CN201263116Y - High-efficiency energy-saving rare-earth permanent magnet direct drive device - Google Patents
High-efficiency energy-saving rare-earth permanent magnet direct drive device Download PDFInfo
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- CN201263116Y CN201263116Y CNU200820074130XU CN200820074130U CN201263116Y CN 201263116 Y CN201263116 Y CN 201263116Y CN U200820074130X U CNU200820074130X U CN U200820074130XU CN 200820074130 U CN200820074130 U CN 200820074130U CN 201263116 Y CN201263116 Y CN 201263116Y
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- earth permanent
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Abstract
The utility model discloses a high-efficiency and energy-saving device for directly driving a rare-earth permanent magnet; the device essentially consists of a rare-earth permanent magnetic brushless motor, a drive controller and a magnetic-pole position sensor; the motor is basically the same with an AC asynchronous motor in structure, and only rotors thereof are different; the structure of the drive controller is basically the same with that of an transducer hardware of the AC asynchronous motor, except an extra position detecting sensor, and the main circuits of both the two are the same; difference only exists on a main control board and control software, and the elements, the material cost and the manufacturing cost thereof are basically the same. The high-efficiency and energy-saving device realizes smooth speed regulation by a driver, can obtain a rated efficiency up to 91 percent, or an efficiency up to 88 percent if only one third of a load is added; the motor directly drives the load to rotate so that the transmission efficiency is significantly improved; and the mechanical transmission part can be free of maintenance. As the cost of intermediate transmission devices, such as belts, gear boxes and the like, are saved, the device takes obvious advantage in the overall cost.
Description
Affiliated technical field
The utility model is power-saving technology, the new product most effective, that power savings is best in the electric system energy-saving field.
Background technology
The most green energy is the energy of saving, and also claims " the 5th energy ".Exploitation and popularization power-saving technology and new product more and more receive the whole society, the whole mankind's attention and concern.Rare-earth electric motor and speed-adjusting and control system thereof are made up of rare-earth electric motor body, driving governor, magnetic pole position sensor three parts; Integrating rare-earth electric motor technology, modern high-power electric and electronic technology, little process chip technology and modern ac drive control theory and technology, is a kind of typical electromechanical integration novel high-performance power set; Have advantages such as volume is little, in light weight, specific power is big, system effectiveness is high, simple in structure, reliable, easy to maintenance, no matter active demand is all arranged at national defence, military project or civil area.In the electric system energy-saving field also is new technology, the new product most effective, that power savings is best.
Rare earth permanent magnet synchronous speed control system mechanical property is hard, has the high efficient area of suitable wide region, is fit to long-term low-speed running, frequent heavy load starting or the occasion of stall is arranged, and this is that the Asynchronous Frequency-variable governing system is difficult to realize.The most suitable direct drive unit of making low speed, big moment is saved inefficient intermediate gearings such as belt, gear box, and power saving rate can reach more than 40%.Reduce advantages such as equipment maintenance cost, raising dynamic response in addition.
Summary of the invention
The present invention mainly is made up of rare earth permanent magnetic brushless motor, driving governor, magnetic pole position sensor three parts, directly drive the load machine rotation with rare-earth permanent magnet brushless motor replacement asynchronous machine and intermediate gearings such as belt, gear box, low speed, big torque power are provided, simultaneously, realize smooth stepless speed-regulating by driving governor.
Technical scheme of the present invention is: the stator winding of rare earth permanent magnetic brushless motor is three symmetrical star connections, be stained with the permanent magnet that has magnetized on the multisegmented rotor, magnetic pole position sensor is housed in motor, replace mechanical commutation in electronics commutation mode, can stepless speed regulation, the working speed scope is very big.Driving governor, mainly comprise data-signal processing DSP control unit, power drive unit, power subsystem, adopting dsp chip will drive with control is integrated in one, can on driver, programme easily, the software of drive controlling is at the control of rare-earth permanent magnet brushless motor, and the skidding controlled function also is integrated in the driving governor.Utilize hall position sensor to detect the motor pole position, calculate current motor angle variable by high speed processor with rate signal, and then calculate the position signalling of motor, control the brushless DC motor commutation accurately.Overcome the restriction that is subjected to conventional position sensor machining accuracy and installation accuracy and caused the asymmetric situation of position signalling.The high efficiency energy-saving rare earth permanent-magnet direct drive unit realizes stepless speed control by driver, and rated efficiency reaches 91%, and efficient also can reach 88% when 1/3 load.Motor direct-drive load rotation, transmission efficiency significantly improves, and mechanical driving part is non-maintaining.Owing to save intermediate gearing expenses such as belt, gear box, overall cost advantage is obvious.
