CN203562984U - Control device for coil excitation DC motor mechanism of high-voltage breaker - Google Patents
Control device for coil excitation DC motor mechanism of high-voltage breaker Download PDFInfo
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- CN203562984U CN203562984U CN201320728549.3U CN201320728549U CN203562984U CN 203562984 U CN203562984 U CN 203562984U CN 201320728549 U CN201320728549 U CN 201320728549U CN 203562984 U CN203562984 U CN 203562984U
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Abstract
The utility model provides a control device for the coil excitation DC motor mechanism of a high-voltage breaker and belongs to the field of electric appliance automation control technology. The control device comprises a capacitor voltage regulation unit and an excitation coil magnetic tuning unit. The capacitor voltage regulation unit is composed of a power supply module, a rectifier bridge, an energy storage capacitor, a capacitor voltage detection circuit, a capacitor charging control unit, a three-phase bridge-type insulated gate bipolar translator (IGBT) rectifier circuit, a current sensor, a coil current detection circuit, a rotary encoder, a motor speed detection circuit, a position sensor, a position capture circuit, a central processor, a switching on-off capture circuit and a second power electronic control unit. The excitation coil magnetic tuning unit comprises a two-phase bridge type IGBT rectifier circuit, a current sensor, a coil current detection circuit and a first power electronic control unit. The signal output end of the switching on-off capture circuit is connected with the input end of the central processor. The signal output end of the position sensor is connected with the input end of the position capture circuit.
Description
Technical field
The utility model belongs to electrical automation control technology field, particularly relates to a kind of control device of primary cut-out coil excitation direct-current motor mechanism, is mainly used in the brushless coil excitation direct current machine of primary cut-out operating mechanism.
Background technology
Electric operating mechanism is as the actuating unit of circuit breaker, have simple in structure, electromagnetic force is large, the feature of flexible adjustment, this is that the rapidity and the controllability that realize breaker operator have been established design basis.Permanent-magnet brushless DC electric machine (PMBLDCM) is especially with its high efficiency, small size and easy to control, the features such as significant long-life and reliability have presented significant advantage in speed governing field, but PMBLDCM rotor permanent magnet exists intrinsic defect as made motor cost increase, uncontrollable limited permanent power bracket and the limited speed adjustable range of causing of permanent magnet flux, permanent magnet can be demagnetized by large reverse magnetomotive force and high temperature, degradation under the high speed performance that the mechanical strength of assembling between rotor yoke and permanent magnet causes, limited its range of application at high-voltage breaker operation mechanism.Utility model content
The problem existing for prior art, the utility model provides a kind of control device of primary cut-out coil excitation direct-current motor mechanism.The dynamic optimization that this control device can be realized between the brushless coil excitation direct current machine of primary cut-out operating mechanism adjustable magnetic, speed governing and pressure regulation is controlled.
To achieve these goals, the utility model adopts following technical scheme, and a kind of control device of primary cut-out coil excitation direct-current motor mechanism comprises capacitor pressure regulation unit and magnetizing coil adjustable magnetic unit; Described capacitor pressure regulation unit comprises power module, rectifier bridge, energy storage capacitor, capacitance voltage testing circuit, capacitor charging control unit, three-phase bridge IGBT rectification circuit, current sensor, coil current testing circuit, rotary encoder, motor speed testing circuit, position transducer, position capture circuit, central processing unit, divide-shut brake capture circuit and the second power electronics control unit; Described magnetizing coil adjustable magnetic unit comprises two-phase bridge-type IGBT rectification circuit, current sensor, coil current testing circuit and the first power electronics control unit;
The signal output part of described divide-shut brake capture circuit is connected with the input of central processing unit, the signal output part of described position transducer is connected with the input of position capture circuit, and the output of position capture circuit is connected with the input of central processing unit, the signal output part of described rotary encoder is connected with the input of motor speed testing circuit, and the output of motor speed testing circuit is connected with the input of central processing unit, the signal output part of described current sensor is connected with the input of coil current testing circuit, and the output of coil current testing circuit is connected with the input of central processing unit, described energy storage capacitor Yi road output is connected with the input of capacitance voltage testing circuit, the output of capacitance voltage testing circuit is connected with the input of central processing unit, and another road output of energy storage capacitor is connected with three-phase bridge IGBT rectification circuit Yi road input, another road input of three-phase bridge IGBT rectification circuit is connected with the output of the second power electronics control unit, second input of power electronics control unit and the output of central processing unit are connected, and the output of three-phase bridge IGBT rectification circuit is connected with motor threephase armature winding, the output of described central processing unit is connected with the input of capacitor charging control unit, the output of capacitor charging control unit is connected with energy storage capacitor Yi road input, another road input of energy storage capacitor is connected with rectifier bridge Yi road output, another road output of rectifier bridge is connected with two-phase bridge-type IGBT rectification circuit Yi road input, another road input of two-phase bridge-type IGBT rectification circuit is connected with the output of the first power electronics control unit, first input of power electronics control unit and the output of central processing unit are connected, the input of described rectifier bridge is connected with electrical network, and the output of two-phase bridge-type IGBT rectification circuit is connected with the magnetizing coil of motor, and described power module provides operating voltage for other device.
