CN201118417Y - Environment-protection energy-saving lanthanon permanent magnetic electromotor - Google Patents
Environment-protection energy-saving lanthanon permanent magnetic electromotor Download PDFInfo
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- CN201118417Y CN201118417Y CNU2007201552014U CN200720155201U CN201118417Y CN 201118417 Y CN201118417 Y CN 201118417Y CN U2007201552014 U CNU2007201552014 U CN U2007201552014U CN 200720155201 U CN200720155201 U CN 200720155201U CN 201118417 Y CN201118417 Y CN 201118417Y
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Abstract
Disclosed is an environment-friendly energy-saving rare-earth permanent magnet motor which comprises a high-performance rare-earth permanent magnet motor main body and a digital driving controller thereof. In the main body of the motor, a low-loss core stator is tightly pressed into a shell; a coil winding is embedded into a stator slot; a main shaft is tightly pressed into a stamping rotor body; a plurality of tile-shaped rare-earth steel magnets (even in number)with equal semi-diameters are arranged on the outer circle of the stamping rotor body; inner arcs of the rare-earth steel magnets tightly cling to or are half embedded on the outer circle of the stamping rotor body; the rare-earth steel magnets and the rotor construct a permanent-magnet rotor; a sensor assembly is installed at the rear end of the motor and is connected with the circuit of the digital driving controller. Employing digital control technology, the digital driving controller realizes optimized driving control to the motor, and meanwhile the motor adopts an optimized magnetic circuit and the excited magnet applies high-performance rare earth steel magnets, which greatly reduces the volume of the motor and improves the efficiency of the motor by more than 10%; power density of the motor is high and the motor is dispensed with a brush; therefore, pollution to the environment and electromagnetic interference are eliminated.
Description
Technical field
The utility model relates to a kind of motor, especially relates to a kind of environment-friendly type energy-saving rare-earth permanent-magnet electric machine.
Background technology
The speed adjusting performance of direct current machine of the prior art is superior, and low-speed performance is good, operates steadily, but because it adopts is mechanical switching device and carbon brush, can produce dust pollution in running, produces commutation spark simultaneously, causes radio interference.AC frequency conversion induction machine of the prior art bulky, and efficient is lower.
Summary of the invention
The purpose of this utility model is to overcome the problems referred to above of the prior art, and a kind of employing electronic commutation is provided, and running is steady, stepless speed regulation wide ranges, control precision height, the environment-friendly type energy-saving rare-earth permanent-magnet electric machine that the low-speed machinery characteristic is good.
For achieving the above object, the utility model adopts following technical scheme:
A kind of environment-friendly type energy-saving rare-earth permanent-magnet electric machine, it comprises high-performance rare-earth permanent-magnetic motor body and digital driving governor thereof, motor mainly comprises: casing, low-loss stator unshakable in one's determination, coil windings, rotor, rare earth magnetic steel, the rotor overcoat, main shaft, sensor cluster, bearing, it is characterized in that, low-loss stator unshakable in one's determination is overrided to form with flume structure and fractional slot winding by low-loss cold-reduced silicon sheet, press in the casing, coil windings is bumped in the stator slot, the punching that main shaft presses rotor laminates in the middle of the body, rotor laminate radius watt shape rare earth magnetic steels such as even numbered blocks is arranged on the external circle, the rare earth magnetic steel inner arc is close to or partly is embedded on the cylindrical that laminates body of rotor, and rare earth magnetic steel and rotor have been formed the permanent magnetism rotor; The rotor overcoat is that 1 material is made by permeability, is bumped in the permanent magnetism rotor, and the head of rotor overcoat has the fan blade that is evenly distributed; Rear end at motor is equipped with sensor cluster, it is connected with digital driving governor circuit, digital driving governor comprises switch main circuit, drive circuit and control circuit, and main switch circuit receives the drive signal from control circuit, drives the rare-earth permanent-magnet electric machine action; Control circuit receives the sampled signal of sample circuit from the switch main circuit, corresponding generation also outputs control signals in the switch main circuit, reception is positioned at the rotor position information of the sensor cluster reception of rare-earth permanent-magnet electric machine rear end, and corresponding generation and output control signals to drive circuit, realize electronic commutation, receive outside braking instruction simultaneously, produce brake signal and give the brake circuit.
