CN103560056B - Primary cut-out is brushless coil excitation direct current machine operating mechanism - Google Patents
Primary cut-out is brushless coil excitation direct current machine operating mechanism Download PDFInfo
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Abstract
A kind of primary cut-out brushless coil excitation direct current machine operating mechanism, belongs to high-voltage breaker operation mechanism technical field.The present invention includes brushless coil excitation direct current machine, transmission mechanism, primary cut-out and motor servo controller, transmission mechanism is made up of rotating shaft, connecting lever and pull bar; Brushless coil excitation direct current machine comprises casing, is provided with electric machine main shaft and two groups of stator and rotor salient pole devices in casing; The electric machine main shaft of brushless coil excitation direct current machine is fixedly connected with rotating shaft by ring flange, and one end and the rotating shaft of connecting lever are hinged, and one end of the pull bar of the other end and transmission mechanism is hinged, and the other end of pull bar is fixedly connected with the moving contact of primary cut-out; Motor servo controller comprises central processing unit, capacitor energy-storage units, photoelectric coupling module, signal amplitude modular converter, IGBT drive module, the first IGBT module, the second IGBT module, DC power supplier, divide-shut brake signal capture module, communication module and computer.
Description
Technical field
The invention belongs to high-voltage breaker operation mechanism technical field, particularly relate to a kind of primary cut-out brushless coil excitation direct current machine operating mechanism.This operating mechanism can effectively improve Driving Torque, widens divide-shut brake speed, strengthen steady operation performance; Be applicable to the intellectualized operation of circuit breaker.
Background technology
Primary cut-out is the most complicated most important switchgear in electric power system, and it plays the effect of control and protection to the operation of electricity net safety stable.Operating mechanism is as the important part of primary cut-out, and it plays the effect driving moving contact in high voltage breaker to carry out divide-shut brake, and the excellent of operating mechanism service behaviour directly has influence on the operation that can circuit breaker normally realize divide-shut brake fast.Permanent-magnet brushless DC electric machine (PMBLDCM) operating mechanism overcomes the shortcomings such as traditional operating mechanism such as hydraulic pressure and spring parts are many, complicated mechanism, motion process are uncontrollable, embodies the feature that transmission is simple, be easy to realize control in conjunction with power electronic technology.And PMBLDCM rotor permanent magnet exists that intrinsic defect makes that motor cost rises, permanent magnet flux uncontrollablely causes limited invariable power scope and limited speed adjustable range, permanent magnet can be caused high speed performance to decline by large reverse magnetomotive force and high temperature demagnetization, the mechanical strength of assembling between rotor yoke and permanent magnet; These shortcomings limit the application of permanent-magnet brushless DC electric machine operating mechanism at high-voltage breaker operation mechanism to a certain extent.
Summary of the invention
For prior art Problems existing, the invention provides a kind of primary cut-out brushless coil excitation direct current machine operating mechanism.This operating mechanism utilizes magnetizing coil to replace permanent magnet excitation, by regulating the direct current increase and decrease air gap flux density by magnetizing coil, obtaining the regulation and control of wide region air-gap flux realization to permanent magnet flux, and then obtaining large Driving Torque, wide-range-timing; Meanwhile, the risk of demagnetizing without permanent magnet adds stability and the reliability of this operating mechanism service behaviour.