Adopt the brushless coil excitation direct current machine of primary cut-out of the present utility model operating mechanism, comprise brushless coil excitation direct current machine, transmission mechanism, primary cut-out and motor servo controller, described transmission mechanism is comprised 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, two groups of stator and rotor salient pole devices be arranged in parallel and full symmetric in the middle vertical planes of electric machine main shaft; Described stator and rotor salient pole device is comprised of stator core and rotor core, described electric machine main shaft and casing coaxially arrange, described stator core is fixed on the madial wall of casing, and rotor core is fixed on electric machine main shaft, between described stator core and rotor core, leaves air gap; On the electric machine main shaft between described two groups of stator and rotor salient pole devices, be fixedly installed reel, in reel, be wound with magnetizing coil; In described stator core, be provided with groove, be wound with armature winding in groove, 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;
The utility model is also provided with position signalling transducer, angular displacement sensor, current sensor and torque sensor; Described position signalling installation of sensors is 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, and described current sensor is connected with magnetizing coil with threephase armature winding respectively.
Described electric machine main shaft is arranged in casing by end cap, between electric machine main shaft and end cap, is provided with bearing.
Described armature winding adopts individual layer to concentrate the arrangement mode of whole distance.
The beneficial effects of the utility model:
Adopt the brushless coil excitation direct current machine of control device of the present utility model, adopt 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; By regulating magnetizing coil increase and decrease air gap flux density, obtain wide region air-gap flux and speed adjustable range, brushless or conducting slip ring and without permanent magnet demagnetization risk, not only produce the electromagnetic torque that is approximated to direct ratio with the field supply that provides brush direct current series motor characteristic, and can produce the reluctance torque that is approximated to direct ratio with the phase current that switched reluctance machines characteristic is provided, realize the operational environment that speed adjustable range is large, adapt to the high mechanical collision of high temperature, can meet 126kV above and peak value opening velocity and the load torque characteristic requirement of superhigh pressure grade circuit breaker.
Accompanying drawing explanation
Fig. 1 is for adopting the structural representation of the brushless coil excitation direct current machine of the primary cut-out operating mechanism of control device of the present utility model and control method;
Fig. 2 is for adopting the structural representation of the brushless coil excitation direct current machine of control device of the present utility model and control method;
Fig. 3 is the A-A cutaway view of Fig. 2;
Fig. 4 is for adopting the magnetic flux path schematic diagram of the brushless coil excitation direct current machine of control device of the present utility model and control method;
Fig. 5 is the schematic block circuit diagram of the control device of primary cut-out coil excitation direct-current motor mechanism of the present utility model;
Fig. 6 is the circuit theory diagrams of power module of an embodiment of control device of the present utility model;
Fig. 7 is the circuit theory diagrams of capacitance voltage testing circuit of an embodiment of control device of the present utility model;
Fig. 8 is the circuit theory diagrams of capacitor charging control unit of an embodiment of control device of the present utility model;
Fig. 9 is the circuit theory diagrams of three-phase bridge IGBT rectification circuit of an embodiment of control device of the present utility model;
Figure 10 is the circuit theory diagrams of two-phase bridge-type IGBT rectification circuit of an embodiment of control device of the present utility model;
Figure 11 is the circuit connection diagram of current sensor of an embodiment of control device of the present utility model;
Figure 12 is the circuit theory diagrams of coil current testing circuit of an embodiment of control device of the present utility model;
Figure 13 is the circuit theory diagrams of motor speed testing circuit of an embodiment of control device of the present utility model;
Figure 14 is the winding diagram of position transducer of an embodiment of control device of the present utility model;
Figure 15 is the circuit theory diagrams of position capture circuit of an embodiment of control device of the present utility model;
Figure 16 is the circuit theory diagrams of divide-shut brake capture circuit of an embodiment of control device of the present utility model;
Figure 17 is the wiring pinouts of central processing unit of an embodiment of control device of the present utility model;