Description of drawings
Fig. 1 is a rare earth permanent magnet direct drive unit schematic diagram
Fig. 2 is a rare earth permanent magnet direct drive unit fundamental diagram
Embodiment
The high efficiency energy-saving rare earth permanent-magnet direct driving device as shown in Figure 1.Mainly form by rare earth permanent magnetic brushless motor, driving governor, magnetic pole position sensor three parts.Its operation principle as shown in Figure 2.The stator winding of motor is three symmetrical star connections, be stained with the permanent magnet that has magnetized on the multisegmented rotor, in order to detect the polarity of rotor, magnetic pole position sensor is housed in motor, replaces mechanical commutation, overcome the shortcoming of traditional brush motor carbon brush slip-ring in electronics commutation mode, can stepless speed regulation, the working speed scope is very big, adopts dsp chip that driver and controller are integrated in one, and can programme on driver easily.Can be operated in ultralow rotating speed, and starting torque is big, is subjected to the influence of voltage ripple of power network hardly.The system effectiveness height, electric machine temperature rise is lower, and the life-span significantly improves than conventional motors, and motor noise is lower.
Rare earth permanent magnet directly drives control system, mainly comprises data-signal processing DSP control unit, power drive unit, power subsystem.Its function is: accept motor startup, stop, brake signal, with the startup of control motor, stop and braking; Accept magnetic pole position sensor signal and rotating signal, be used for controlling the break-make of each power tube of inverter bridge, produce continuous torque; Accept speed command and feedback speed signal, be used for controlling and the adjustment rotating speed; Protection and demonstration or the like are provided.The main circuit that rare earth permanent magnet directly drives control system is a typical voltage-type AC-DC-AC circuit, and the symmetrical alternation square wave of constant amplitude equifrequency is provided.Alternately exchange of permanent magnet N-S on the motor rotor, make magnetic pole position sensor produce U, V, the W square wave of 120 ° of phase differences, in conjunction with just/reverse signal produces effective six state encoding signals, handle by logic module, the rotor revolution is crossed a pair of N-S utmost point, and power tube promptly becomes the conducting successively of six kinds of states by fixed combination.Under every kind of state, the energising of two phase windings is only arranged, change a kind of state successively, the magnetic field axis that stator winding produces is in 60 ° of electrical degrees of spatial rotational, rotor is followed the stator field rotation and is equivalent to 60 ° of electrical degree locus, rotor is on reposition, make magnetic pole position sensor U, V, W produce one group by agreement and newly encode, new coding has changed the conducting combination of power tube again, the magnetic field axis that stator winding the is produced 60 ° of electrical degrees that readvance, so circulation, motor will produce continuous torque, drag load and do rotation continuously.Motor magnetic pole position transducer coding makes the leading rotor field of axial location, the two phase winding resultant magnetic fields axial location of energising, thus though the original position of rotor wherein, motor will produce enough big detent torque starting moment.
The rare earth permanent magnet direct driving device that is applied to oil-extracting screw pump replaces asynchronous machine with dc brushless motor and realizes stepless speed control by driver, speed adjustable range 0～250r/min, nominal torque 1300Nm, 3 times of overload magnifications, rated efficiency reaches 91%, and efficient also can reach 88% when 1/3 load.Motor direct-drive load rotation has saved inefficient intermediate gearings such as belt and reduction gearing, and transmission efficiency significantly improves, and mechanical driving part is non-maintaining.
The high efficiency energy-saving rare earth permanent-magnet direct drive unit, the low speed large torque moment permanent-magnet dc brushless motor is according to the special development of load characteristic, the hardware of driver is similar to the Induction Motor-Driven device of equal capacity, but software is the control at dc brushless motor, the brake controlled function also is integrated in the driver, so these universal frequency converters are difficult to accomplish.
Daqing oil field oil-extracting screw pump direct driving device, the Zhejiang of our exploitation new phoenix ring chemical fibre group screw extruder direct driving device is in the on-the-spot trial run of user, with original Asynchronous Frequency-variable speed regulating device ratio, power savings reaches respectively more than 40% and 50%, substantially accomplish non-maintaining, save the maintenance maintenance expense, be subjected to user's close attention and welcome.
