CN109889006A - A kind of PM Square Wave motor direct driving formula intelligent speed-regulating stirred tank transmission device - Google Patents
A kind of PM Square Wave motor direct driving formula intelligent speed-regulating stirred tank transmission device Download PDFInfo
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- CN109889006A CN109889006A CN201910231031.0A CN201910231031A CN109889006A CN 109889006 A CN109889006 A CN 109889006A CN 201910231031 A CN201910231031 A CN 201910231031A CN 109889006 A CN109889006 A CN 109889006A
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Abstract
A kind of PM Square Wave motor direct driving formula intelligent speed-regulating stirred tank transmission device, it is related to a kind of transmission device, including six-phase permanent-magnet square-wave motor and controller, shaft coupling, connecting flange, PM Square Wave motor includes motor shaft, rotor assembly, stator module, rear end cap, drive end bearing bracket, position sensor, shell；The PM Square Wave motor stator winding uses three-phase or polyphase windings, such as six phase windings, and two groups of three-phase windings U, V, W and R, S, T are respectively independent, corresponds to winding in space and differs 300E；The winding star-like connection of six-phase permanent-magnet square-wave motor, rotor magnetic steel surface-mount type bonding.The invention discloses a kind of PM Square Wave motor direct driving formula intelligent speed-regulating stirred tank transmission devices, cancel the speed reducer on traditional agitating device, solve the technique requirement of stirred tank low-speed big, especially in pharmacy and food service industry, the generation of oil leakage phenomenon can thoroughly be eradicated, maintenance maintenance is reduced, is improved efficiency.
Description
Technical field
The present invention relates to the transmission devices of stirred tank, specifically use current waveform for the permanent magnet motor of pure square wave, directly
Drive the stirred tank transmission device of intelligent speed-regulating.
Background technique
Traditional stirred tank transmission system using asynchronous motor, speed reducer by power be transmitted to gear, belt pulley or in
Heart connecting rod drives equipment rotation, since whipping process majority is all run in low-speed big state, so general all can be using electricity
The dynamical system of machine acceleration and deceleration machine composition, the kind of drive of the system it is apparent the disadvantage is that: motor and speed reducer links together,
Increase the height of high agitation kettle；Speed reducer is easy oil leak, permeability, the pollution especially generated in pharmaceutical industry, food service industry,
It can lead to a variety of serious diseases to occur, there are security risks；Drive-train efficiency is low, and energy consumption is high, starts unstable, heavy load starting
It is difficult；Daily maintenance and replacement to components such as retarder, belt pulleys is very frequent, and repair apparatus also needs mating maintenance driving system
System, structure is complicated, and maintenance capacity is big, and particularly with sterilization pharmaceutical production workshop, every time after maintenance, Yao Chongxin does sterilization and disappears
Poison, brought additional work amount are extremely huge.
Part mixing plant uses medium-sized magneto, such as permanent magnet synchronous motor or permanent magnetic brushless, but
It is the operating condition for being difficult to meet low-speed big, causes motor volume excessive, is easy fever.Therefore the present invention provides a kind of permanent magnetism
Square-wave motor, current waveform are pure square wave, can effectively solve the problem that the above problem.
Summary of the invention
The purpose of the present invention is to provide a kind of PM Square Wave motor direct driving formula intelligent speed-regulating stirred tank transmission devices, originally
Device takes straight drive mode, cancels speed reducer, fundamentally solves this pollution sources of leakage of oil.Phase current waveform of the present invention reaches
Theoretical pure square wave, the electromagnetic torque that motor can be made to export is more steady, reduces torque pulsation and noise, improves the work of motor
Efficiency；Voltage utilization is high, relative to traditional waveform control strategy more power saving,
The invention provides the following technical scheme:
A kind of PM Square Wave motor direct driving formula intelligent speed-regulating stirred tank transmission device, the transmission device include PM Square Wave electricity
Machine and intelligent controller, shaft coupling, connecting flange, stirring flabellum；PM Square Wave motor includes motor shaft, rotor assembly, stator
Component, rear end cap, drive end bearing bracket, position sensor, shell；PM Square Wave motor stator winding uses three-phase or polyphase windings, such as
When six phase windings, two groups of three-phase windings U, V, W and R, S, T are respectively independent, correspond to winding in space and differ 300E；Six-phase permanent-magnet
The winding star-like connection of square-wave motor, rotor magnetic steel surface-mount type bonding；One layer of red copper foil of magnet steel appearance face paste, outside red copper foil again
Tightly around one layer of stainless steel fixation with steel wire；Its driving device includes unsteady flow module, six phase switching modules；Controller passes through detection motor
Rotor-position and machine winding current, as unsteady flow module provide pwm signal, and according to detection rotor speed,
And then switch control signal is generated to drive three, six phase switching modules；Unsteady flow module includes a DC power supply and two inverters, inverse
Become device to be made of two inverters and connecing, each inverter is all made of Three-phase full-bridge inverter circuit, wherein on each bridge arm
It is composed in series and one diode of each power switch tube inverse parallel there are two power switch tube；The direct current of each inverter
Side is connect with DC power supply, and exchange side is connected with corresponding threephase stator winding；Thirdly, six phase switching module packets
The inverter for including two and connecing, and be connected to two and connect the D.C. contactor between inverter；Each inverter is corresponding
A set of corresponding motor stator winding.
