer, adopt digital directional control technology, automatically follow the stator winding electric voltage frequency, phase place is regulated its additive excitation winding current, can keep the current transformer dc capacitor voltage constant, it is invariable to keep m commutating phase output voltage.
When prime mover drags the no-load running of induction generator rotor arrival rated speed, rotor remanent magnetism produces the remanent magnetism electromotive force at m phase power winding, this electromotive force acts on the m phase self excited capacitance, produce the capacity current of 90 ° of electrical degrees of advanced potential, this electric current m phase winding of flowing through produces and the equidirectional armature reaction magnetic potential of remanent magnetism, thereby strengthens air-gap field, m phase winding electromotive force is further increased, until setting up burning voltage.When m phase winding rectification output direct current power, this winding current degaussing armature reaction and commutation reactance pressure drop and internal impedance pressure drop etc. can make rectifier output voltage descend.Field regulator adopts m commutating phase output voltage feedback, utilizes digital directional control technology, regulate the additive excitation winding current of current transformer output, thereby it is constant to stablize m commutating phase output voltage.This generator is similar to general induction generator, at the operation of generator state, rotor speed n=(1-s) n
1(s＜0) is higher than synchronous speed n
1=60f
1/ p.When fluctuation took place rotating speed, excitation system can change three-phase additive excitation winding current size and frequency from motion tracking, kept generator m commutating phase output voltage constant.
Description of drawings
Fig. 1 is m commutating phase/three phase excitation high-speed induction generator principle figure
Fig. 2 is 12-phase rectification/three-phase additive excitation high-speed induction generator principle figure
Fig. 3 .a is the parallel connection method of four three-phase commutation bridges and Equilibrium Reactor
Fig. 3 .b is that the connection in series-parallel of four three-phase commutation bridges and Equilibrium Reactor mixes connection
Fig. 3 .c is the tandem-type connection of four three-phase commutation bridges
Fig. 4 is cascade system three level bi-directional pulse width modulation additive excitation device main circuit schematic diagrams
Fig. 5 is an additive excitation device control strategy schematic diagram
Fig. 6 .a is the rotor core side sectional view
Fig. 6 .b is the rotor core axial, cross-sectional view
Fig. 7 is stator ten two-phase winding expanded views
Fig. 8 is a stator additive excitation control developed winding diagram
Y among the figure
1, Y
2... Y
M/3Be the individual three-phase symmetric winding of displacement π/m electrical degree successively of the m/3 in the m phase power winding, 1 is the three-phase additive excitation control winding of Y connection, and 2 is the composite rotors equivalent winding, and 3 is three-phase additive excitation adjusting device main circuit, and C is a m phase self excited capacitance, C
1Be three phase excitation convertor assembly main circuit dc bus capacitor, BG
1, BG
2, BG
3, BG
4Be the three phase rectifier device, 4 is Equilibrium Reactor group circuit, 5,6,7,8,9,10 is tandem type bi-directional pulse width modulation unsteady flow main circuit power cell, 11 are rotating shaft, 12 are rotor core, and rotating shaft and rotor core are solid forging, and 13 is rotor bar, 14 is the axial annular ditch of rotor surface, and 15 is rotor end ring.
Embodiment
Below in conjunction with accompanying drawing the present invention is further described below.
Fig. 2 is 12-phase rectification/three-phase additive excitation high-speed induction generator system schematic diagram, and machine operation is at the generator state, the n of rotation speed n=(1-s)
1＞n
1=60f
1/ p, revolutional slip s＜0, n
1Be synchronous speed.Wherein in the ten two-phase power windings, Y
1, Y
2, Y
3, Y
4Each three phase winding moves 15 ° of electric angles mutually, and each three phase winding three-phase Y connection method in parallel or delta connection self excited capacitance device C receive the uncontrollable or controlled rectification bridge of three-phase.4 three-phase commutation bridge BG in the 12-phase rectification device
1, BG
2, BG
3, BG
4DC side can adopt direct parallel connection method, promptly among Fig. 2 and Fig. 3 .a Equilibrium Reactor IPR is directly used the connection of lead short circuit; Also can be shown in Fig. 2 and Fig. 3 .a, per two three-phase commutation bridges are in parallel again after through an IPR parallel connection, to change the commutation process of rectifier cell electric current, improve the waveform of ten two-phase alternating current electric currents, improve the power factor of induction generator.The connection of Equilibrium Reactor IPR is to move the Y of 30 ° of electric angles mutually
1, Y
3IPR of two rectification bridge joints, Y
2, Y
4IPR of two rectification bridge joints is best.4 three-phase commutation bridges can mix connection by the Equilibrium Reactor connection in series-parallel, shown in Fig. 3 .b; Can not want Equilibrium Reactor directly with two three phase rectifying bridge DC side parallels yet.The connection in series-parallel connection is compared with parallel connection method, and output voltage is doubled, and output current is reduced to the latter's 1/2nd.The tandem-type connection of 4 three-phase commutation bridges is shown in Fig. 3 .c, and its rectifier output voltage is four times of Fig. 3 .a, and output current is 1/4th of Fig. 3 .a.