Claims (5)
1, the high efficiency energy-saving rare earth permanent-magnet direct drive unit mainly is made up of rare earth permanent magnetic brushless motor, driving governor, magnetic pole position sensor three parts, it is characterized in that: replace conventional asynchronous motor and intermediate gearings such as belt, gear box with rare earth permanent magnetic brushless motor.
2, according to right 1 described high efficiency energy-saving rare earth permanent-magnet direct drive unit, it is characterized in that: replace the conventional asynchronous motor with rare earth permanent magnetic brushless motor and directly be connected with load machine with intermediate gearings such as belt, gear boxes.
3, according to right 1 described high efficiency energy-saving rare earth permanent-magnet direct drive unit, it is characterized in that: the stator winding of rare earth permanent magnetic brushless motor is three symmetrical star connections, be stained with the permanent magnet that has magnetized on the multisegmented rotor, magnetic pole position sensor is housed in motor, replaces mechanical commutation in electronics commutation mode.
4, according to right 1 described high efficiency energy-saving rare earth permanent-magnet direct drive unit, it is characterized in that: driving governor, mainly comprise data-signal processing DSP control unit, power drive unit, power subsystem, driving is integrated in one with control.
5, according to right 1 described high efficiency energy-saving rare earth permanent-magnet direct drive unit, it is characterized in that: cause the asymmetric situation of position signalling in order to overcome the restriction that is subjected to conventional position sensor machining accuracy and installation accuracy, adopt hall position sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820074130XU CN201263116Y (en) | 2008-11-06 | 2008-11-06 | High-efficiency energy-saving rare-earth permanent magnet direct drive device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820074130XU CN201263116Y (en) | 2008-11-06 | 2008-11-06 | High-efficiency energy-saving rare-earth permanent magnet direct drive device |
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| CN201263116Y true CN201263116Y (en) | 2009-06-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU200820074130XU Expired - Fee Related CN201263116Y (en) | 2008-11-06 | 2008-11-06 | High-efficiency energy-saving rare-earth permanent magnet direct drive device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101807827B (en) * | 2009-09-25 | 2012-07-18 | 方建成 | Digital motor |
| CN103095209A (en) * | 2013-01-24 | 2013-05-08 | 成都宏天电传工程有限公司 | Medium-voltage frequency conversion system used for shale gas extraction |
| CN106194770A (en) * | 2016-09-30 | 2016-12-07 | 克奥兹泵业（深圳）有限公司 | Little Minitype centrifugal water pump |
| CN107442313A (en) * | 2017-09-19 | 2017-12-08 | 深圳市华星光电技术有限公司 | A kind of spray equipment, paint finishing and spraying method |
| CN110902279A (en) * | 2019-11-28 | 2020-03-24 | 安徽中车瑞达电气有限公司 | Permanent magnet synchronous motor direct drive system applied to belt conveyor |
-
2008
- 2008-11-06 CN CNU200820074130XU patent/CN201263116Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101807827B (en) * | 2009-09-25 | 2012-07-18 | 方建成 | Digital motor |
| CN103095209A (en) * | 2013-01-24 | 2013-05-08 | 成都宏天电传工程有限公司 | Medium-voltage frequency conversion system used for shale gas extraction |
| CN106194770A (en) * | 2016-09-30 | 2016-12-07 | 克奥兹泵业（深圳）有限公司 | Little Minitype centrifugal water pump |
| CN106194770B (en) * | 2016-09-30 | 2019-05-07 | 克奥兹泵业（深圳）有限公司 | Small Minitype centrifugal water pump |
| CN107442313A (en) * | 2017-09-19 | 2017-12-08 | 深圳市华星光电技术有限公司 | A kind of spray equipment, paint finishing and spraying method |
| CN107442313B (en) * | 2017-09-19 | 2019-08-02 | 深圳市华星光电技术有限公司 | A kind of spray equipment, paint finishing and spraying method |
| CN110902279A (en) * | 2019-11-28 | 2020-03-24 | 安徽中车瑞达电气有限公司 | Permanent magnet synchronous motor direct drive system applied to belt conveyor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Tianjin Aerospace Xinmao Rare-Earth Mechanical and Electrical Technology Co., Ltd. Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice |
Addressee: Tianjin Aerospace Xinmao Rare-Earth Mechanical and Electrical Technology Co., Ltd. Document name: Notification of Termination of Patent Right |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090624 Termination date: 20121106 |