CN101895183A - Low-speed permanent magnet motor suitable for voltage of 1,140 V - Google Patents
Low-speed permanent magnet motor suitable for voltage of 1,140 V Download PDFInfo
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- CN101895183A CN101895183A CN2010102633814A CN201010263381A CN101895183A CN 101895183 A CN101895183 A CN 101895183A CN 2010102633814 A CN2010102633814 A CN 2010102633814A CN 201010263381 A CN201010263381 A CN 201010263381A CN 101895183 A CN101895183 A CN 101895183A
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Abstract
The invention discloses a low-speed permanent magnet motor suitable for the voltage of 1,140 V. The motor has the pole pair number p of 6, namely the pole number of 12; stator coil windings are designed to generate 6 pairs of rotating magnetic fields with alternating N and S poles, and the rotation speed of each magnetic field is 500 r/min; rotors are designed to be 6 pairs (12 poles) of permanent magnetic poles with the alternating N and S poles; and the rotating magnetic fields generated by stators drive rotor permanent magnetic fields to synchronously run according to a principle of the magnetic field that same magnetic poles attract each other and opposite magnetic poles repel each other, so that the output rotating speed is 500 r/min. Synchronous rotating speed output of 500 r/min is realized by a three-phase permanent magnet synchronous motor with the center height of more than 200. The problem that a low-speed three-phase permanent magnet synchronous motor is arranged in an oil extractor in oilfield is solved, so that 1, the rotating speed is reduced without replacing a belt pulley, and the belt loss is reduced at the same time; and 2, the rotating speed is reduced without adding frequency conversion equipment, so that additional equipment investment and maintenance costs are saved. A three-phase dual-speed or multi-speed asynchronous motor higher by 1 or 2 power grades can be replaced, so that the problem of light load drive is solved, electrical energy is saved, and oil production cost is reduced.
Description
Technical field
The present invention relates to the rotor of used for oil-field oil pumper low speed three-phase permanent-magnetic synchronous motors, the stator coil winding data is mainly used in the permanent magnet synchronous motor, belongs to motor and makes the field.
Background technology
At present, oil-field oil pumper need dispose the three-phase permanent-magnetic synchronous motors that rotating speed is 500r/min, but according to national standard, its rotating speed of the three-phase permanent-magnetic synchronous motors of motor height of center below 315 is minimum to be 750 rev/mins, can not satisfy the oil-field oil pumper needs:
1) when oil pumper needs the rotating speed of 500r/min, need on former motor to realize that because belt wheel reduces, the belt contact area reduces by reducing the belt wheel size, transmission efficiency reduces, and is easy to skid, and belt deterioration increases.
2) in case when belt wheel can't reduce again, the one, realize needed speed by installing RHVC additional, increased the equipment input cost so greatly.
3) the how fast threephase asynchronous of repacking, but the asynchronous motor starting moment of torsion is little, must strengthen installed capacity, so just causes " low load with strong power ", energy consumption increases, and cost for oil production increases.
Summary of the invention
The objective of the invention is under the prerequisite that does not influence the permanent magnet motor performance, motor rotor structure and stator winding data are redesigned calculating, make permanent magnet synchronous motor reach 500 rev/mins of low speed.
The objective of the invention is to be achieved through the following technical solutions:
Be suitable for the low-speed permanent-magnet motor of voltage 1140V, motor number of pole-pairs p=6, be 12 utmost points, the stator coil design of Windings become to produce 6 pairs of rotating magnetic fields that N, S replace mutually, and its rotary speed is 500r/min, and rotor design becomes 6 permanent magnet poles that (12 utmost point) N, S replaced extremely mutually, inhale mutually according to the magnetic field same sex, the principle that the opposite sex is repelled each other, the rotating magnetic field that is produced by stator drags the rotor permanent-magnetic field and synchronizedly runs, and reaches output speed 500r/min.Be embedded with the sintered NdFeB magnet steel that is complementary with rotating speed in the rotor.
The present invention realizes the synchronous speed output of 500r/min at the three-phase permanent-magnetic synchronous motors of height of center more than 200.Solved oil-field oil pumper configuration low speed three-phase permanent-magnetic synchronous motors problem:
1, no longer needs to reduce rotating speed, reduce belt deterioration simultaneously by changing belt wheel.
2, acquire frequency conversion equipment no longer in addition and reduce rotating speed, saved extra equipment input and maintenance cost.
Can replace the three-phase double speed or the polyspeed asynchronous motor of a high 1-2 power grade, solve " low load with strong power " phenomenon, save electric energy, reduce cost for oil production.
Description of drawings
With embodiment the present invention is described in further detail with reference to the accompanying drawings below.
Fig. 1 is the structure chart of the described motor rotor of the embodiment of the invention;
Fig. 2 .1 is the front view of permanent-magnet steel; Fig. 2 .2 is the end view of permanent-magnet steel;
Fig. 3 is the permanent magnet poles distribution map of motor.
Embodiment
According to motor synchronous speed formula n=60f/p
N-synchronous speed in the formula formula
The f-frequency
P-motor number of pole-pairs
When motor speed is n=500r/min, when supply frequency was f=50Hz, motor number of pole-pairs p=6 was 12 utmost point synchronous motors.Principle according to permanent magnet synchronous motor, the stator coil design of Windings becomes to produce 6 pairs of rotating magnetic fields that N, S replace mutually, its rotary speed is 500r/min, rotor design becomes 6 permanent magnet poles that (12 utmost point) N, S replaced extremely mutually, inhale mutually according to the magnetic field same sex, the principle that the opposite sex is repelled each other, the rotating magnetic field that is produced by stator drags the rotor permanent-magnetic field and synchronizedly runs, and reaches output speed 500r/min.
