CN108923718A - A kind of large power high efficiency energy-saving electric machine - Google Patents
A kind of large power high efficiency energy-saving electric machine Download PDFInfo
- Publication number
- CN108923718A CN108923718A CN201811019190.6A CN201811019190A CN108923718A CN 108923718 A CN108923718 A CN 108923718A CN 201811019190 A CN201811019190 A CN 201811019190A CN 108923718 A CN108923718 A CN 108923718A
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- voltage
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- motor
- inductance
- stator winding
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/16—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
Abstract
A kind of large power high efficiency energy-saving electric machine, by frequency converter, resonance circuit, low voltage three-phase motor form；There are three resonance circuits, each to be composed in series respectively by inductance, resonant capacitance and the tuner of every phase stator winding, effect is to significantly improve the voltage of stator winding when accessing low-tension supply, reach the numerical value of the voltage 6KV or 10KV of high-voltage motor, realizes energy conservation；The effect of tuner is the capacitor for testing different capabilities, makes the resonance circuit of each phase that resonance occur；The effect of frequency converter is the output voltage and frequency for adjusting power supply, guarantees sufficiently high voltage amplification factor, the voltage of every phase stator winding is made to reach identical high pressure numerical value；The insulation standard of the enameled wire of low voltage three-phase motor stator winding needs to reach the level of high-voltage motor, and inductance value is high, and resistance value is small, the voltage of inductance and capacitor when improving resonance.
Description
Technical field
The present invention relates to the free energy and environment protection fields, and in particular to the manufacturing technology field of high-tension motor.
Background technique
Compared to other any energy, electric energy is that most convenient and fast Model Energy, motor then convert electrical energy into the world
The common power device of mechanical energy.Ac three-phase asynchronous motor is earliest motor, is widely used in every field.
As the bearing power of motor is continuously increased, since supply voltage is constant, electric current is increasing, stator winding
Impedance is smaller and smaller, is unable to satisfy manufacture and requires.Then, improving supply voltage becomes the means for breaking through high-power limitation, gradually
Develop a kind of New-type electric machine-high-voltage motor.
For example, when the power of motor reaches 500KW, for the low voltage motor of line voltage 380V, P=IUcos φ, electric current
I=P/Ucos φ=500KW/380Vcos φ, I > 1315.8A, the impedance of each phase stator windingThis
The conducting wire of stator winding coil and power supply can not be accomplished at all.Therefore, low voltage motor is suitable for the defeated of middle low power
Out, be not suitable for powerful output.Same 500KW power, for the high-voltage motor of line voltage 10KV, electric current I=500KW/
10KVcos φ, I > 50A, 115 Ω of impedance Z < of every phase stator winding, this is completely may be used for the conducting wire of stator winding coil
With receiving.Therefore, high-voltage motor is suitble to powerful output.
High-voltage motor is compared with low voltage motor, is had the advantages that electric current is small, torsion is big, is stablized, energy conservation, high-efficient, disadvantage
It is manufacturing process complexity, cost is high, environmental requirement height (needing high-voltage fence).In contrast, the electric current of low voltage motor is big, stablizes
Property is poor, energy consumption is high, but environmental requirement is low, and manufacturing cost is low.For example, the copper loss of the low voltage motor of the high-voltage motor ratio 380V of 10KV
Small, high-efficient, the high pressure electricity charge are also cheap.
Summary of the invention
The characteristics of in view of above two motor, the present invention provides a kind of method and apparatus, and the advantages of two kinds of motors is tied
Altogether, respective disadvantage is overcome, has not only had the characteristics that high-voltage motor is high-power, energy saving, but also there is low voltage motor manufacture letter
Advantage single, environmental requirement is low.