A kind of PM Square Wave motor direct driving formula intelligent speed-regulating stirred tank transmission device, the controller according to
Lower control strategy generates switching signal and drives three, six phase switching modules, and motor is worked with six phase windings, and rotor revolving speed is through adding
Speed reaches rated speed, and the switching signal that D.C. contactor receives controller sending remains off, and motor is by six Xiang Yun
Row is switched to three-phase operation state.
A kind of PM Square Wave motor direct driving formula intelligent speed-regulating stirred tank transmission device, the motor with three-phase around
Group work, rotor revolving speed reach rated speed through slowing down, and D.C. contactor is received after controller issues signal and is closed, electricity
Machine is switched to six phase operating statuses by three-phase operation state.
A kind of PM Square Wave motor direct driving formula intelligent speed-regulating stirred tank transmission device, the controller pass through inspection
Controller carries out inter-process and generates control signal after surveying external signal, since six phase square-wave motor control systems include direct current
Bus, inverter, controller, position sensor；Wherein, controller uses a kind of control strategy for six phase square-wave motors,
I.e. given current follow-up control；The given value of current signal detected according to external circuit is believed with machine winding feedback current is detected
The pwm signal for generating switching signal, and generating with controller through detection position sensor signal of number making comparisons is used inverse jointly
Become on device, ultimately generates square wave current and be applied to the every phase winding of motor.
A kind of PM Square Wave motor direct driving formula intelligent speed-regulating stirred tank transmission device, the motor and controller
For six phases or 3*n phase, n=1.2.3.4.
The advantages and effects of the present invention are:
1. PM Square Wave motor can play its slow-speed of revolution, big torsion with its high-energy density, high efficiency advantage, Multiple coil operation
The inherent advantage of square takes straight drive mode, cancels speed reducer, fundamentally solves this pollution sources of leakage of oil.
2. phase current waveform of the present invention reaches theoretical pure square wave, the electromagnetic torque that motor can be made to export is more steady, drop
Low torque ripple and noise improve the working efficiency of motor；Voltage utilization is high, more saves relative to traditional waveform control strategy
Electricity, energy saving of system reach 20% or so, and PM Square Wave motor uses high-performance rare-earth NdFeB material, and motor body efficiency is very
Height, and it is small in size, it is light-weight, it is controlled by intelligent controller, high efficient district range is especially wide.
3. motor can run work in six phases, also can be in three-phase operation state；It can solve current magneto low speed output
The problem of torque is small and pulses, can improve motor output torque under the same conditions, improve output power of motor density.
4. the present invention is outside one layer of red copper foil of motor rotor magnetic steel appearance face paste, red copper foil again tightly around one layer of stainless steel steel
Silk is fixed.Very good solution motor magnet steel heat dissipation problem in the running.Magnet steel is avoided to demagnetize due to overheat.
5. maintenance capacity reduces 90% or more, PM Square Wave motor is substantially non-maintaining, especially sterile workshop and inflammable and explosive vehicle
Between, reduce a large amount of maintenances, maintenance, replacement, speed reducer oiling, cleaning.
6. intelligent control reduction recruitment quantity, reduction labor intensity, intelligent control, automatic running, after debugging is good, substantially
Without manual control.
7. substantially reducing noise, improve working environment, noise is lower than 60 decibels, without other pollution sources.