To achieve these goals, the present invention adopts following technical scheme, a kind of primary cut-out brushless coil excitation direct current machine operating mechanism, comprise brushless coil excitation direct current machine, transmission mechanism, primary cut-out and motor servo controller, described transmission mechanism is made up of rotating shaft, connecting lever and pull bar;
Described brushless coil excitation direct current machine, comprises casing, is provided with electric machine main shaft and two groups of stator and rotor salient pole devices in casing, and the arranged in parallel and full symmetric of two groups of stator and rotor salient pole devices is in the middle vertical planes of electric machine main shaft; Described stator and rotor salient pole device is made up of stator core and rotor core, described electric machine main shaft and casing are coaxially arranged, described stator core is fixed on the madial wall of casing, and rotor core is fixed on electric machine main shaft, leaves air gap between described stator core and rotor core; Electric machine main shaft between described two groups of stator and rotor salient pole devices is fixedly installed reel, in reel, is wound with magnetizing coil; Described stator core is provided with groove, in groove, is wound with armature winding, described casing and electric machine main shaft adopt permeability magnetic material;
The electric machine main shaft of described brushless coil excitation direct current machine is fixedly connected with the rotating shaft of transmission mechanism by ring flange, one end and the rotating shaft of the connecting lever of transmission mechanism are hinged, one end of the pull bar of the other end and transmission mechanism is hinged, and the other end of pull bar is fixedly connected with the moving contact of primary cut-out;
Described motor servo controller, comprises central processing unit, capacitor energy-storage units, photoelectric coupling module, signal amplitude modular converter, IGBT drive module, the first IGBT module, the second IGBT module, DC power supplier, divide-shut brake signal capture module, communication module and computer; Described central processing unit is connected with computer through communication module, described divide-shut brake signal capture module comprises separating brake instruction button, reclosing command button and coincidence instruction button, and the output of described divide-shut brake signal capture module is connected with the input of central processing unit; The signal output part of position signalling transducer be arranged on motor case is connected with the input of central processing unit, and the current transformer be connected with motor threephase armature winding is connected with the input of central processing unit respectively; The PWM signal generation unit of central processing unit is connected with the input of IGBT drive module through signal amplitude modular converter, photoelectric coupling module successively, and the output of IGBT drive module is connected with the drive end of the first IGBT module with the second IGBT module respectively; Capacitor energy-storage units is connected with the threephase armature winding of motor through the first IGBT module, magnetizing coil and the magnetizing coil power sources in series of the second IGBT module and motor are connected, and the current transformer be arranged in the series loop of motor magnetizing coil is connected with the input of central processing unit; Described DC power supplier provides working power for motor servo controller;
The present invention is also provided with position signalling transducer, angular displacement sensor and torque sensor; Described position signalling transducer is arranged on casing, and angular displacement sensor is arranged on electric machine main shaft, and torque sensor is arranged between electric machine main shaft and ring flange.
Described electric machine main shaft is arranged in casing by end cap, between electric machine main shaft and end cap, be provided with bearing.
Described armature winding adopts individual layer to concentrate the arrangement mode of whole distance.
Beneficial effect of the present invention:
1. the present invention adopts energization excitation coil to replace the permanent magnet in permanent magnet DC motor to carry out excitation, stator core and rotor core adopt salient pole type structure, direct current by controlling to pass through in magnetizing coil regulates the working gas gap magnetic of motor close, reach raising Driving Torque so that air-gap flux is controllable, widen the object of velocity interval; Compare common permanent magnet DC motor, this structure makes the traffic coverage of motor become large, and scope and the power bracket of speed governing are wider, and then the electric pressure that operating mechanism is applied is higher; This operating mechanism can meet more than 126kV and require and operating work (>4kJ) requirement to the peak value opening velocity (6 ~ 10m/s) of superhigh pressure and ultra high voltage grade circuit breaker;
2. direct current machine of the present invention can not only produce the electromagnetic torque being approximated to direct ratio with the field supply providing brush direct current series motor characteristic, and can produce and the reluctance torque providing the phase current of switched reluctance machines characteristic to be approximated to direct ratio; The rotatable winding of irrotationality and it can be made to work in high engine speed range and high temperature occasion without the rotor core salient pole type structure of permanent magnet, eliminate the restriction of permanent magnetic material characteristic, risk of demagnetizing without permanent magnet, improve the performance of this operating mechanism steady operation, and motor cost reduces; The reluctance torque producing the saliency generation of electromagnetic torque and rotor has that moment of inertia is little, start-up time is short and the advantage such as Driving Torque is large, meets the requirement of circuit-breaker switching on-off operating time very well;
3. the present invention achieves the control to current of electric and magnetizing coil simultaneously, provides technical support for this motor realizes speed governing on a large scale.