Present invention technical solution used for the above purpose is：
A kind of large power high efficiency energy-saving electric machine, by frequency converter, resonance circuit, low voltage three-phase motor form；Resonance circuit has
Three, each to be composed in series respectively by inductance, resonant capacitance and the tuner of every phase stator winding, effect is in access low pressure
When power supply, the voltage of stator winding is significantly improved, reaches the voltage 6KV or 10KV of high-voltage motor, realizes energy conservation；The work of tuner
With being the capacitor for testing different capabilities, make the resonance circuit of each phase that resonance occur；The effect of frequency converter is the defeated of adjustment power supply
Voltage and frequency out, guarantee sufficiently high voltage amplification factor, and the voltage of every phase stator winding reaches identical high pressure numerical value；It is low
The insulation standard of the enameled wire of three-phase motor stator winding is pressed to need to reach the level of high-voltage motor, inductance value is high, and resistance value is small,
The voltage of inductance and capacitor when improving resonance.
The working principle of the resonance circuit is according to the theory of LC series resonance, when the frequency and LC series circuit of power supply
Intrinsic frequency it is consistent when, resonance-resonance occurs for circuit, and for entire circuit in purely, electric current reaches maximum；Inductance L and electricity
Hold the voltage on C and all reach maximum, numerical value is equal, and polarity is opposite；The voltage U at inductance both endsLOr the voltage U at capacitor both endsCThan
The voltage E of power supply is also big, is Q times of supply voltage, UL=UC=QE；The available power of power supply completely consumes on resistance R, nothing
Function power is zero, and it is the Q of electrical source consumption power that the magnetic field energy of inductance L storage and the electric field energy of capacitor C storage, which respectively reach maximum,
Times.
Although the magnetic field energy of inductance L storage and the electric field energy of capacitor C storage are all larger than the electric energy of electrical source consumption, if
This Energy extraction is come out and is not easy to, whether with transformer or is directly connected to load, is tested all unsuccessful.The present invention
Method of substitution is taken, directly replaces the inductance L in resonance circuit with inductive load, that is, motor stator winding, inductance L storage
Magnetic field energy will be applied directly on corresponding motor stator winding.
Quality factor q can also claim voltage amplification factor, and Q=ω L/R=2 π fL/R, the L value of inductance is very big, resistance R compared with
It is small, therefore Q value is very big, the resonance potential being added on motor stator winding L is very high, and low voltage motor originally has reformed into high-voltage electricity
Machine.
In entire circuit, power supply only needs to provide the part of active consumption in circuit, and therefore, required power is only
There is the 1/Q of inductance or capacitor energy storage, energy-saving efficiency reaches decades of times, in turn, then means that the output power of motor is power supply
The decades of times of input power.
The frequency converter is three phase converter, frequency adjustment range 1-600Hz, when virtual voltage amplification factor is less than in advance
When definite value, output frequency is significantly improved, promotes voltage amplification factor close to predetermined value；Again by constantly adjusting output voltage, make
The resonance potential of each phase reaches predetermined value.
If there is the lesser fortuitous event of numerical value of Q=ω L/R, the numerical value for needing to reduce resonant capacitance C could improve Q
Value, then resonance frequency f is inevitably enlarged, and frequency converter is needed to increase substantially output frequency, and as a result the revolving speed of motor can also increase,
A retarder need to only be added.
The low voltage three-phase motor, the line footpath of stator winding coil is thicker, and resistance value is smaller；Coil be embedded in silicon steel sheet or
In stator core made of permalloy, inductance value with higher.
The resonant capacitance is one group of high voltage bearing ac capacitor, one of them is tunable capacitor, and three groups of capacitors all fill
Enter in a closed chest, it can be according to requiring to select several different combined capacities, to meet resonance circuit to capacitor number
The precise requirements of value.
A tuner actually control panel, positioned at the front of capacitor box, by voltmeter, ammeter, coarse adjustment
Switch, vernier knob composition, can be according to the current value of circuit, the voltage value coarse adjustment switch selection different capabilities of inductance and capacitor
Capacity test, accurately adjusted when close to resonant state with vernier knob.
The principle of series resonance is applied to the manufacture of three phase alternating current motor by the present invention, realizes voltage amplification and power is put
Greatly, it has the following advantages that：
(1) bigger than the power of low voltage motor.
(2) more at low cost than high-voltage motor, structure is simple, and manufacturing process is simple.
(3) operating environment requirements are low, do not need high-voltage fence, can work normally under conventional environment.