Figure 18 is the circuit theory diagrams of power electronics control unit of an embodiment of control device of the present utility model;
Figure 19 is the program flow diagram of control method of the present utility model;
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-stator and rotor salient pole device.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As shown in Figure 5, a kind of control device of primary cut-out coil excitation direct-current motor mechanism, comprises capacitor pressure regulation unit and magnetizing coil adjustable magnetic unit; Described capacitor pressure regulation unit comprises power module, rectifier bridge, energy storage capacitor, capacitance voltage testing circuit, capacitor charging control unit, three-phase bridge IGBT rectification circuit, current sensor, coil current testing circuit, rotary encoder, motor speed testing circuit, position transducer, position capture circuit, central processing unit, divide-shut brake capture circuit and the second power electronics control unit; Described magnetizing coil adjustable magnetic unit comprises two-phase bridge-type IGBT rectification circuit, current sensor, coil current testing circuit and the first power electronics control unit;
The signal output part of described divide-shut brake capture circuit is connected with the input of central processing unit, the signal output part of described position transducer is connected with the input of position capture circuit, and the output of position capture circuit is connected with the input of central processing unit, the signal output part of described rotary encoder is connected with the input of motor speed testing circuit, and the output of motor speed testing circuit is connected with the input of central processing unit, the signal output part of described current sensor is connected with the input of coil current testing circuit, and the output of coil current testing circuit is connected with the input of central processing unit, described energy storage capacitor Yi road output is connected with the input of capacitance voltage testing circuit, the output of capacitance voltage testing circuit is connected with the input of central processing unit, and another road output of energy storage capacitor is connected with three-phase bridge IGBT rectification circuit Yi road input, another road input of three-phase bridge IGBT rectification circuit is connected with the output of the second power electronics control unit, second input of power electronics control unit and the output of central processing unit are connected, and the output of three-phase bridge IGBT rectification circuit is connected with motor threephase armature winding, the output of described central processing unit is connected with the input of capacitor charging control unit, the output of capacitor charging control unit is connected with energy storage capacitor Yi road input, another road input of energy storage capacitor is connected with rectifier bridge Yi road output, another road output of rectifier bridge is connected with two-phase bridge-type IGBT rectification circuit Yi road input, another road input of two-phase bridge-type IGBT rectification circuit is connected with the output of the first power electronics control unit, first input of power electronics control unit and the output of central processing unit are connected, the input of described rectifier bridge is connected with electrical network, and the output of two-phase bridge-type IGBT rectification circuit is connected with the magnetizing coil of motor, and described power module provides operating voltage for other device.
The device model that the utility model is selected is specially:
Power module is by AMS1117 chip and peripheral hardware the electric circuit constitute thereof; Capacitance voltage detection module is comprised of operational amplifier OP07, linear optical coupling HCNR200 and light-emitting diode etc.; Capacitor charging control module is comprised of IGBT of operational amplifier OP07, linear optical coupling HCNR200 and BNTDH39 model etc.; The IGBT that three-phase bridge rectification bridge and two-phase bridge rectifier bridge are SKM600GB066D by model forms; Current sensor adopts CHF-400B model; Rotary encoder adopts E6B2-CWZ1X1000P/R type rotary encoder; Motor speed detection module is mainly comprised of a bus transceiver, and bus transceiver adopts SN74LVCH245A as level conversion device; What position signalling transducer adopted is the Hall disc that T0-92UA Hall element forms by three models; The position signalling of motor is caught with divide-shut brake signal acquisition circuitry and is all adopted 74HC14 and 74CBTD3384 chip to form; Central processing unit be take and supported that the DSP28335 of floating-point operation is that core forms, and has also improved the response efficiency of motor to control signal, for realizing and provide support to the control of moving contact speed at Millisecond when accelerating data processing; What power electronics control module adopted is the High Speed I GBT drive circuit based on M57962L, this circuit ± 15V voltage supplied with by power module.