Accompanying drawing explanation
Fig. 1 is the structural representation of primary cut-out of the present invention brushless coil excitation direct current machine operating mechanism;
Fig. 2 is the structural representation of brushless coil excitation direct current machine of the present invention;
Fig. 3 is the A-A cutaway view of Fig. 2;
Fig. 4 is the magnetic flux path schematic diagram of brushless coil excitation direct current machine of the present invention;
Fig. 5 is the schematic block circuit diagram of motor servo controller of the present invention;
Fig. 6 is the circuit theory diagrams of motor servo controller of the present invention;
Fig. 7 is spring load characteristic comparison diagram when operating mechanism in embodiments of the invention closes a floodgate when the driving force specislity that provides and vacuum high-pressure breaker closing;
Fig. 8 is in embodiments of the invention when capacitor energy-storage units voltage is 220V, opening velocity curve chart of the present invention;
Fig. 9 is in embodiments of the invention when capacitor energy-storage units voltage is 220V, separating brake stroke curve figure of the present invention;
In figure, 1-angular displacement sensor, 2-position signalling transducer, 3-groove, 4-torque sensor, 5-ring flange, 6-rotating shaft, 7-connecting lever, 8-pull bar, 9-primary cut-out, 10-is brushless coil excitation direct current machine, 11-three-phase electricity, 12-motor servo controller, 13-electric machine main shaft, 14-stator core, 15-rotor core, 16-reel, 17-magnetizing coil, 18-end cap, 19-casing, 20-armature winding, 21-is fixed, rotor with salient pole device, 22-first IGBT module, 23-current transformer, 24-capacitor energy-storage units, 25-magnetizing coil power supply, 26-second IGBT module.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of primary cut-out brushless coil excitation direct current machine operating mechanism, comprise brushless coil excitation direct current machine 10, transmission mechanism, primary cut-out 9 and motor servo controller 12, described transmission mechanism is made up of rotating shaft 6, connecting lever 7 and pull bar 8.
Described brushless coil excitation direct current machine 10, comprises casing 19, is provided with electric machine main shaft 13 and the arranged in parallel and full symmetric of two groups of stator and rotor salient pole devices, 21, two groups of stator and rotor salient pole devices 21 in the middle vertical planes of electric machine main shaft 13 in casing 19; Described stator and rotor salient pole device 21 is made up of stator core 14 and rotor core 15, and described stator core 14 and rotor core 15 adopt salient pole type structure, and the salient pole number of stator core 14 is nine, and the salient pole number of rotor core 15 is six; Described electric machine main shaft 13 is coaxially arranged with casing 19, and described stator core 14 is fixed on the madial wall of casing 19, and rotor core 15 is fixed on electric machine main shaft 13, leaves the air gap of 2mm between described stator core 14 and rotor core 15; Electric machine main shaft 13 between described two groups of stator and rotor salient pole devices 21 is fixedly installed reel 16, is wound with magnetizing coil 17 in reel 16, magnetizing coil 17 is used for producing electric machine main shaft 13 and rotates the magnetic field needed; Described stator core 14 is circumferentially evenly provided with nine grooves 3, is wound with armature winding 20 in groove 3, described casing 19 and electric machine main shaft 13 adopt permeability magnetic material.
The electric machine main shaft 13 of described brushless coil excitation direct current machine 10 is fixedly connected with the rotating shaft 6 of transmission mechanism by ring flange 5, one end and the rotating shaft 6 of the connecting lever 7 of transmission mechanism are hinged, one end of the pull bar 8 of the other end and transmission mechanism is hinged, and the other end of pull bar 8 is fixedly connected with the moving contact of primary cut-out 9.