When the induction generator rotating speed reached working speed, ten two-phase winding induced potentials by rotor remanent magnetism produces acted on the capacitor C, produce the electric current of 90 ° of electric angles of advanced potential, this electric current produces the strong magnetic magnetic potential of armature in ten two-phase winding, forms self-excitation, sets up floating voltage.Capacitor C also can change rectifier cell electric current commutation process except that the effect of setting up voltage, improve ten two-phase alternating current current waveforms, improves power factor and efficient.Three-phase additive excitation control winding is received the three-phase alternating current side of a two way convertor, and the convertor assembly DC side also connects the energy-storage travelling wave tube capacitor C that discharges and recharges of a constant volume
1, dc power supply is not set.Current transformer adopts 12-phase rectification voltage signal feedback, utilizes the DSP technology to realize the orientation control of stator Y winding voltage, from motion tracking stator additive excitation winding voltage frequency and phase place, keeps convertor assembly dc bus capacitor C
1Voltage is constant, and to the required electric current of Y winding output, it is constant substantially to keep the 12-phase rectification output voltage, also can regulate generator 12-phase rectification power output in the multi-machine parallel connection electric power system simultaneously.Excitation is different with general convertor assembly with the convertor assembly schematic circuit, exchange in theory and be output as pure reactive current, consider the influence of power device loss and excitation winding loss, convertor assembly in time is in the rectification operating state, provide necessary active power, to keep capacitor C
1Voltage is constant substantially.
The additive excitation device adopts cascade system bi-directional pulse width modulation PWM convertor circuit in the embodiment of the present application.Accompanying drawing 4 is an additive excitation device main circuit schematic diagram, this mode has reduced single power device voltage withstand class, realize the many level output of equivalent higher switching frequency having reduced generator additive excitation current harmonics component with lower switching frequency, reduced harmonic loss.
The application has proposed the excitation unit control strategy shown in the accompanying drawing 5 on the basis of the high-speed induction generator dynamic model of the m commutating phase of being set up/three-phase additive excitation control.Its control strategy is described below: be orientated core with stator additive excitation winding voltage, gather this three-phase winding voltage U
Sabc, through the DSP computing produce first-harmonic unit just, cosine signal, thereby keep its exciting current frequency consistent with the frequency of 12-phase rectification winding voltage; Adopt 12-phase rectification output voltage feedback signal u
DcWith reference voltage u
* DcRelatively, through pi regulator A computing, obtain the referenced reactive current amplitude again; Adopt each power cell dc capacitor voltage feedback signal u
ClWith reference voltage u
* ClRelatively,, obtain capacitor charge and discharge active current instruction amplitude again through pi regulator B computing; Active current and referenced reactive current amplitude respectively with unit sine, cosine signal multiplication mutually, and then stack is synthetic and obtain three-phase current reference signal i through adjuster C computing
* Sabc, with convertor assembly output current signal i
SabcRelatively, the active current and the referenced reactive current instantaneous signal of the output of control PWM main circuit.Wherein active current is used for power cell dc bus capacitor u
ClDischarge and recharge, u is kept in the fluctuation of capacitance voltage that main compensation circuit loss and harmonic wave, asymmetric etc. causes
ClConstant; The amplitude of the additional excitation winding electric current of reactive current signal controlling convertor assembly output, compensating rotational speed change or the variation of the output voltage that the load current variation causes, keep output voltage constant.Above-mentioned control strategy does not have direct dependence to the parameter of many windings induction generator, can be under the condition of rotating speed and load variations, and it is constant to keep the induction generator rectifier output voltage; Also can regulate this generator output voltage, perhaps in the multi-machine parallel connection electric power system, regulate the power output of separate unit induction generator.
