CN201474993U - Position sensorless vector control rare-earth permanent magnet synchronous motor water pump - Google Patents
Position sensorless vector control rare-earth permanent magnet synchronous motor water pump Download PDFInfo
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- CN201474993U CN201474993U CN2009201451309U CN200920145130U CN201474993U CN 201474993 U CN201474993 U CN 201474993U CN 2009201451309 U CN2009201451309 U CN 2009201451309U CN 200920145130 U CN200920145130 U CN 200920145130U CN 201474993 U CN201474993 U CN 201474993U
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- earth permanent
- motor
- sensor
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Abstract
The utility model provides a position sensorless vector control rare-earth permanent magnet synchronous motor water pump comprising a rare-earth permanent magnet synchronous motor water pump and a position sensorless synchronous motor vector controller. The position sensorless synchronous motor controller is arranged externally, and a position sensorless method is adopted to drive the synchronous motor to operate.
Description
Technical field
The utility model relates to technical field of motors, particularly a kind of synchronous motor water pump system of rare earth permanent magnet position-sensor-free vector control.
Background technique
At present the drive motor of water pump is induction machine mostly, and the small-power induction machine mostly is single-phase, and efficient is low, and specific power is low, and motor is adjusted difficulty, and under the more and more nervous situation of energy supply at present, improving efficiency of motor is a task of top priority.
Summary of the invention
The purpose of this utility model is to overcome the shortcoming of prior art, and a kind of rare earth permanent-magnet synchronization motor water pump of position-sensor-free vector control is provided.
For achieving the above object, the rare earth permanent-magnet synchronization motor water pump of a kind of position-sensor-free vector control that the utility model provides comprises water pump component and is arranged at the synchronous machine of the described water pump component of driving in the water pump, according to the utility model, described synchronous machine is a rare earth permanent-magnet synchronization motor.
Further, also comprise position-sensor-free synchronous machine vector controller, it is electrically connected with described rare earth permanent-magnet synchronization motor.
Preferably, described motor and water pump component comprise: the pump shell of band base, want to cooperate protecgulum and the bonnet that forms housing with the pump shell of this band base, be arranged at the synchronous motor stator in this housing, the rotor that matches with synchronous motor stator, be coupled to the motor shaft of rotor by inner bearing, described motor shaft one end is matched with protecgulum by a silicon carbide outer bearing, the other end is matched with a bearing support by another silicon carbide outer bearing and is installed in the bonnet again, the front end of protecgulum also is provided with the water pump spiral case, be provided with impeller in the water pump spiral case, impeller and motor shaft are to connection.
Preferably, rotor adopts the Ti metal sleeve pipe outward, and with rotor resin embedding, makes rotor have water tightness, and is anticorrosive, and the rotation loss is little in water.
Preferably, the inner carbon fiber stator sleeve pipe that adopts of motor stator guarantees the winding drying, and making it can corrosion.
Preferably, described motor shaft is a titanium alloy material, and it is long, corrosion-resistant to have a life-span, lightweight characteristics.
Further be that described position-sensor-free synchronous machine vector controller comprises: AC power supplies, EMI eliminator, rectification circuit, pfc circuit, flat wave circuit, inverter circuit, voltage sampling circuit, PWM drive circuit, MCU control circuit; Wherein, EMI eliminator and rectification circuit carry out filter rectification to the ac power supply of AC power supplies 801 inputs respectively, the direct current that obtains is given the charging of the flat wave capacitor in the flat wave circuit by pfc circuit again, the MCU control circuit detects the busbar voltage that obtains flat wave circuit by voltage sampling circuit and reaches the trouble free service magnitude of voltage, send the pwm pulse of forcing driving to the PWM drive circuit according to running state, make the electric motor starting operation, and to inverter circuit output three-phase PWM control signal synchronous control mode.
The beneficial effects of the utility model are that motor adopts rare earth permanent-magnetic material, remanent magnetism height, coercivity height, the magnetic energy product height has effectively reduced motor volume, raises the efficiency the specific power height, employing synchronous machine mechanism, torque fluctuations is low, and noise is low, and motor operation vibrations are little.Simultaneously motor adopts high hardness not have cunning dynamic bearing, cooperates the titanium alloy axle, have corrosion-resistant, long lifetime, non-maintaining characteristics.Extensively adopt the epoxy resin embedding in the water pump, the means of seal ring are set, make electric system and water isolation in the water pump, water circulation system is set simultaneously gives the high hardness ceramic slide bearing with lubricated.