As shown in Figure 5, described motor servo controller 12, comprises central processing unit, capacitor energy-storage units 24, photoelectric coupling module, signal amplitude modular converter, IGBT drive module, the first IGBT module 22, second IGBT module 26, DC power supplier, divide-shut brake signal capture module, communication module and computer, communication module is used for the communication of central processing unit and computer, described central processing unit is connected with computer through communication module, described divide-shut brake signal capture module comprises separating brake instruction button, reclosing command button and coincidence instruction button, divide-shut brake signal capture module is used for catching divide-shut brake command signal and automatic reclosing command signal, and the output of described divide-shut brake signal capture module is connected with the input of central processing unit, the signal output part of position signalling transducer 2 be arranged on motor case 19 is connected with the input of central processing unit, and position signalling transducer 2 adopts Hall disc, and it is for gathering the position signalling of motor, the current transformer 23 be connected with motor threephase armature winding 20 is connected with the input of central processing unit respectively, the PWM signal generation unit of central processing unit is for generation of the triggering signal controlling motor speed, photoelectric coupling module and signal amplitude modular converter control for the insulation blocking realizing forceful electric power and light current, improve PWM amplitude is that an IBGT module 22 and the work of the 2nd IBGT module 26 provide support simultaneously, the PWM signal generation unit of central processing unit is successively through signal amplitude modular converter, photoelectric coupling module is connected with the input of IGBT drive module, IGBT drive module is cut-off for driving an IBGT module 22 and the 2nd IBGT module 26, realize the conversion of 5V to 15VPWM signal, first IGBT module 22 is for cut-offfing the circulation path of motor three-phase current, second IGBT module 26 is for changing the voltage be added on magnetizing coil 17, the output of IGBT drive module is connected with the drive end of the first IGBT module 22 with the second IGBT module 26 respectively, the energy that capacitor energy-storage units 24 rotates for storing driver motor, capacitor energy-storage units 24 is connected with the threephase armature winding 20 of motor through the first IGBT module 22, magnetizing coil 17 and the magnetizing coil power supply 25 of the second IGBT module 26 and motor are connected in series, the current transformer 23 be arranged in motor magnetizing coil 17 series loop is connected with the input of central processing unit, and current transformer 23 is for gathering the current signal of motor three-phase current and magnetizing coil 17, described DC power supplier provides working power for motor servo controller 12, DC power supplier is also for magnetizing coil power supply 25 provides working power simultaneously, what DC power supplier adopted is the DC power supply of positive and negative 12V, 15V and 5V, and the maximum permissible current value of power supply is 2A.
For the ease of realizing the control of this operating mechanism and the monitoring to this operating mechanism performance, the present invention is also provided with position signalling transducer 2, angular displacement sensor 1 and torque sensor 4; Described position signalling transducer 2 is arranged on casing 19, and angular displacement sensor 1 is arranged on electric machine main shaft 13, and torque sensor 4 is arranged between electric machine main shaft 13 and ring flange 5.
Described electric machine main shaft 13 is arranged in casing 19 by end cap 18, between electric machine main shaft 13 and end cap 18, be provided with bearing.
Described armature winding 20 adopts single-phase individual layer to concentrate the arrangement mode of whole distance.
The device model that the present invention selects is specially:
What angular displacement sensor 1 adopted is WDD35D-4 precision conductive plastic potentiometer, its independent linearity is ± and 0.1%; What position signalling transducer 2 adopted is the Hall disc that 3144 switch Hall devices form by three models; The model that torque sensor 4 adopts is ZNR-501, and its independent linearity is 0.5%; Motor servo controller 12 comprises the central processing unit supporting that the DSP28335 of floating-point operation forms for core, the IGBT drive module formed with 2SC0108T2A0-17 and peripheral hardware circuit thereof; The response efficiency of motor to control signal is also improved, for realizing providing support to the control of moving contact speed at Millisecond while quickening data processing; The model that photoelectric coupling module adopts is HCPL-63N, and the model that signal amplitude modular converter adopts is 74HC245; Described communication module is made up of the peripheral hardware circuit of electronic device MAX3232 and SP3485 and work thereof; The model that current transformer 23 adopts is CHF-200B.