Motor rotor is overrided to form by rotor punching, 12 main magnet steel holes 1 and secondary magnet steel hole 2 (see figure 1)s along the circumferential direction evenly distribute in the punching, punching laminates the back and generate master/secondary magnet steel groove by master/secondary magnet steel hole on the folded high direction of rotor, be used to embed Nd-Fe-B magnet steel, magnet steel 3 is a sintered neodymium iron boron material, be cuboid, after magnetizing, become the permanent-magnet steel (see figure 2), magnet steel 3 discharges according to certain rules by magnetic direction, make rotor generate magnetic and be respectively N, 12 permanent magnet poles 4 (see figure 3)s that S polarity replaces mutually, stator winding embeds winding by producing 6 to (12 utmost point) rotating magnetic field mode, and connect, make stator after energising, produce magnetic field,, produce the rotating magnetic field of 500r/min when frequency during at 50Hz.
Claims (2)
1. be suitable for the low-speed permanent-magnet motor of voltage 1140V, it is characterized in that motor number of pole-pairs p=6 is 12 utmost points, the stator coil design of Windings becomes to produce 6 pairs of rotating magnetic fields that N, S replace mutually, the permanent magnet poles that rotor design becomes 6 couples of N, S to replace extremely mutually.
2. the low-speed permanent-magnet motor of suitable voltage 1140V according to claim 1 is characterized in that: be embedded with the sintered NdFeB magnet steel that is complementary with rotating speed in the rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102633814A CN101895183A (en) | 2010-08-26 | 2010-08-26 | Low-speed permanent magnet motor suitable for voltage of 1,140 V |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102633814A CN101895183A (en) | 2010-08-26 | 2010-08-26 | Low-speed permanent magnet motor suitable for voltage of 1,140 V |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101895183A true CN101895183A (en) | 2010-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102633814A Pending CN101895183A (en) | 2010-08-26 | 2010-08-26 | Low-speed permanent magnet motor suitable for voltage of 1,140 V |
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| CN (1) | CN101895183A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102420483A (en) * | 2011-12-21 | 2012-04-18 | 铜陵浩岩节能科技有限公司 | Rotor of low-speed high-power motor |
| CN105958782A (en) * | 2016-05-12 | 2016-09-21 | 张学义 | Radial-tangential permanent magnet and brushless electromagnetism hybrid excitation driving motor |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2444339Y (en) * | 2000-09-26 | 2001-08-22 | 李向东 | DC electric machine with print winding of dual face Nd Fe B magnetic steel |
| CN2728091Y (en) * | 2004-08-23 | 2005-09-21 | 吉林大学 | Flat type permanent magnetic synchronous starting generator |
| CN201041975Y (en) * | 2007-06-01 | 2008-03-26 | 闽东电机(集团)股份有限公司 | Low-speed and ultra-high efficient lanthanon permanent magnetic synchronous electromotor |
| CN201222669Y (en) * | 2008-05-23 | 2009-04-15 | 江苏安捷机电技术有限公司 | Rotor punching slice for permanent magnet motor |
| CN101552524A (en) * | 2009-03-19 | 2009-10-07 | 浙江中源电气有限公司 | A permanent magnet synchronous excitation generator |
| CN201478895U (en) * | 2009-06-23 | 2010-05-19 | 无锡市华东钢业机械有限公司 | Rotor integrated punching sheet of permanent magnet synchronous motor of oil extractor of oil field |
| CN201742272U (en) * | 2010-08-26 | 2011-02-09 | 无锡市华东电机厂 | Low-speed permanent magnetic motor with applicable voltage of 1140V |
-
2010
- 2010-08-26 CN CN2010102633814A patent/CN101895183A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2444339Y (en) * | 2000-09-26 | 2001-08-22 | 李向东 | DC electric machine with print winding of dual face Nd Fe B magnetic steel |
| CN2728091Y (en) * | 2004-08-23 | 2005-09-21 | 吉林大学 | Flat type permanent magnetic synchronous starting generator |
| CN201041975Y (en) * | 2007-06-01 | 2008-03-26 | 闽东电机(集团)股份有限公司 | Low-speed and ultra-high efficient lanthanon permanent magnetic synchronous electromotor |
| CN201222669Y (en) * | 2008-05-23 | 2009-04-15 | 江苏安捷机电技术有限公司 | Rotor punching slice for permanent magnet motor |
| CN101552524A (en) * | 2009-03-19 | 2009-10-07 | 浙江中源电气有限公司 | A permanent magnet synchronous excitation generator |
| CN201478895U (en) * | 2009-06-23 | 2010-05-19 | 无锡市华东钢业机械有限公司 | Rotor integrated punching sheet of permanent magnet synchronous motor of oil extractor of oil field |
| CN201742272U (en) * | 2010-08-26 | 2011-02-09 | 无锡市华东电机厂 | Low-speed permanent magnetic motor with applicable voltage of 1140V |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102420483A (en) * | 2011-12-21 | 2012-04-18 | 铜陵浩岩节能科技有限公司 | Rotor of low-speed high-power motor |
| CN105958782A (en) * | 2016-05-12 | 2016-09-21 | 张学义 | Radial-tangential permanent magnet and brushless electromagnetism hybrid excitation driving motor |
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Application publication date: 20101124 |