(4) high-efficient, the output power of motor can achieve the decades of times of power input power.
(5) obvious energy conservation.
Detailed description of the invention
Fig. 1 is the circuit diagram of LC series resonance.
Fig. 2 is the circuit interconnect pattern of three phase alternating current motor.
Fig. 3 is the circuit diagram of the embodiment of the present invention one.
Fig. 4 is the working relation figure of the embodiment of the present invention two.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples：
Fig. 1 is the circuit diagram of LC series resonance, as shown, circuit is by AC power source AC, capacitor C, inductance L, electricity
Hinder R composition.
Fig. 2 is the circuit interconnect pattern of three phase alternating current motor, as shown, power supply is three-phase four-wire system, U, V, W are three intersections
Galvanic electricity input terminal is connected with three stator winding L of motor respectively, and the latter uses star connection, public terminal connecting zero line N.
Circuit diagram of the Fig. 3 for the embodiment of the present invention one, the actually combination of Fig. 1 and Fig. 2, every phase stator winding circuit seal in
One capacitor C, the inductance of stator winding coil are L, constitute LC series resonant circuit, and resistance R is the direct current of stator winding coil
Resistance.
Fig. 4 is the working relation figure of the embodiment of the present invention two, which is a power multiplication electricity generation system；System by
Battery 4001, inverter 4002, frequency converter 4003, capacitor box 4004, terminal box 4005, motor 4006, gearbox
4007 and generator 4008 form.
During operation due to motor, there are the mutual inductance of alternate mutual inductance, stator coil and rotor coil, stator winding
Dynamic electric inductance value L it is actually bigger than the static number of apparatus measures, need to determine resonant capacitance C through overtesting.
The inductance L is dynamic inductance when every phase stator winding coil works, and inductance value is larger, the exchange of generation
Impedance is larger, inductive drop ULMuch larger than supply voltage U.
The capacitor C is the capacitance group that several high-voltage capacitances are composed in series, and pressure resistance reaches 15KV, is mounted in a capacitive
Interior and stator winding inductance constitutes series resonant circuit.
The stator winding coil material is the enameled wire of high pressure resistant, high insulation standard, and newest Inverter fed motor can be used
Kapton, Inverter fed motor enameled wire, nano combined crosslinked polyethylene high-tension cable technical products, line footpath is thicker, direct current
Resistance value is smaller.
The battery 4001 is one group of automobile storage battery with charger, and voltage is 12V~48V, can use generator
The 4008 electric energy rectification chargings issued.
The inverter 4002 is compact low power inverter, and function is to be converted to the direct current of battery 4001
The alternating current of 0-220V.
The frequency converter 4003 is multipurpose type, there is multiple input ports, DC port can directly with battery 4001
It is connected, AC port can be connected with 4002 output interface of inverter, can also be connected with alternating current single-phase 220V or three-phase 380V；Output
End connects with capacitor box 4004；Its function is that above-mentioned power supply is become to the continuously adjustable out-put supply of frequency, voltage.
The capacitor box 4004, built-in three independent capacitance groups, respectively with three stator winding of three-phase motor
Terminals connect；The front of capacitor box is tuner, and different capacitances is according to circumstances selected when for testing.
The terminal box 4005 is the terminal box on 4006 base of threephase motor, built-in six terminals, wherein three
A to be connected respectively with three capacitance groups in capacitor box 4004, the other three is shorted, and becomes the common end of three-phase windings.
The motor 4006 is three-phase low-voltage motor, is power output device；The line footpath of three-phase windings coil is thick, electricity
Resistance value is smaller, and is embedded in stator core made of the silicon steel sheet or permalloy of high permeability, inductance value with higher,
To improve voltage amplification factor；Coil use high insulation standard enameled wire, can it is high pressure resistant, guarantee phase insulation, turn-to-turn insulation,
Insulation against ground.