The physical circuit annexation of motor servo controller 12 of the present invention is as follows:
As shown in Figure 6, PWM1 ~ PWM6 pin of central processing unit DSP28335 (U1) is connected with A0 ~ A5 pin of signal amplitude modular converter 74HC245 respectively, and Q0 ~ Q5 pin of signal amplitude modular converter is connected with CATHODE1, CATHODE2 pin of three photoelectric coupling module HCPL-63N respectively successively; Output pin VO1, VO2 of each photoelectric coupling module are connected, as the input signal of IGBT drive module with input pin INA, INB of the 2SC0108T2A0-17 device of three in IGBT drive module respectively successively; Output pin COLLECTER1, COLLECTER2 of each 2SC0108T2A0-17 device are connected with the grid of the IGBT in the first IGBT module 22 respectively; Six IGBT form full bridge rectifier, wherein in full bridge rectifier, the collector electrode of the IGBT of each upper brachium pontis is connected with the positive pole of capacitor energy-storage units 24 after being connected, be connected with the negative pole of capacitor energy-storage units 24, for the rotation of motor provides energy after the emitter of the IGBT of each lower brachium pontis is connected; First IGBT module 22 draws three wires between brachium pontis and lower brachium pontis respectively, and these three wires are connected with A, B, C threephase armature winding 20 of motor respectively; Three wires are separately installed with current transformer CHF-200B, the signal output part of three current transformers respectively with central processing unit INA, INB, INC tri-pin be connected, realize the collection to current signal; 3rd pin of three 3144 switch Hall devices of Hall disc respectively with central processing unit CAP1, CAP2, CAP3 tri-pin be connected, realize the collection to motor position signal; EPWM0 ~ EPWM3 pin of central processing unit is connected with A0 ~ A3 pin of signal amplitude modular converter respectively, and the output pin Q0 ~ Q3 of signal amplitude modular converter is connected with CATHODE1, CATHODE2 pin of two photoelectric coupling modules respectively; Output pin VO1, VO2 of two photoelectric coupling modules are connected with input pin INA, INB of two 2SC0108T2A0-17 devices more respectively, and output pin COLLECTER1, COLLECTER2 of last each 2SC0108T2A0-17 device are connected with the grid of four IGBT of the second IGBT module 26 respectively; SCITXDC, SCIRXDC pin of central processing unit is connected with T1IN, the T2IN of the MAX3232 device in communication module respectively, output pin T1OUT, R1OUT of MAX3232 device are connected with pin SCIRXDB, SCITXDB of SP3485 respectively, and this part realizes the conversion of 232 and 485 communications; A, B pin of SP3485 device is connected with computer by data wire, realizes the communication of central processing unit and computer.Input pin 1A3,1A4,1A5 of 3384 devices of divide-shut brake signal capture module are connected with separating brake instruction button, reclosing command button and coincidence instruction button respectively, output pin 1B3,1B4,1B5 of 3384 devices are connected with 1Y, 2Y, 3Y pin of 74HC14 device respectively, and output pin 4A, 5A, 6A of 74HC14 device are connected with CAP4, CAP5, CAP6 pin of central processing unit respectively.
Below in conjunction with accompanying drawing, a use procedure of the present invention is described.