The physical circuit annexation of control device of the present utility model is as follows:
As shown in Fig. 6～Figure 18, CAP4, CAP5, the CAP6 of the input 74HC14 chip of described position sensor signal output terminals A, B, C link position capture circuit, DSCAP4, the DSCAP5 of the output chip 74CBTD3384 of position capture circuit, DSCAP6 are connected with CAP1, CAP2, CAP3 tri-pins of central processing unit, realize the collection to motor position signal; Divide-shut brake signal acquisition circuitry is accepted the signal that remote controller sends, and through level conversion, its output chip 74CBTD3384 pin DSCAP4, DSCAP5, DSCAP6 are connected with CAP5, CAP6, CAP7 tri-pins of central processing unit.The output of described rotary encoder connects the A1 pin of the input chip SN74LVCH254A of motor speed testing circuit, and the output B1 pin of motor speed testing circuit connects the CAP4 pin of central processing unit DSP; Described capacitor pressure regulation unit and the output of the current sensor of magnetizing coil adjustable magnetic unit are connected respectively separately the input of corresponding coil current testing circuit, and the output of coil current testing circuit connects another two-way input ADCINBO, the ADCINB1 of central processing unit DSP; The cathode output end of described energy storage capacitor connects input 0 end of capacitance voltage testing circuit, and the output of capacitance voltage testing circuit connects the input ADCINAO of central processing unit DSP; The cathode output end of described energy storage capacitor connects input 1 end of capacitor charging control circuit, another road input of capacitance voltage testing circuit connects the output GPI053 of central processing unit DSP, and the output of capacitance voltage testing circuit connects the grid of BNTDH39 model IGBT; Central processing unit DSP six road output PWM1～PWM6 connects the second power electronics control module Liu road input of capacitor pressure regulation unit, and the output of the second power electronics control module connects three-phase bridge IGBT rectification circuit Liu road signal input part; Central processing unit DSP Ling tetra-road output PWM7～PWM10 connects the first power electronics control module Si road input of magnetizing coil adjustable magnetic unit, and the output of the first power electronics control module connects two-phase bridge-type IGBT rectification circuit Si road signal input part; The input access electrical network of described rectifier bridge, the cathode output end of rectifier bridge connects the collector electrode of the IGBT of capacitor charging control unit, and IGBT emitter connects the positive pole of energy storage capacitor, and the cathode output end of rectifier bridge connects the negative pole of energy storage capacitor; Six IGBT form three-phase bridge IGBT rectification circuit, wherein in full bridge rectifier, the collector electrode of the IGBT of brachium pontis is connected with the positive pole of capacitor deposited energy unit after being connected on each, the emitter of the IGBT of each lower brachium pontis is connected with the negative pole of capacitor deposited energy unit after being connected, for the rotation of motor provides energy; Four IGBT form two-phase bridge-type IGBT rectification circuit, wherein in full bridge rectifier, the collector electrode of the IGBT of brachium pontis is connected with the positive pole of electrical network after being connected on each, the emitter of the IGBT of each lower brachium pontis is connected with the negative pole of electrical network after being connected, for the magnetizing coil of motor provides energy; The output of described three-phase bridge IGBT rectification circuit is connected to the coil of the threephase armature winding 20 of brushless coil excitation direct current machine 10; The output of described two-phase bridge-type IGBT rectification circuit connects the magnetizing coil 17 of brushless coil excitation direct current machine 10.