As further improvement, 360 ± 120 ° of space angle p α=K are satisfied in the distribution of sensor cluster, wherein, p is a number of pole-pairs, α is branch's angle, and K is a natural number, comes the sensing rotor position by Hall element and the magnet ring number of poles multi-pole magnet-ring identical with the number of poles of magnet rotor.
As further improvement, described digital driving governor is made up of switch main circuit, drive circuit and full-digital control circuit, and wherein, the switch main circuit is by rectification circuit, filter circuit, and buffer circuit, the brake circuit, inverter circuit is formed; Rectification circuit can be single-phase rectification bridge or three-phase commutation bridge, single-phase or three-phase alternating-current supply is converted to DC power supply through the single-phase rectification bridge or the three-phase commutation bridge of rectification circuit, DC power supply is carried out low-pass filtering through filter circuit, form low internal resistance hardware features direct voltage source, the capacitor C 1 by filter circuit exchanges reactive power with rare-earth permanent magnet motor winding inductive load simultaneously; Buffer circuit is located at each brachium pontis limit of rectification circuit respectively, and the brake circuit is made of jointly brake resistance R 2, diode D2, IGBT insulated gate bipolar triode T1, and its control signal is provided by the full-digital control circuit; Inverter circuit is formed with the MOSFET field effect transistor when the low pressure small-power, and high-power can be made up of discrete IGBT insulated gate bipolar triode or IGBT integration module or IPM intelligent object;
Drive circuit is that the signal with full-digital control circuit 30 output carries out power amplification, and to inverter circuit provide make its full close lead can and the drive signal of reliable turn-off;
The full-digital control circuit is MCU or DSP, this MCU or DSP have embedded middle fracture, high-precision A/DC, FLASH, the SPI interface. the full-digital control circuit receives the position detection signal that external control signal and position detecting circuit send here and produces 6 road PWM modulation signals and sample circuit, user interface, demonstration and guidance panel carry out giving drive circuit after the logic synthesis and make inverter circuit work and drive permanent magnet motor.
As further improvement, the capacitor C 2 in the described buffer circuit is the good noninductive electric capacity of high frequency characteristics, and diode D1 is forward voltage low reverse recovery time of a short fast recovery diode.
As further improvement, described demonstration and guidance panel are LED or LCD display panel, and it is provided with operation push-button: move, stop, just changeing, counter-rotating, acceleration, deceleration, crawl; Indicator light: power supply indication, mistake indication, just/counter-rotating indication, move/stop indication.
As further improvement, user interface can dock the realization host computer with upper machine communication or external control signal or the external control signal is operated driving governor and permanent magnet motor.
As further improvement, described casing is to be made by the good aluminium alloy of heat radiation, is distributed with uniform radiating ribs around the shell.
As further improvement, rare earth magnetic steel is made with the high rare earth permanent-magnetic material of temperature stability.
The beneficial effects of the utility model are, digital driver adopts the digital control technology of optimizing, and realizes the optimization drive controlling to motor, and motor has adopted the magnetic Circuit Design of optimizing simultaneously, excitation adopts high performance rare earth magnetic steel, motor volume is reduced greatly, and power density is high, and electric system efficient improves more than 10%, removed brush simultaneously, environmentally safe, no electromagnetic interference has realized efficient, energy-saving and environmental protection.
Description of drawings
Fig. 1 always schemes for structure of the present utility model
Fig. 2 is the figure that optimizes structure of rare-earth permanent-magnet electric machine
Fig. 3 is the longitudinal sectional drawing of rare-earth permanent-magnet electric machine
Fig. 4 is the circuit structure diagram of digital driving governor.
Embodiment
With reference to accompanying drawing, the utility model preferred embodiment is described in detail, wherein all identical Reference numerals are represented identical parts.
With reference to figure 1, system unit disclosed in the utility model comprises rare-earth permanent-magnet electric machine and digital driving governor two parts.