Controller adopts the position-sensor-free vector control mode, has cancelled the position signal line, the interference free performance height, and reliable operation connects simple; built-in PFC corrector, power factor height, power utilization rate height, the built-in overload of controller, overvoltage; overcurrent, under-voltage, overheating protection circuit, reliable operation.Adopt the synchronous machine vector control strategy of maximum moment/current ratio, make motor operate in energy-efficient state all the time.
Controller adopts chip microcontroller key operation and Presentation Function.Complete machine and subscriber-related operation are all isolated with high pressure, safe and reliable.Also have speed and currrent feedback function, velocity control accuracy is 1%.The maximum speed of controller is 3000RPM, and minimum speed is 300RPM.Controller uses information such as LCD liquid crystal screen display setting rotating speed, menu, state, and have an external registered permanent residence of using, can use registered permanent residence ROMPaq by this, export the pwm signal corresponding with rotating speed, the output trouble signal, input analogue signal control rotating speed etc., man-machine interface is good, has good expansion, upgrading ability.
Description of drawings
Fig. 1 350W synchronous motor water pump outline drawing
Fig. 2 350W synchronous motor water pump explosive view
Fig. 3 A is a 1500W synchronous motor water pump outline drawing
Fig. 3 B is a 1500W synchronous motor water pump outline drawing
Fig. 4 1500W synchronous motor water pump explosive view
Fig. 5 synchronous motor driver functional block diagram
Embodiment
This synchronous motor water pump comprises water pump component, is arranged at the rare earth permanent-magnet synchronization motor in the water pump component, and the position-sensor-free synchronous machine vector controller that is electrically connected on rare earth permanent-magnet synchronization motor.
With reference to Fig. 1,2,3A, 3B and Fig. 4, water pump component and rare earth permanent-magnet synchronization motor form a complete water pump, and this water pump comprises, the pump shell (8) of band base, the bonnet (12) of protecgulum (11) and rear end.Pump shell matches with the bonnet (12) of protecgulum that is positioned at the pump shell front end (11) and rear end, has defined a cavity jointly, and rare earth permanent-magnet synchronization motor promptly is arranged in this cavity.
Rare earth permanent-magnet synchronization motor comprises synchronous motor stator (1), and with the rotor (2) that motor stator matches, rotor is provided with motor shaft (3), and the motor stator inboard is installed with carbon fiber stator sleeve pipe (4).Motor stator is fixed in the inwall of pump shell (8), and rotor is matched with the bonnet (12) of protecgulum (11) and rear end respectively by inner bearing (5), silicon carbide outer bearing (6) and bearing support (7), thereby makes that rotor can the relative stator rotation.On protecgulum, also be fixed with water pump spiral case (13), cooperate motor shaft (3) to go up fixing impeller (9), make when the rotation meeting impeller of rotor is rotated, can produce eddy current, thereby realize liquid is pumped into and pumps by screw 14.Each parts seam crossing seals with the seal ring 10 of different size.
Described rotor can be by overlapping together a plurality of rotor packs back and motor shaft drive fit, and with rare earth magnetic steel with high temperature anaerobic glue card in the rotor pack surface, use the epoxy resin embedding after the overcoat Ti metal rotor sleeve, and form.Such rotor can guarantee enough mechanical strengths and resistant to rust ability.
Motor stator welds together after can being laminated by stator lasmination, embeds the three phase sine winding, and packs carbon fiber stator sleeve pipe at the middle part and form).Motor stator is packed in the water pump, the rear end bearing seat of packing into, the usable resins embedding guarantees that staor winding and silicon steel plate can corrosions.
On the water pipe coupling shaft bearing and the opening of pump shell, for the front and back sliding bearing provides liquid lubrication.The winding of motor is designed to produce the winding of sinusoidally back-emf, cooperates the sinusoidal voltage of controller, produces to have the moment of very little ripple, reaches to cause good quiet effect.