As shown in figure 19, adopt the control method of the control device of described primary cut-out coil excitation direct-current motor mechanism, comprise the steps:
Step 1: electrical network charges to energy storage capacitor by rectifier bridge, and two-phase bridge-type IGBT rectification circuit is powered;
Step 2: central processing unit obtains the magnitude of voltage of energy storage capacitor by capacitance voltage testing circuit;
Step 3: whether the magnitude of voltage of the energy storage capacitor obtaining in determining step two reaches voltage setting value; If so, by capacitor charging control unit, cut off the charging circuit of energy storage capacitor, execution step four; If not, turn and perform step two;
Step 4: central processing unit obtains the residing position of machine shaft by position transducer and position capture circuit, determines the phase sequence of the required conducting of motor threephase armature winding, carries out separating brake or closing operation;
Step 5: rotary encoder detects the tachometer value v of motor, and by motor speed testing circuit, the tachometer value v of motor is uploaded to central processing unit; Current sensor detects the current value i of motor threephase armature winding and magnetizing coil, and by coil current testing circuit, current value i is uploaded to central processing unit;
Step 6: the tachometer value v of the motor obtaining in step 5 and current value i and reference rotation velocity set point and current setting value are compared, obtain deviate and deviation ratio;
Step 7: using velocity deviation value and deviation ratio as the input of fuzzy controller, carry out fuzzy calculating, obtain needing to regulate given speed △ v;
Step 8: determine that electric current regulates set-point i
*, wherein: i
*=Δ i+i, Δ i=K Δ v, in formula, i
*for electric current regulates set-point, i is the current value obtaining in step 5, and Δ i is current error value, and △ v is that the need that obtain in step 7 regulate given speed, and K is electric current adjustment factor;
Step 9: relatively electric current regulates set-point i
*with corresponding current value L under maximum voltage
maxsize, if i
*<L
max, carry out pressure regulation and turn and perform step ten; If i
*>L
max, carry out adjustable magnetic and turn and perform step 11;
Step 10: determine the PWM duty ratio that pressure regulation is required, and control three-phase bridge IGBT rectification circuit by the second power electronics control unit, thereby regulate by the electric current of motor threephase armature winding, and return to execution step five;
The PWM duty ratio that pressure regulation is required, according to following formula, determine:
In formula, α
kthe PWM duty ratio that-pressure regulation is required, i
*-electric current regulates set-point, L
maxcorresponding current value under-maximum voltage;
α
kfrom 0-1, corresponding electric current regulates set-point i
*from 0-I
max;
Step 11: determine the PWM duty ratio that adjustable magnetic is required, and control two-phase bridge-type IGBT rectification circuit by the first power electronics control unit, thereby regulate by the electric current of motor magnetizing coil, and return to execution step nine;
The PWM duty ratio that adjustable magnetic is required, according to following formula, determine:
In formula, β
kthe PWM duty ratio that-adjustable magnetic is required, i
*-electric current regulates set-point, I '
maxwhen-magnetizing coil electric current is maximum, the current value under the corresponding maximum voltage in pressure regulation unit;
β
kfrom 0-1, corresponding i
*from 0-I '
max;
Step 12: finish.
Described in step 7 using velocity deviation value and deviation ratio as the input of fuzzy controller, carry out fuzzy calculating, wherein, the control determination method for parameter of PID controller is as follows:
By the tachometer value v of the motor obtaining in step 5 and reference rotation velocity set point v
*compare, obtain velocity deviation value e and velocity deviation rate ec, and using described velocity deviation value e and velocity deviation rate ec as the input of fuzzy controller, carry out fuzzy calculating; According to velocity deviation value e, velocity deviation rate ec and fuzzy rule, determine the control parameter k of PID controller
p, k
iand k
d, wherein, k
pfor proportional gain, k
ifor integration time constant, k
dfor derivative time constant:
Take velocity deviation value e and velocity deviation rate ec is input language variable, k
p, k
iand k
dfor output language variable, the Linguistic Value of input language variable be all taken as " negative large " (NB), " in negative " (NM), " negative little " (NS), " zero " (ZO), " just little " (PS), " center " (PM), " honest " (PB) seven kinds, the Linguistic Value of output language variable be all taken as " zero " (ZO), " just little " (PS), " center " (PM), " honest " (PB) four kinds;
1) when | e| is greater than v
*/ 2, k now
pget " honest " (PB), k
iget " just little " (PS), k
dget " zero " (ZO);
2) when e * ec>0, k now
pget " honest " (PB), k
dget " center " (PM), k
iget " just little " (PS);
3) when e * ec<0 or e=0, the absolute value of velocity deviation value e changes towards the direction reducing, or has reached poised state, can take the output of retentive control device constant;
4) as e * ec=0, e ≠ 0 o'clock, the curve of system is parallel with reference curve or consistent, for making system have good steady-state behaviour, k
pget " honest " (PB), k
iget " honest " (PB), avoid vibrating near set point simultaneously, and the interference free performance of taking into account system, k suitably chosen
d, k
dget " center " (PM).
According to the control parameter k adjusting
p, k
i, k
dcarry out velocity ambiguity PID calculating, obtain needing to regulate given speed △ v.
It is example that the present embodiment be take 126kV vacuum high-pressure circuit breaker, requirement according to this primary cut-out to operating mechanism, that is: controlled, the speed adjustable range of permanent magnet flux compared with wide, output torque is large, adapt to high-speed and high-temperature environment, stable and reliable working performance, selects the brushless coil excitation direct current machine of primary cut-out operating mechanism.Primary cut-out 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.