Detailed description of the invention
Fig. 1 is that brushless, permanently square wave of the present invention directly drives agitating device embodiment schematic diagram；
Fig. 2 PM Square Wave electric machine structure figure of the present invention；
The topological structure schematic diagram of Fig. 3 control system of the present invention；
Fig. 4 Conventional permanent magnet square-wave motor opposite potential flat-top width waveform diagram (correlation technique)；
Fig. 5 Conventional permanent magnet square-wave motor phase current waveform figure (correlation technique)；
Fig. 6 six phase square wave permanent magnetic machine winding spatial distribution maps of the present invention；
Fig. 7 set point current follow-up control method phase current waveform figure of the present invention；
Fig. 8 six phase square wave permanent magnetic motor rotor construction figures of the present invention；
T in Fig. 9 given current follow-up control method of the present invention1And T6Motor when conducting；
T in Figure 10 given current follow-up control method of the present invention1Conducting, T6Current flowing road in motor stator when shutdown
Diameter schematic diagram；
Structural schematic diagram when motor is worked in Figure 11 present invention with six phase operating statuses；
Figure 12 is square-wave motor in the present invention with phase current waveform schematic diagram in winding when the work of six phase operating statuses；
Figure 13 is that square-wave motor is switched to after three-phase operation state phase current waveform in group by six phase operating statuses in the present invention
Schematic diagram；
Structural schematic diagram when motor is in Figure 14 present invention with three-phase operation work status；
Figure 15 six-phase permanent-magnet square-wave motor opposite potential flat-top width waveform diagram of the present invention.
Component in figure: motor shaft 1, rotor assembly 2, red copper foil 3, magnet steel 4, steel wire 5, rear end cap 6, position sensor 7, preceding
End cap 8, shell 9, stator module 10, PM Square Wave direct driving motor 11, rack and motor abutted flange 12, tank body 13, agitating paddle
14, rack axis stretch fixing bolt 18 under ring flange 15, motor-shaft extending ring flange 16, rack 17, rack and abutted flange, motor with
Fixing bolt 19 on abutted flange.
Specific embodiment
A kind of PM Square Wave motor direct driving intelligent speed-regulating stirred tank transmission device of the present invention, including PM Square Wave motor,
PM Square Wave intelligent motor controller, shaft coupling, connecting flange stir flabellum, and the PM Square Wave direct driving motor is fixedly mounted
On the rack, affiliated stirring flabellum is mounted on shaft coupling by rack connecting flange, and biography is equipped on the connecting flange
Sensor, the PM Square Wave motor connect intelligent controller by conducting wire.The present invention controls PM Square Wave by intelligent controller
Motor directly drives the medium in stirring flabellum agitator tank, the parameter of agitated medium, data feedback is detected by tank inner sensor
It to intelligent controller, controls PM Square Wave intelligent motor and adjusts the speed and realize Optimal Control, to realize efficient, energy-efficient work effect
Fruit, with low noise, non-maintaining, detent torque is big, output torque is big, run smoothly, controls accurately effect.PM Square Wave electricity
Machine and intelligence control system, including PM Square Wave motor controller and driving device；PM Square Wave motor includes motor shaft, is turned
Sub-component, stator module, rear end cap, drive end bearing bracket, position sensor, shell；Its driving device includes unsteady flow module, multiphase switching
Module；Controller provides pwm signal by detection motor rotor position and machine winding current, as unsteady flow module, and
According to the speed of detection rotor, and then switch control signal is generated to drive three-phase, multiphase switching module；Unsteady flow module packet
Include a DC power supply and two inverters, inverter is made of two inverters and connecing, and each inverter is all made of Three-phase full-bridge
Inverter circuit is wherein composed in series and each power switch tube inverse parallel one on each bridge arm there are two power switch tube
A diode；The DC side of each inverter is connect with DC power supply, exchange side with corresponding threephase stator winding
It is connected；Its three-phase, multiphase switching module include two and the inverter that connects, and are connected to two and connect straight between inverter
Flow contactor；Each inverter corresponds to a set of corresponding motor stator winding.PM Square Wave electric machine control system, controller
Inter-process is carried out by controller after detection external signal and generates control signal, and control system includes DC bus, inversion
Device, controller, position sensor；Wherein, controller uses a kind of control strategy for multiphase square-wave motor, i.e., to constant current
Tracing control；The given value of current signal detected according to external circuit is made comparisons production with machine winding fed-back current signals are detected
Raw switching signal, and the pwm signal generated with controller through detection position sensor signal is used on inverter jointly, finally
It generates square wave current and is applied to the every phase winding of motor, controller is six phases or 3*n phase, n=1.2.3.4.