With reference to figure 2, be the structural representation of the utility model environment-friendly type energy-saving rare-earth electric motor, Fig. 3 is its cutaway view, and with reference to Fig. 2,3, this rare-earth electric motor is an energy-saving efficient motor, and power is by 11W to 22 kilowatt.Main component of electrical machine comprises: casing 1, low-loss stator 2 unshakable in one's determination, coil windings 3, rotor 4, rare earth magnetic steel 5, rotor overcoat 6, main shaft 7, sensor cluster 8, bearing 9.The punching that main shaft 7 presses rotor 4 laminates in the middle of the body, rotor 4 laminate radius watt shape rare earth magnetic steels 5 such as even numbered blocks is arranged on the external circle, rare earth magnetic steel 5 inner arcs are close to or partly are embedded on the cylindrical that laminates body of rotor 4, the high rare earth permanent-magnetic material of rare earth magnetic steel 5 usefulness temperature stabilities is made, has the magnetic energy product height, the characteristics of stable performance.Rare earth magnetic steel 5 has been formed the permanent magnetism rotor with rotor 4.In order to prevent that magnet steel from coming off when motor runs up, rotor overcoat 6 is that 1 material is made by permeability, be bumped in the permanent magnetism rotor, the head of rotor overcoat 6 has the fan blade that is evenly distributed, and just can accelerate the heat radiation of motor when motor rotation. and above several parts have just been formed the rotor of motor.
In addition, casing 1 is to be made by the good aluminium alloy of heat radiation, and the radiating ribs that is evenly distributed is also arranged around the shell.Stator 2 is overrided to form by low-loss cold-reduced silicon sheet, presses into casing 1, and coil windings 3 is bumped in the stator slot, adopts flume structure and fractional slot winding when stator laminates, and it is more steady to get into smooth, and noise is lower.Bearing 9 is pressed in the rear end cap by anchor clamps, again the rear end of rotor is pressed in the middle of the bearing of rear end cap, rotor is put into stator, by anchor clamps front end housing being pressed onto the position then. transducer is divided into two classes, one class is to be made of sensor cluster 8, transducer distributes and satisfies 360 ± 120 ° of space angle p α=K, wherein, p is a number of pole-pairs, and α is branch's angle, K is a natural number, it is positioned at motor rear end, comes the sensing rotor position by Hall element and multi-pole magnet-ring (the magnet ring number of poles is identical with the number of poles of magnet rotor), and another kind of is the precision positions transducer, adopt photoelectric encoder to become resolver, the hi-Fix rotor-position.
Fig. 3 is a rare-earth permanent-magnet synchronous motor total digitalization driving governor exploded view.Referring to Fig. 3, described driving governor comprises rectification circuit 21: single-phase rectification bridge or three-phase commutation bridge, filter circuit 22; buffer circuit 23; brake circuit 24, inverter circuit 25, rare-earth permanent magnet motor 26; sampling and protective circuit 27; drive circuit 28, position detecting circuit 29, full-digital control circuit 30; user interface 31 shows and guidance panel 32.
Rare-earth permanent-magnet synchronous motor total digitalization driving governor is made up of switch main circuit, drive circuit and control circuit, below divides three parts to be illustrated to the operation principle of driving governor:
The switch main circuit is by the rectification circuit among the figure 21: direct current supply need not rectification circuit, filter circuit 22, and buffer circuit 23, brake circuit 24, inverter circuit 25 is formed.
Full-digital control circuit 30 is that MCU (or DSP) is the control centre that rare-earth permanent-magnet electric machine normally moved and realized its various functions, this MCU (DSP) has embedded middle fracture, high-precision A/DC, FLASH, the SPI interface, the inside and outside setting of the sheet that is exclusively used in permanent magnet motor control is arranged, can select powers such as mode sensor and no mode sensor operation. the position detection signal that full-digital control circuit 30 reception external control signals and position detecting circuit 29 are sent here, and produce 6 road PWM modulation signals and sample circuit 27, user interface 31, show and guidance panel 32 carries out giving drive circuit 28 after the logic synthesis and makes inverter circuit 25 work and drive permanent magnet motor 26.Full-digital control circuit 30 also motor is carried out speed closed loop and current closed-loop is regulated, and makes system have good dynamic and static characteristic.The signal of sending into full-digital control circuit 30 by sampling and protective circuit 27 realize short circuit, overcurrent, overvoltage, overheated, etc. failure protection function.