The gearbox 4007, function are to significantly improve the revolving speed of motor, reach the specified of generator 4008
Revolving speed；Since the number of magnetic pole pairs of motor 4006 can be big by sub 1, and the frequency modulation of frequency converter 4003 also results in the revolving speed of motor
Variation, the revolving speed of motor and the rated speed of generator will not be identical, therefore needing speed change just can be such that the two matches.
The generator 4008, be three-phase synchronous generator, effect be by the amplified mechanical energy of system power again
Become electric energy, and charges by power supply 4001 of sub-fraction electric energy.
The Fabrication parameter of motor is designed by taking 500KW motor as an example below.
If the line voltage U of three-phase windingsO=10KV, PO=500KW, then phase current I=PO/UOCos φ > 50A；Due to string
When joining resonance, every circuitry phase is pure resistor element circuit, then has R=Ui/ I, the phase voltage U that low-tension supply providesi=220V, R <
220V/50A=4.4 Ω, if R round numbers, R=4 Ω；Voltage amplification factorAnd Q=ω L/R,
Then L=QR/ ω=40KV/380V100 π=335Mh；Also, LC=1/ ω2, C=1/ ω2L=30 μ F.
Power input powerAnd PO=500KW, efficiency eta=PO/Pi=26=
2600%；This means that the low-tension supply of line voltage 380V need to only consume the electric energy of 19KW, so that it may make motor output about 500KW's
Power.
Manufacture requires：
1, the magnet wire insulation grade of every phase stator winding reaches the level of high-voltage motor, and pressure resistance is more than 15KV.
2, in magnetic circuit made of the silicon steel sheet or permalloy of the enameled wire insertion high permeability of every phase stator winding, guarantee
The L value of winding is sufficiently large, this is similar with low power motor.
3, the line footpath of enameled wire is thicker, and resistance value R is smaller, identical as low pressure mid power motor, different from high-voltage motor.
4, the numerical value of resonant capacitance is accurate, and three groups are wanted completely the same.
5, the inductance L of threephase stator winding, resistance R and voltage must be completely the same, otherwise just will appear three-phase imbalance
The phenomenon that.
6, the volume size of motor and power match and high-tension motor is similar.
The experiment work process of the embodiment of the present invention one is：
1. measure the inductance value L and resistance value R of motor stator winding respectively with inductance measuring meter, multimeter, it is preliminary to count
Resonant capacitance value C and voltage amplification factor Q is calculated, is inserted in test card.
2. selecting capacitor C, three capacitances want essentially equal, connect respectively with the inductance of motor stator winding；It connects
Energization source and frequency converter measure the voltage and current of every phase winding, capacitor, are recorded in test card under the conditions of power frequency 50Hz
In.
3. the numerical value of capacitor C is from small to large, the voltage and current of every phase winding, capacitor is constantly measured, is recorded in test
In table.
4. the data in pair test card are analyzed, phase current maximum is found, and capacitance voltage is equal with inductive drop
The case where, as circuit resonance state；Conversely, phase current maximum is found, and the situation that capacitance voltage is close with inductive drop, then
Trimmer C.
5. due to manufacturing, it is likely that the lesser situation of numerical value that will appear Q=ω L/R will propose high q-factor, just need
Improve resonance frequency；The signal that frequency converter is fed back according to sampled signal line, constantly adjustment output frequency, test whether to reach humorous
Vibration.
6. whether the voltage for measuring every phase winding under resonant state is equal, otherwise adjusts every phase output voltage of frequency converter,
Keep its equal.
7. record the voltage value under every phase winding resonant state, current value, resonant capacitance value, frequency converter output frequency and
Output voltage calculates the voltage amplification factor of motor stator winding.
8. calculating rated output power according to the voltage amplification factor of motor, add the load of different capacity, measurement is practical
Peak power output.
The experiment work process of the embodiment of the present invention two is：
1. on the basis of the above embodiment 1, selecting battery 4001, inverter according to the input power of motor
4002, frequency converter 4003 select generator 4008 according to the actual peak power output of motor, and the rated power of the latter is less than
The peak power output of motor.