Electric machine structure is shown in that Fig. 2 includes motor shaft 1,2 stator module 10 of rotor assembly, rear end cap 6, drive end bearing bracket 8, position sensing
Device 7, shell 9 etc..It is characterized in that rotor assembly cooling system is shown in Fig. 8.Motor rotor magnetic steel 4, structure is set by magnetic circuit
Motor rotor magnetic steel 4 is surface-mount type bonding by meter, spy.Magnet steel 4, one layer of red copper foil 3 of appearance face paste, outside red copper foil 3 again tightly around
One layer of stainless steel steel wire 5 is fixed.Solve motor magnet steel heat dissipation problem in the running.
Controller is using given current follow-up control method.A given value is generated by controller in the control method, and
It is compared with the electric machine phase current that feedback current-detects, if feedback current is less than to timing, the PWM of generation is applied to IGBT
On make its constant conduction；If feedback current is greater than to timing, the PWM of generation is applied on IGBT and turns it off；With this continuously into
Row goes down, and the phase current follow current in motor stator winding can be made given.Reach square wave current control and sees Fig. 7.
PM Square Wave electric machine control system includes controller and driving device.The driving device of the control system feature includes
Unsteady flow module, for providing AC energy for PM Square Wave machine winding；Wherein six phase switching module, for selecting six-phase motor
The operating status of winding；
Controller provides pwm signal, Yi Jigen by detection motor rotor position and machine winding current, as unsteady flow module
According to the speed of detection rotor, and then switch control signal is generated to drive three, six phase switching modules.
Unsteady flow module includes a DC power supply and two inverters, and inverter is made of two inverters and connecing, each inverse
Become device and be all made of Three-phase full-bridge inverter circuit, is wherein composed in series and each on each bridge arm there are two power switch tube
Power switch tube all one diodes of inverse parallel;The DC side of each inverter is connect with DC power supply, and exchange side is and respectively
Self-corresponding threephase stator winding is connected.
Brushless, permanently square wave directly drives stirring system connection
The connection of PM Square Wave motor and stirring be motor cabinet on the rack, there is an abutted flange in centre, and ring flange is added
Purpose is to meet identical motor and be applicable in different racks.Rack is fixed on tank, and stirring is fixed by rack, with motor
Connection, specific connection are as follows:
PM Square Wave End cover for motor seam allowance 1 is docked with 2 upper end seam allowance of abutted flange, is connected with fixing bolt 9.
2 lower end seam allowance of abutted flange is docked with 7 upper surface seam allowance of rack, is connected with lower fixing bolt 8.
The equal external threading hole in 2 upper and lower end face of abutted flange, connect with lower fixing bolt 8, upper fixing bolt 9.
Motor-shaft extending ring flange 6 is connected with rack ring flange 5；
The kind of drive: electric machine controller requires to be adjusted to suitable rotational speed, control PM Square Wave motor rotation, motor according to technique
Flange drives agitating paddle 4 to rotate by rack flange, reaches stirring purpose.
Claims (5)
1. a kind of PM Square Wave motor direct driving formula intelligent speed-regulating stirred tank transmission device, which is characterized in that the transmission device
Including PM Square Wave motor and intelligent controller, shaft coupling, connecting flange, stirring flabellum；PM Square Wave motor include motor shaft,
Rotor assembly, stator module, rear end cap, drive end bearing bracket, position sensor, shell；PM Square Wave motor stator winding uses three-phase
Or when polyphase windings, such as six phase windings, two groups of three-phase windings U, V, W and R, S, T are respectively independent, correspond to winding and differ in space
300E；The winding star-like connection of six-phase permanent-magnet square-wave motor, rotor magnetic steel surface-mount type bonding；One layer of red copper of magnet steel appearance face paste
Foil, again tightly around one layer of stainless steel fixation with steel wire outside red copper foil；Its driving device includes unsteady flow module, six phase switching modules；Control
Device processed provides pwm signal by detection motor rotor position and machine winding current, as unsteady flow module, and according to detection
The speed of rotor, and then switch control signal is generated to drive three, six phase switching modules；Unsteady flow module includes a direct current
Source and two inverters, inverter are made of two inverters and connecing, and each inverter is all made of Three-phase full-bridge inverter circuit,
In be composed in series there are two power switch tube on each bridge arm and one diode of each power switch tube inverse parallel；Often
The DC side of a inverter is connect with DC power supply, and exchange side is connected with corresponding threephase stator winding；Thirdly,
Six phase switching modules include two and the inverter that connects, and are connected to two and connect the D.C. contactor between inverter；It is each
A inverter corresponds to a set of corresponding motor stator winding.