Fig. 6 .a is an axial, cross-sectional view unshakable in one's determination, and Fig. 6 .b is the rotor core side sectional view.Armature spindle and employing high strength alloy steel unshakable in one's determination solid forging, the rotor circumference direction evenly has Z
2Individual groove, embed the copper sliver identical in the groove with flute profile, do not need to add in addition slot wedge, sliver and the welding of both sides unshakable in one's determination becket, constitute the mouse cage winding, form composite rotors with the solid rotor of magnetic conduction and conduction, the rotor core surface uniformly-spaced has annular narrow ditch vertically, to reduce eddy current loss in the rotor surface iron core; The annular ditch degree of depth and width are determined according to the main subharmonic current depth of penetration of rotor surface.
What the description of present embodiment was primarily aimed at is 12-phase rectification/three-phase additive excitation high-speed induction generator; but because m=3,6,9,12,15 ... basic identical Deng m commutating phase/three-phase additive excitation induction generator principle and 12-phase rectification/three-phase additive excitation high-speed induction generator, thereby m=3,6,9,12,15 ... be all within protection scope of the present invention Deng m commutating phase/three-phase additive excitation induction generator.
Claims (7)
- The high-speed induction generators of 1 one kinds of m commutating phases/three-phase additive excitation control, wherein m=3,6,9,12,15...... is characterized in that:A. rotor core is adopted the high strength alloy steel solid forging with axle, rotor surface along the circumferential direction evenly is processed with the groove that embeds sliver, sliver and end metallic plate welding back constitute the mouse cage winding, rotor surface is equidistant vertically to be processed with annular narrow ditch, to reduce the eddy current loss on rotor core surface, mouse cage winding and solid rotor are formed the compound rotor of high strength;B. in same group of groove of stator, embed that two cover magnetic pole logarithms are identical, the stator winding of mutually insulated, one cover is the asymmetric m phase winding that moves the symmetrical three-phase Y connection method winding formation of π/m electrical degree successively mutually by m/3, and another set of is the three-phase additive excitation control winding of Y connection;One all in parallel of three phase windings of each Y connection are set up the three-phase Y connection method that floating voltage uses or the capacitor of Δ connection in the c.m phase winding, power to DC load through the mutually uncontrollable rectifying device of m;D. the external cover of three-phase additive excitation winding is operated in the three-phase power electronics convertor assembly of two kinds of patterns of inversion/rectification, this convertor assembly is according to the excitation control strategy of setting up on induction generator dynamic model basis, adopt digital control technology, frequency, phase place from motion tracking stator additive excitation control winding voltage, regulate the electric current of this winding, it is constant to keep m commutating phase output voltage.
- The high-speed induction generator of 2 m commutating phases as claimed in claim 1/three-phase additive excitation control is characterized in that:The additive excitation device adopts three phase rectifier/inversion bidirectional current transformer power supply, and this convertor assembly DC side also is connected to the electric capacity that can discharge and recharge, and DC power supply is not set; According to the excitation control strategy of on such many windings induction generator dynamic model basis, formulating, adopt digital directional control technology, automatically follow frequency, the phase place of stator winding voltage, regulate the electric current of additive excitation winding, keep the convertor assembly DC side and connect the voltage of capacitor constant, it is constant to keep m commutating phase output voltage stabilization, perhaps regulates rectifier output voltage in the multi-machine parallel connection electric power system, changes the power output of separate unit generator.
- The high-speed induction generator of 3 m commutating phases as claimed in claim 1 or 2/three-phase additive excitation control, it is characterized in that: in the mutually uncontrollable rectifying device of m, according to different load voltages, electric current, m/3 three phase rectifying bridge DC side can in parallel or series connection, be integer and be greater than or equal at 2 o'clock at m/6, can also connection in series-parallel mix connection.
- 4 high-speed induction generators as claim 1 or 2 or 3 described m commutating phases/three-phase additive excitation control, it is characterized in that: in the mutually uncontrollable rectifying device of m, three three phase rectifying bridge DC sides that phase winding connects of 30 ° of electric angles of per two mutual displacements insert alternate Equilibrium Reactor, carry out parallel connection or connection in series-parallel output again, to reduce power winding current harmonic component, improve generator power factor and efficient.