2. the revolving speed of motor 4006 is measured, compared with the revolving speed of generator 4008, to the gear mechanism in gearbox 4007
Structure parameter is adjusted, and keeps the rotating ratio of the two consistent, if the rotating ratio of motor and generator is 1: 2, then main in gearbox
The rotating ratio of driving wheel and follower is 1: 2.
It is battery after the charged device rectifying and wave-filtering of a portion 3. generator 4008 issues the alternating current of three-phase 380V
4001 chargings.
Claims (11)
1. a kind of large power high efficiency energy-saving electric machine, by frequency converter, resonance circuit, low voltage three-phase motor form；Resonance circuit has three
A, each to be composed in series respectively by inductance, resonant capacitance and the tuner of every phase stator winding, effect is in access low tension
When source, the voltage of stator winding is significantly improved, reaches the voltage 6KV or 10KV of high-voltage motor, realizes energy conservation；The effect of tuner
It is the capacitor for testing different capabilities, makes the resonance circuit of each phase that resonance occur；The effect of frequency converter is to adjust the output of power supply
Voltage and frequency, guarantee sufficiently high voltage amplification factor, and the voltage of every phase stator winding reaches identical high pressure numerical value；Low pressure
The insulation standard of the enameled wire of three-phase motor stator winding needs to reach the level of high-voltage motor, and inductance value is high, and resistance value is small, with
The voltage of inductance and capacitor when improving resonance.
2. a kind of large power high efficiency energy-saving electric machine according to claim 1, it is characterised in that there are three the resonance circuits,
It is composed in series respectively by inductance, resonant capacitance and the tuner of every phase stator winding.
3. a kind of large power high efficiency energy-saving electric machine according to claim 1, it is characterised in that the composition of the resonance circuit
Method is method of substitution, directly replaces the inductance L in resonance circuit, inductance L storage with inductive load, that is, motor stator winding
Magnetic field energy will be applied directly on corresponding motor stator winding.
4. a kind of large power high efficiency energy-saving electric machine according to claim 1, it is characterised in that the frequency converter is three phase transformations
Frequency device, frequency adjustment range 1-600Hz significantly improve output frequency when virtual voltage amplification factor is less than predetermined value, are promoted
Voltage amplification factor is close to predetermined value；Again by constantly adjusting output voltage, the resonance potential of each phase is made to reach predetermined value.
5. a kind of large power high efficiency energy-saving electric machine according to claim 1, it is characterised in that the low voltage three-phase motor,
The line footpath of stator winding coil is thicker, and resistance value is smaller；Coil is embedded in stator core made of silicon steel sheet or permalloy, tool
There is higher inductance value.
6. a kind of large power high efficiency energy-saving electric machine according to claim 1, it is characterised in that the low voltage three-phase motor,
Volume size matches with power and high-tension motor is similar.
7. a kind of large power high efficiency energy-saving electric machine according to claim 1 or 2, it is characterised in that the resonant capacitance is
One group of high voltage bearing ac capacitor, one of them is tunable capacitor, and pressure resistance reaches 15KV, three groups of capacitors be fitted into one it is closed
It, can be according to requiring to select several different combined capacities, to meet resonance circuit to the precise requirements of capacitance values in chest.
8. a kind of large power high efficiency energy-saving electric machine according to claim 1 or 2, it is characterised in that the inductance L is every
Dynamic inductance when phase stator winding works, inductance value is larger, and the AC impedance of generation is larger, inductive drop ULMuch larger than electricity
Source voltage U.
9. a kind of large power high efficiency energy-saving electric machine according to claim 1 or 2, it is characterised in that the tuner is actually
One control panel is made of positioned at the front of capacitor box voltmeter, ammeter, coarse adjustment switch, vernier knob, can basis
The voltage value of the current value of circuit, inductance and capacitor switchs the capacity test of selection different capabilities with coarse adjustment, to close to resonance shape
It is accurately adjusted when state with vernier knob.
10. a kind of large power high efficiency energy-saving electric machine according to claim 1 or 5, it is characterised in that the stator winding
Coil method is the enameled wire of high pressure resistant, high insulation standard, and pressure resistance is thin using newest corona-resistant polyimide more than 15KV
Film, Inverter fed motor enameled wire, nano combined crosslinked polyethylene high-tension cable technical products.