Demonstration and guidance panel 32 comprise that LED (or LCD) display panel carries out rotating speed, error code, demonstration moves, stops, just changeing, reverse.Indicator light: power supply indication, mistake indication, just/counter-rotating indication, move/stop indication.Operation push-button: move, stop, just changeing, counter-rotating, acceleration, deceleration, crawl.
Claims (8)
1. environment-friendly type energy-saving rare-earth permanent-magnet electric machine, it comprises high-performance rare-earth permanent-magnetic motor body and digital driving governor thereof, motor mainly comprises: casing, low-loss stator unshakable in one's determination, coil windings, rotor, rare earth magnetic steel, the rotor overcoat, main shaft, sensor cluster, bearing, it is characterized in that, low-loss stator unshakable in one's determination is overrided to form with flume structure and fractional slot winding by low-loss cold-reduced silicon sheet, press in the casing, coil windings is bumped in the stator slot, the punching that main shaft presses rotor laminates in the middle of the body, rotor laminate radius watt shape rare earth magnetic steels such as even numbered blocks is arranged on the external circle, the rare earth magnetic steel inner arc is close to or partly is embedded on the cylindrical that laminates body of rotor, and rare earth magnetic steel and rotor have been formed the permanent magnetism rotor; The rotor overcoat is that 1 material is made by permeability, is bumped in the permanent magnetism rotor, and the head of rotor overcoat has the fan blade that is evenly distributed; At motor rear end sensor cluster is installed, it is connected with digital driving governor circuit, digital driving governor comprises switch main circuit, drive circuit and control circuit, and main switch circuit receives the drive signal from control circuit, drives the rare-earth permanent-magnet electric machine action; Control circuit receives the sampled signal of sample circuit from the switch main circuit, corresponding generation also outputs control signals in the switch main circuit, reception is positioned at the rotor position information of the sensor cluster reception of rare-earth permanent-magnet electric machine rear end, and corresponding generation and output control signals to drive circuit, realize electronic commutation, receive outside braking instruction simultaneously, produce brake signal and give the brake circuit.
2. environment-friendly type energy-saving rare-earth permanent-magnet electric machine according to claim 1, it is characterized in that, space angle p α=K360 ± 120 ° is satisfied in the distribution of sensor cluster, wherein, p is a number of pole-pairs, α is branch's angle, and K is a natural number, comes the sensing rotor position by Hall element and the magnet ring number of poles multi-pole magnet-ring identical with the number of poles of magnet rotor.
3. environment-friendly type energy-saving rare-earth permanent-magnet electric machine according to claim 1 and 2, it is characterized in that, described digital driving governor is made up of switch main circuit, drive circuit and full-digital control circuit, wherein, the switch main circuit is by rectification circuit, filter circuit, buffer circuit, the brake circuit, inverter circuit is formed; Rectification circuit can be single-phase rectification bridge or three-phase commutation bridge, single-phase or three-phase alternating-current supply is converted to DC power supply through the single-phase rectification bridge or the three-phase commutation bridge of rectification circuit, DC power supply is carried out low-pass filtering through filter circuit, form low internal resistance hardware features direct voltage source, the capacitor C 1 by filter circuit exchanges reactive power with rare-earth permanent magnet motor winding inductive load simultaneously; Buffer circuit is located at each brachium pontis limit of rectification circuit respectively, and the brake circuit is made of jointly brake resistance R 2, diode D2, IGBT insulated gate bipolar triode T1, and its control signal is provided by the full-digital control circuit; Inverter circuit is formed with the MOSFET field effect transistor when the low pressure small-power, and high-power can be made up of discrete IGBT insulated gate bipolar triode or IGBT integration module or IPM intelligent object;
Drive circuit is that the signal with full-digital control circuit 30 output carries out power amplification, and to inverter circuit provide make its full close lead can and the drive signal of reliable turn-off;
The full-digital control circuit is MCU or DSP, this MCU or DSP have embedded middle fracture, high-precision A/DC, FLASH, SPI interface, full-digital control circuit receive the position detection signal that external control signal and position detecting circuit send here and produce 6 road PWM modulation signals and sample circuit, user interface, demonstration and guidance panel carry out giving drive circuit after the logic synthesis and make inverter circuit work and drive permanent magnet motor.