The magnetic flux path of brushless coil excitation direct current machine 10 of the present invention, as shown in Figure 4, the magnetic flux produced after magnetizing coil 17 is energized passes stator core 14 through electric machine main shaft 13 from one end rotor core 15, more finally forms closed magnetic circuit through after other end stator core 14 to rotor core 15 through casing 19.Meanwhile, two ends rotor core 15 forms N pole and S pole respectively, and like this, rotor core 15 induces magnetic field; And the magnetic field interaction produced after being energized with the armature winding 20 of stator core 14, thus drive motors main shaft 13 operates.Therefore the adjustable DC electric current applied in magnetizing coil 17 forward or backwards, just can produce the excitatory magnetic potential of different directions and amplitude; This magnetic potential acts on magnetic field that rotor core 15 induces can produce the effect increasing magnetic or weak magnetic, not only can change the close size of motor gas-gap magnetic, also can coordinate the electric current regulated in armature winding 20 simultaneously, thus reach adjustable magnetic object, the air-gap flux adjustment amount that final acquisition is wide in range and speed control range, greatly can increase the speed adjustable range of motor, improve the dynamic characteristic of motor.Electric machine main shaft 13 also serves the effect of guiding magnetic field.
The electric machine main shaft 13 of brushless coil excitation direct current machine 10 rotates and produces the motion of torque actuated transmission mechanism, and transmission mechanism drives the motion of the moving contact of primary cut-out 9 and then realizes the operation of circuit-breaker switching on-off.Concrete motion process is as follows: the electric machine main shaft 13 of brushless coil excitation direct current machine 10 drives rotating shaft 6 to rotate by ring flange 5, rotating shaft 6 drives connecting lever 76 rotations around the shaft, and then drive the motion of insulated tension pole 8 in the vertical direction, the moving contact of primary cut-out 9 is finally made to move, make moving contact separate with fixed contact or contact, realize the breaking-closing operating of circuit breaker.The position signalling that the current signal of the motor three-phase current signal that central processing unit collects according to current transformer 23 and magnetizing coil 17 and position signalling transducer 2 collect, use Fuzzy Adaptive PID Control algorithm to change the duty ratio of the pwm signal that PWM signal generation unit produces, realize the speed governing of moving contact.And drive the first IGBT module 22 and the second IGBT module 26 conducting by IGBT drive module, capacitor energy-storage units 24 and magnetizing coil power supply 25 are powered to the threephase armature winding 20 of motor and magnetizing coil 17 respectively, and then the electric machine main shaft 13 of drive motors rotates, and realizes the control of the speed to circuit-breaker switching on-off moving contact.
Fig. 7 is spring load characteristic comparison diagram when operating mechanism in embodiments of the invention closes a floodgate when the driving force specislity that provides and vacuum high-pressure breaker closing, in figure, the inverse characteristic curve that curve 1 produces when being 126kV vacuum high-pressure breaker closing, the driving force specislity curve provided when curve 2 is operating mechanism of the present invention combined floodgates.Can be found out by this figure: operating mechanism of the present invention can meet performance requirement during 126kV vacuum high-pressure breaker closing very well.
Fig. 8 and Fig. 9 is when the voltage of capacitor energy-storage units 24 is 220V respectively, the opening velocity curve chart of surveying when operating mechanism of the present invention and 126kV vacuum high-pressure circuit breaker on-line test and separating brake stroke curve figure.
The present embodiment is for 126kV vacuum high-pressure circuit breaker, according to the requirement of this primary cut-out to operating mechanism, that is: controlled, the speed adjustable range of permanent magnet flux compared with wide, Driving Torque large, adapt to high-speed and high-temperature environment, stable and reliable working performance, selects primary cut-out of the present invention brushless coil excitation direct current machine operating mechanism.Primary cut-out of the present invention is brushless, and coil excitation direct current machine operating mechanism can meet the peak value opening velocity 6 ~ 10m/s of 126kV vacuum high-pressure circuit breaker requirement, and operating work is greater than 4kJ.