11. a kind of large power high efficiency energy-saving electric machine according to claim 1, it is characterised in that the embodiment of the present invention
One experiment work process is：
1) with inductance measuring meter, multimeter measure respectively motor stator winding inductance value L and resistance value R, primary Calculation it is humorous
Shake capacitance C and voltage amplification factor Q, inserts in test card.
2) capacitor C is selected, three capacitances want essentially equal, connect respectively with the inductance of motor stator winding；Connect electricity
Source and frequency converter measure the voltage and current of every phase winding, capacitor, are recorded in test card under the conditions of power frequency 50Hz.
3) numerical value of capacitor C from small to large, constantly measures the voltage and current of every phase winding, capacitor, is recorded in test card
In.
4) data in test card are analyzed, finds phase current maximum, and the feelings that capacitance voltage is equal with inductive drop
Condition, as circuit resonance state；Conversely, finding phase current maximum, and the situation that capacitance voltage is close with inductive drop, then finely tune
Capacitor C.
5) due to manufacturing, it is likely that the lesser situation of numerical value that will appear Q=ω L/R will propose high q-factor, it is necessary to mention
High resonant frequency；The signal that frequency converter is fed back according to sampled signal line, constantly adjustment output frequency, test whether to reach resonance.
6) whether the voltage for measuring every phase winding under resonant state is equal, otherwise adjusts every phase output voltage of frequency converter, makes it
It is equal.
7) voltage value, current value, resonant capacitance value, the output frequency of frequency converter and the output under every phase winding resonant state are recorded
Voltage calculates the voltage amplification factor of motor stator winding.
8) according to the voltage amplification factor of motor, rated output power is calculated, adds the load of different capacity, measurement is actual most
Big output power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811019190.6A CN108923718A (en) | 2018-09-03 | 2018-09-03 | A kind of large power high efficiency energy-saving electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811019190.6A CN108923718A (en) | 2018-09-03 | 2018-09-03 | A kind of large power high efficiency energy-saving electric machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108923718A true CN108923718A (en) | 2018-11-30 |
Family
ID=64407429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811019190.6A Pending CN108923718A (en) | 2018-09-03 | 2018-09-03 | A kind of large power high efficiency energy-saving electric machine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2594735A (en) * | 2020-05-06 | 2021-11-10 | Imra Europe S A S | Resonant electrical machine |
| GB2594736A (en) * | 2020-05-06 | 2021-11-10 | Imra Europe S A S | Hybrid electrical machine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1060372A (en) * | 1991-08-14 | 1992-04-15 | 张金善 | Efficient energy-saving resonance-type ac motor |
| CN1794564A (en) * | 2005-11-24 | 2006-06-28 | 哈尔滨工业大学 | High performance variable frequency speed regulation electric machine |
| WO2006137607A1 (en) * | 2005-06-22 | 2006-12-28 | Leetronix Co., Ltd. | Adaptive coupling circuits using multi resonance tanks |
-
2018
- 2018-09-03 CN CN201811019190.6A patent/CN108923718A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1060372A (en) * | 1991-08-14 | 1992-04-15 | 张金善 | Efficient energy-saving resonance-type ac motor |
| WO2006137607A1 (en) * | 2005-06-22 | 2006-12-28 | Leetronix Co., Ltd. | Adaptive coupling circuits using multi resonance tanks |
| CN1794564A (en) * | 2005-11-24 | 2006-06-28 | 哈尔滨工业大学 | High performance variable frequency speed regulation electric machine |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2594735A (en) * | 2020-05-06 | 2021-11-10 | Imra Europe S A S | Resonant electrical machine |
| GB2594736A (en) * | 2020-05-06 | 2021-11-10 | Imra Europe S A S | Hybrid electrical machine |
| GB2594735B (en) * | 2020-05-06 | 2022-11-16 | Imra Europe S A S | Resonant electrical machine |
| GB2594736B (en) * | 2020-05-06 | 2023-01-11 | Imra Europe S A S | Hybrid electrical machine |
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