With reference to Fig. 5; described position-sensor-free synchronous machine vector controller comprises: exchange (AC) power supply (801); electromagnetic interference (EMI) eliminator (802); rectification circuit (803); PFC (PFC) circuit (804); flat wave circuit (805); inverter circuit (806); input current testing circuit (807), PFC over-current protection circuit (808), voltage sampling circuit (809); over-current detection circuit (810); PWM drive circuit (811), output current sample circuit (812), external interface circuit (813); radiator stable detection circuit (814); by key control and display circuit (815), fault-detecting circuit (816), MCU control circuit (817).
Wherein, EMI eliminator 802 and rectification circuit 803 carry out filter rectification to alternating current 220V (110V) power supply of AC power supplies 801 inputs respectively, and the direct current that obtains is given the charging of the flat wave capacitor in the flat wave circuit 805 by pfc circuit 804 again.Pfc circuit 804 mainly is made up of energy storage inductor, booster diode and power switch pipe.MCU control circuit 817 detects the busbar voltage that obtains flat wave circuit (805) by voltage sampling circuit (809) and reaches the trouble free service magnitude of voltage, send the pwm pulse of forcing driving to PWM drive circuit (811) according to running state, make the electric motor starting operation, when electric current that detects when output current sample circuit (812) and water pump actual speed can be calculated the threephase switch dutycycle and make pump working at the synchronous machine state by vector, automatically change over to by sampling output biphase current and VDC, calculate pump rotary speed in real time, adopt the control mode of peak torque/every Ampere currents to calculate output voltage vector and calculate the threephase switch dutycycle, at last to inverter circuit (806) output three-phase PWM control signal synchronous control mode.
This controller adopts the switching frequency about 20kHz.Can follow input voltage waveform in real time by PFC drive circuit 811 control input currents, reach input power factor near 1.And flat wave capacitor voltage maintained a stable desired value.
The major control function of controller is realized by MCU governor circuit 817 and peripheral circuit.Control circuit comprises PFC over-current protection circuit (808); voltage sampling circuit (809); over-current detection circuit (810); output current sample circuit (812); external interface circuit (813); radiator stable detection circuit (814), by key control and display circuit (815), fault-detecting circuit (816).Realized overcurrent, overload, overvoltage, protective function such as under-voltage, overheated, the permagnetic synchronous motor vector control function of position-sensor-free regularly is provided with function, rotating speed automatic cruising function and the anhydrous protective function of water pump etc.And provide the external analog input that rotating speed, pulse output speed signal, software upgrading port, fault warning contact and 485 communication interfaces are set.Realized good man machine operation interface by LCD display and easy menu operation.
The built-in PFC corrector of controller can make power-efficient reach 0.99.It is the main control chip that driver adopts single-chip microcomputer, and the IPM module is partly adopted in inversion.Have Speedless sensor and detect electromotor velocity, no water conservation, regularly setting, functions such as automatic cruising, and possess overload, overcurrent, overvoltage, protective function such as under-voltage, overheated.Driver adopts chip microcontroller key operation and Presentation Function.Complete machine and subscriber-related operation are all isolated with high pressure.Design meets the CE authentication requesting fully.Realized safety protection to the people.Driver has speed and currrent feedback function, and velocity control accuracy is 1%.The maximum speed of driver is 3000RPM, and minimum speed is 300RPM.Driver uses information such as LCD liquid crystal screen display setting rotating speed, menu, state.Driver has the external registered permanent residence of using, and can use registered permanent residence ROMPaq by this, exports the pwm signal corresponding with rotating speed, output trouble signal, input analogue signal control rotating speed etc.Driver adopts the vector control strategy of maximum moment/current ratio, makes motor operate in efficient state all the time.
Claims (8)
1. the rare earth permanent-magnet synchronization motor water pump of a position-sensor-free vector control, it comprises water pump component and is arranged at the synchronous machine of the described water pump component of driving in the water pump that it is characterized in that: described synchronous machine is a rare earth permanent-magnet synchronization motor; Also comprise position-sensor-free synchronous machine vector controller, it is electrically connected with described rare earth permanent-magnet synchronization motor.