Claims (3)
1. a primary cut-out brushless coil excitation direct current machine operating mechanism, it is characterized in that comprising brushless coil excitation direct current machine, transmission mechanism, primary cut-out and motor servo controller, described transmission mechanism is made up of rotating shaft, connecting lever and pull bar;
Described brushless coil excitation direct current machine, comprises casing, is provided with electric machine main shaft and two groups of stator and rotor salient pole devices in casing, and the arranged in parallel and full symmetric of two groups of stator and rotor salient pole devices is in the middle vertical planes of electric machine main shaft; Described stator and rotor salient pole device is made up of stator core and rotor core, described electric machine main shaft and casing are coaxially arranged, described stator core is fixed on the madial wall of casing, and rotor core is fixed on electric machine main shaft, leaves air gap between described stator core and rotor core; Electric machine main shaft between described two groups of stator and rotor salient pole devices is fixedly installed reel, in reel, is wound with magnetizing coil; Described stator core is provided with groove, in groove, is wound with armature winding, described casing and electric machine main shaft adopt permeability magnetic material;
The electric machine main shaft of described brushless coil excitation direct current machine is fixedly connected with the rotating shaft of transmission mechanism by ring flange, one end and the rotating shaft of the connecting lever of transmission mechanism are hinged, one end of the pull bar of the other end and transmission mechanism is hinged, and the other end of pull bar is fixedly connected with the moving contact of primary cut-out;
Described motor servo controller, comprises central processing unit, capacitor energy-storage units, photoelectric coupling module, signal amplitude modular converter, IGBT drive module, the first IGBT module, the second IGBT module, DC power supplier, divide-shut brake signal capture module, communication module and computer; Described central processing unit is connected with computer through communication module, described divide-shut brake signal capture module comprises separating brake instruction button, reclosing command button and coincidence instruction button, and the output of described divide-shut brake signal capture module is connected with the input of central processing unit; The signal output part of position signalling transducer be arranged on motor case is connected with the input of central processing unit, and the current transformer be connected with motor threephase armature winding is connected with the input of central processing unit respectively; The PWM signal generation unit of central processing unit is connected with the input of IGBT drive module through signal amplitude modular converter, photoelectric coupling module successively, and the output of IGBT drive module is connected with the drive end of the first IGBT module with the second IGBT module respectively; Capacitor energy-storage units is connected with the threephase armature winding of motor through the first IGBT module, magnetizing coil and the magnetizing coil power sources in series of the second IGBT module and motor are connected, and the current transformer be arranged in the series loop of motor magnetizing coil is connected with the input of central processing unit; Described DC power supplier provides working power for motor servo controller;
Also be provided with position signalling transducer, angular displacement sensor and torque sensor; Described position signalling transducer is arranged on casing, and angular displacement sensor is arranged on electric machine main shaft, and torque sensor is arranged between electric machine main shaft and ring flange.
2. primary cut-out according to claim 1 brushless coil excitation direct current machine operating mechanism, is characterized in that described electric machine main shaft is arranged in casing by end cap, between electric machine main shaft and end cap, is provided with bearing.
3. primary cut-out according to claim 1 brushless coil excitation direct current machine operating mechanism, is characterized in that described armature winding adopts individual layer to concentrate the arrangement mode of whole distance.
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| CN109801815A (en) * | 2019-03-19 | 2019-05-24 | 广东电网有限责任公司 | A kind of novel high-voltage circuit-breaker and its control method |
| CN115639855A (en) * | 2022-11-08 | 2023-01-24 | 清华大学 | Path planning method and device for motor direct-drive high-voltage circuit breaker and electronic equipment |
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| CN201188391Y (en) * | 2008-03-05 | 2009-01-28 | 沈阳工业大学 | Rotation servo motor operation mechanism for high-voltage circuit breaker |
| CN201364850Y (en) * | 2008-12-26 | 2009-12-16 | 沈阳工业大学 | Cylindrical linear induction motor control device of high-voltage circuit breaker |
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