- The 5 high-speed induction generators as described m commutating phase one of in the claim 1 to 4/three-phase additive excitation control is characterized in that:For reducing additive excitation control winding harmonic current, voltage, three phase rectifier/inversion bidirectional current transformer adopts cascade multi-level pulse-width modulation PWM unsteady flow main circuit, each power cell DC side of this convertor assembly also is connected to the electric capacity that can discharge and recharge, and DC power supply is not set; According to the excitation control strategy of on such many windings induction generator dynamic model basis, formulating, adopt digital directional control technology, automatically follow frequency, the phase place of stator winding voltage, regulate the electric current of additive excitation winding, keep each power cell DC side and connect the voltage of capacitor constant, it is constant to keep m commutating phase output voltage stabilization, perhaps regulates rectifier output voltage in the multi-machine parallel connection electric power system, changes the power output of separate unit generator.
- 6 high-speed induction generators as described m commutating phase one of in the claim 1 to 5/three-phase additive excitation control, it is characterized in that: uncontrollable rectifying device is replaced by m phase controllable rectifying device, thereby can change the rectifier output voltage setting value significantly by changing the angle of flow of rectifier cell.
- 7 high-speed induction generators as described m commutating phase one of in the claim 1 to 6/three-phase additive excitation control, it is characterized in that: rotor adopts the full solid rotor of the narrow ditch of band shape or the normal lamination formula cage rotor that appearance is added with binding strap or the reinforcing of high-strength material retaining ring, replaces the rotor core of the narrow ditch of band shape and the composite rotors that the mouse cage winding constitutes.
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| CNB2004100555849A CN100454725C (en) | 2004-08-06 | 2004-08-06 | Polyphase rectification / three-phase auxiliary excitation control high-speed induction generator |
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| CNB2004100555849A CN100454725C (en) | 2004-08-06 | 2004-08-06 | Polyphase rectification / three-phase auxiliary excitation control high-speed induction generator |
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| CN102158029A (en) * | 2011-03-22 | 2011-08-17 | 青岛大学 | Phase number-variable asynchronous motor winding connecting method |
| CN102231588A (en) * | 2011-06-16 | 2011-11-02 | 南京航空航天大学 | Capacitance compensation circuit structure applied to doubly salient DC generator |
| CN102332766A (en) * | 2010-06-25 | 2012-01-25 | 法雷奥电机控制系统公司 | The alternating current motor of the mixing electric equipment that is used to supply power and charges |
| CN103023057A (en) * | 2012-10-26 | 2013-04-03 | 河南师范大学 | Voltage-type PWM (pulse-width modulation) rectifier output power control method under power grid unsymmetrical fault |
| CN105515325A (en) * | 2016-02-26 | 2016-04-20 | 电王精密电器(北京)有限公司 | 50kW-100kW permanent-magnet constant-voltage generator with automatic speed regulation function |
| CN113178845A (en) * | 2021-04-25 | 2021-07-27 | 哈尔滨旋驰电气科技有限公司 | Alternating current power supply phase number conversion method and device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1045143C (en) * | 1994-08-01 | 1999-09-15 | 中国人民解放军海军工程学院 | Synchronous generator of three-phase ac and multi-phase rectification symultaneous power supply |
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2004
- 2004-08-06 CN CNB2004100555849A patent/CN100454725C/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102332766A (en) * | 2010-06-25 | 2012-01-25 | 法雷奥电机控制系统公司 | The alternating current motor of the mixing electric equipment that is used to supply power and charges |
| CN102332766B (en) * | 2010-06-25 | 2016-01-13 | 法雷奥电机控制系统公司 | For the alternating current motor of mixing electric equipment of powering and charge |
| CN102158029A (en) * | 2011-03-22 | 2011-08-17 | 青岛大学 | Phase number-variable asynchronous motor winding connecting method |
| CN102231588A (en) * | 2011-06-16 | 2011-11-02 | 南京航空航天大学 | Capacitance compensation circuit structure applied to doubly salient DC generator |
| CN103023057A (en) * | 2012-10-26 | 2013-04-03 | 河南师范大学 | Voltage-type PWM (pulse-width modulation) rectifier output power control method under power grid unsymmetrical fault |
| CN105515325A (en) * | 2016-02-26 | 2016-04-20 | 电王精密电器(北京)有限公司 | 50kW-100kW permanent-magnet constant-voltage generator with automatic speed regulation function |
| CN105515325B (en) * | 2016-02-26 | 2018-06-15 | 电王精密电器(北京)有限公司 | A kind of 50kW-100kW permanent magnets automatic speed regulation constant-voltage generator |
| CN113178845A (en) * | 2021-04-25 | 2021-07-27 | 哈尔滨旋驰电气科技有限公司 | Alternating current power supply phase number conversion method and device |
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| CN100454725C (en) | 2009-01-21 |
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