2. the rare earth permanent-magnet synchronization motor water pump of a kind of position-sensor-free vector control according to claim 1, it is characterized in that: described motor and water pump component comprise: the pump shell of band base, want to cooperate protecgulum and the bonnet that forms housing with the pump shell of this band base, be arranged at the synchronous motor stator in this housing, the rotor that matches with synchronous motor stator, be coupled to the motor shaft of rotor by inner bearing, described motor shaft one end is matched with protecgulum by a silicon carbide outer bearing, the other end is matched with a bearing support by another silicon carbide outer bearing and is installed in the bonnet again, the front end of protecgulum also is provided with the water pump spiral case, be provided with impeller in the water pump spiral case, impeller and motor shaft are to connection.
3. the rare earth permanent-magnet synchronization motor water pump of a kind of position-sensor-free vector control according to claim 2 is characterized in that: rotor adopts the Ti metal sleeve pipe outward, rotor resin embedding.
4. the rare earth permanent-magnet synchronization motor water pump of a kind of position-sensor-free vector control according to claim 3 is characterized in that: the inner carbon fiber stator sleeve pipe that adopts of motor stator.
5. the rare earth permanent-magnet synchronization motor water pump of a kind of position-sensor-free vector control according to claim 4 is characterized in that: described motor shaft is a titanium alloy material.
6. the rare earth permanent-magnet synchronization motor water pump of a kind of position-sensor-free vector control according to claim 1, it is characterized in that: described position-sensor-free synchronous machine vector controller comprises: AC power supplies, the EMI eliminator, rectification circuit, pfc circuit, flat wave circuit, inverter circuit, voltage sampling circuit, PWM drive circuit, MCU control circuit; Wherein, EMI eliminator and rectification circuit carry out filter rectification to the ac power supply of AC power supplies 801 inputs respectively, the direct current that obtains is given the charging of the flat wave capacitor in the flat wave circuit by pfc circuit again, the MCU control circuit detects the busbar voltage that obtains flat wave circuit by voltage sampling circuit and reaches the trouble free service magnitude of voltage, send the pwm pulse of forcing driving to the PWM drive circuit according to running state, make the electric motor starting operation, and to inverter circuit output three-phase PWM control signal synchronous control mode.
7. the rare earth permanent-magnet synchronization motor water pump of a kind of position-sensor-free vector control according to claim 1 is characterized in that: it is the main control chip that the MCU control circuit adopts single-chip microcomputer, and inverter circuit adopts the IPM module.
8. the position-sensor-free synchronous machine vector controller according to claim 7 is characterized in that: also comprise being electrically connected on the MCU control circuit by key control and display circuit with by key control and display circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201451309U CN201474993U (en) | 2009-03-09 | 2009-03-09 | Position sensorless vector control rare-earth permanent magnet synchronous motor water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201451309U CN201474993U (en) | 2009-03-09 | 2009-03-09 | Position sensorless vector control rare-earth permanent magnet synchronous motor water pump |
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| Publication Number | Publication Date |
|---|---|
| CN201474993U true CN201474993U (en) | 2010-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009201451309U Expired - Fee Related CN201474993U (en) | 2009-03-09 | 2009-03-09 | Position sensorless vector control rare-earth permanent magnet synchronous motor water pump |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102118129A (en) * | 2011-03-31 | 2011-07-06 | 山东胜开动力科技有限公司 | Permanent magnetic variable-speed motor |
| CN104467296A (en) * | 2014-11-28 | 2015-03-25 | 卧龙电气集团股份有限公司 | Integrated variable frequency motor |
| CN106593842A (en) * | 2016-12-29 | 2017-04-26 | 上海新时达电气股份有限公司 | Water pump driving method and device |
| CN107630822A (en) * | 2017-11-08 | 2018-01-26 | 浙江东音泵业股份有限公司 | A kind of permagnetic synchronous motor solar energy water pumping system and control method |
-
2009
- 2009-03-09 CN CN2009201451309U patent/CN201474993U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102118129A (en) * | 2011-03-31 | 2011-07-06 | 山东胜开动力科技有限公司 | Permanent magnetic variable-speed motor |
| CN104467296A (en) * | 2014-11-28 | 2015-03-25 | 卧龙电气集团股份有限公司 | Integrated variable frequency motor |
| CN106593842A (en) * | 2016-12-29 | 2017-04-26 | 上海新时达电气股份有限公司 | Water pump driving method and device |
| CN107630822A (en) * | 2017-11-08 | 2018-01-26 | 浙江东音泵业股份有限公司 | A kind of permagnetic synchronous motor solar energy water pumping system and control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100519 Termination date: 20140309 |