4. environment-friendly type energy-saving rare-earth permanent-magnet electric machine according to claim 3 is characterized in that, the capacitor C 2 in the described buffer circuit is the good noninductive electric capacity of high frequency characteristics, and diode D1 is forward voltage low reverse recovery time of a short fast recovery diode.
5. environment-friendly type energy-saving rare-earth permanent-magnet electric machine according to claim 4 is characterized in that, described demonstration and guidance panel are LED or LCD display panel, and it is provided with operation push-button: move, stop, just changeing, counter-rotating, acceleration, deceleration, crawl; Indicator light: power supply indication, mistake indication, just/counter-rotating indication, move/stop indication.
6. environment-friendly type energy-saving rare-earth permanent-magnet electric machine according to claim 5 is characterized in that, user interface can dock the realization host computer with upper machine communication or external control signal or the external control signal is operated driving governor and permanent magnet motor.
7. environment-friendly type energy-saving rare-earth permanent-magnet electric machine according to claim 6 is characterized in that, described casing is to be made by the good aluminium alloy of heat radiation, is distributed with uniform radiating ribs around the shell.
8. environment-friendly type energy-saving rare-earth permanent-magnet electric machine according to claim 7 is characterized in that, rare earth magnetic steel is made with the high rare earth permanent-magnetic material of temperature stability.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201552014U CN201118417Y (en) | 2007-07-11 | 2007-07-11 | Environment-protection energy-saving lanthanon permanent magnetic electromotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201552014U CN201118417Y (en) | 2007-07-11 | 2007-07-11 | Environment-protection energy-saving lanthanon permanent magnetic electromotor |
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| Publication Number | Publication Date |
|---|---|
| CN201118417Y true CN201118417Y (en) | 2008-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201552014U Expired - Fee Related CN201118417Y (en) | 2007-07-11 | 2007-07-11 | Environment-protection energy-saving lanthanon permanent magnetic electromotor |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101789662A (en) * | 2010-03-09 | 2010-07-28 | 福建福安闽东亚南电机有限公司 | Dual-purpose motor driven by permanent magnet hybrid electric vehicle to generate electricity |
| CN104467296A (en) * | 2014-11-28 | 2015-03-25 | 卧龙电气集团股份有限公司 | Integrated variable frequency motor |
| WO2017121190A1 (en) * | 2016-01-15 | 2017-07-20 | 重庆智仁发电设备有限责任公司 | Low-power generator providing 6kw-15kw of power |
| CN110336422A (en) * | 2019-07-29 | 2019-10-15 | 陈跃勇 | A kind of hall electric machine rotor-position acquisition device |
| CN112448546A (en) * | 2019-09-04 | 2021-03-05 | Tdk株式会社 | Magnet temperature information output device and rotating electrical machine |
-
2007
- 2007-07-11 CN CNU2007201552014U patent/CN201118417Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101789662A (en) * | 2010-03-09 | 2010-07-28 | 福建福安闽东亚南电机有限公司 | Dual-purpose motor driven by permanent magnet hybrid electric vehicle to generate electricity |
| CN104467296A (en) * | 2014-11-28 | 2015-03-25 | 卧龙电气集团股份有限公司 | Integrated variable frequency motor |
| WO2017121190A1 (en) * | 2016-01-15 | 2017-07-20 | 重庆智仁发电设备有限责任公司 | Low-power generator providing 6kw-15kw of power |
| CN110336422A (en) * | 2019-07-29 | 2019-10-15 | 陈跃勇 | A kind of hall electric machine rotor-position acquisition device |
| CN112448546A (en) * | 2019-09-04 | 2021-03-05 | Tdk株式会社 | Magnet temperature information output device and rotating electrical machine |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080917 |