2. a kind of PM Square Wave motor direct driving formula intelligent speed-regulating stirred tank transmission device according to claim 1, special
Sign is, the controller generates switching signal according to following control strategy and drives three, six phase switching modules, motor with six phases around
Group work, rotor revolving speed are accelerated to rated speed, and the switching signal that D.C. contactor receives controller sending is protected
Off-state is held, motor is switched to three-phase operation state by the operation of six phases.
3. a kind of PM Square Wave motor direct driving formula intelligent speed-regulating stirred tank transmission device according to claim 1, special
Sign is that the motor is worked with three-phase windings, and rotor revolving speed reaches rated speed through slowing down, and D.C. contactor receives
Controller is closed after issuing signal, and motor is switched to six phase operating statuses by three-phase operation state.
4. a kind of PM Square Wave motor direct driving formula intelligent speed-regulating stirred tank transmission device according to claim 1, special
Sign is that the controller carries out inter-process by controller after detection external signal and generates control signal, due to six phases
Square-wave motor control system includes DC bus, inverter, controller, position sensor；Wherein, controller is directed to using one kind
The control strategy of six phase square-wave motors, i.e., given current follow-up control；The given value of current signal detected according to external circuit with
It detects that machine winding fed-back current signals are made comparisons and generates switching signal, and produced with controller through detection position sensor signal
Raw pwm signal is used on inverter jointly, is ultimately generated square wave current and is applied to the every phase winding of motor.
5. a kind of PM Square Wave motor direct driving formula intelligent speed-regulating stirred tank transmission device according to claim 1, special
Sign is that the motor is six phases or 3*n phase, n=1.2.3.4 with controller.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910231031.0A CN109889006A (en) | 2019-03-26 | 2019-03-26 | A kind of PM Square Wave motor direct driving formula intelligent speed-regulating stirred tank transmission device |
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| CN201910231031.0A CN109889006A (en) | 2019-03-26 | 2019-03-26 | A kind of PM Square Wave motor direct driving formula intelligent speed-regulating stirred tank transmission device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112078472A (en) * | 2020-10-16 | 2020-12-15 | 芜湖瑞来电子科技有限公司 | Cement transport vehicle stirring system and control method thereof |
| US11799411B2 (en) | 2021-08-31 | 2023-10-24 | Kinetic Technologies International Holdings Lp | Multi-phase permanent magnet rotor motor with independent phase coil windings |
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| CN201565273U (en) * | 2009-12-02 | 2010-09-01 | 上海化工研究院 | Magnetic stirring reaction kettle |
| CN106179023A (en) * | 2016-08-30 | 2016-12-07 | 伊泽瑞尔(大连)科技有限公司 | A kind of horizontal intelligent permanent magnet straight drive variable-frequency control agitating device |
| CN106936361A (en) * | 2017-04-18 | 2017-07-07 | 沈阳永磁电机制造有限公司 | A kind of pure square-wave motor control system of multi-phase permanent |
| CN206631494U (en) * | 2017-03-16 | 2017-11-14 | 浙江永立环保股份有限公司 | A kind of adjustable high-efficiency mixer |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201565273U (en) * | 2009-12-02 | 2010-09-01 | 上海化工研究院 | Magnetic stirring reaction kettle |
| CN106179023A (en) * | 2016-08-30 | 2016-12-07 | 伊泽瑞尔(大连)科技有限公司 | A kind of horizontal intelligent permanent magnet straight drive variable-frequency control agitating device |
| CN206631494U (en) * | 2017-03-16 | 2017-11-14 | 浙江永立环保股份有限公司 | A kind of adjustable high-efficiency mixer |
| CN106936361A (en) * | 2017-04-18 | 2017-07-07 | 沈阳永磁电机制造有限公司 | A kind of pure square-wave motor control system of multi-phase permanent |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112078472A (en) * | 2020-10-16 | 2020-12-15 | 芜湖瑞来电子科技有限公司 | Cement transport vehicle stirring system and control method thereof |
| US11799411B2 (en) | 2021-08-31 | 2023-10-24 | Kinetic Technologies International Holdings Lp | Multi-phase permanent magnet rotor motor with independent phase coil windings |
| TWI823521B (en) * | 2021-08-31 | 2023-11-21 | 加拿大商芯凱電子科技國際控股有限合夥公司 | Multi-phase permanent magnet rotor motors and close-loop methods thereof |
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