As shown in Figure 1, Figure 2, Figure 3 shows, adopt the brushless coil excitation direct current machine of the primary cut-out operating mechanism of control device of the present utility model and control method, comprise brushless coil excitation direct current machine 10, transmission mechanism, primary cut-out 9 and motor servo controller 12, described transmission mechanism is comprised of rotating shaft 6, connecting lever 7 and pull bar 8.
Described brushless coil excitation direct current machine 10, comprises casing 19, in casing 19, be provided with that electric machine main shaft 13 and 21, two groups of stator and rotor salient pole devices 21 of two groups of stator and rotor salient pole devices are arranged in parallel and full symmetric in the middle vertical planes of electric machine main shaft 13; Described stator and rotor salient pole device 21 is comprised 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 coaxially arranges 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; On the electric machine main shaft 13 between described two groups of stator and rotor salient pole devices 21, be fixedly installed reel 16, be wound with magnetizing coil 17 in reel 16, magnetizing coil 17 is used for producing the magnetic field that electric machine main shaft 13 rotations need; In described stator core 14, along even circumferential, be provided with nine grooves 3, be 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.
For the ease of realizing control and the monitoring to this operating mechanism performance of this operating mechanism, the utility model is also provided with position signalling transducer 2, angular displacement sensor 1, current sensor and torque sensor 4; Described position signalling transducer 2 is arranged on casing 19, angular displacement sensor 1 is arranged on electric machine main shaft 13, torque sensor 4 is arranged between electric machine main shaft 13 and ring flange 5, and described current sensor is connected with magnetizing coil 17 with threephase armature winding 20 respectively.
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, is provided with bearing.
Described armature winding 20 adopts single-phase individual layer to concentrate the arrangement mode of whole distance.
Below in conjunction with accompanying drawing, a use procedure of the present utility model is described.
Adopt the magnetic flux path of the brushless coil excitation direct current machine 10 of control device of the present utility model and control method, as shown in Figure 4, the rear magnetic flux producing of magnetizing coil 17 energising passes stator core 14 through electric machine main shaft 13 from one end rotor core 15, then to rotor core 15, finally forms closed magnetic circuit after casing 19 passes other end stator core 14.Meanwhile, two ends rotor core 15 forms respectively the N utmost point and the S utmost point, and like this, rotor core 15 induces magnetic field; And the magnetic field interaction producing after switching on the armature winding 20 of stator core 14, thereby drive motors main shaft 13 runnings.Therefore apply adjustable DC electric current forward or backwards in magnetizing coil 17, just can produce the excitatory magnetic potential of different directions and amplitude; This magnetic potential acts on the magnetic field that rotor core 15 induces can produce the effect that increases magnetic or weak magnetic, not only can change the close size of motor gas-gap magnetic, also can coordinate the electric current regulating in armature winding 20 simultaneously, thereby reach adjustable magnetic object, wide in range air-gap flux adjustment amount and the speed control range of final acquisition, can greatly increase the speed adjustable range of motor, improve the dynamic characteristic of motor.Electric machine main shaft 13 has also played the effect of guiding magnetic field.
Electric machine main shaft 13 rotations of brushless coil excitation direct current machine 10 produce the motion of torque actuated transmission mechanism, and transmission mechanism drives the moving contact motion 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 rotations by ring flange 5, rotating shaft 6 drives connecting lever 76 rotations around the shaft, and then drive insulated tension pole 8 in the vertical directions to move, finally make the moving contact motion of primary cut-out 9, make moving contact separate with fixed contact or contact, realize the breaking-closing operating of circuit breaker.
Claims (1)
1. a control device for primary cut-out coil excitation direct-current motor mechanism, is characterized in that comprising capacitor pressure regulation unit and magnetizing coil adjustable magnetic unit; Described capacitor pressure regulation unit comprises power module, rectifier bridge, energy storage capacitor, capacitance voltage testing circuit, capacitor charging control unit, three-phase bridge IGBT rectification circuit, current sensor, coil current testing circuit, rotary encoder, motor speed testing circuit, position transducer, position capture circuit, central processing unit, divide-shut brake capture circuit and the second power electronics control unit; Described magnetizing coil adjustable magnetic unit comprises two-phase bridge-type IGBT rectification circuit, current sensor, coil current testing circuit and the first power electronics control unit;
The signal output part of described divide-shut brake capture circuit is connected with the input of central processing unit, the signal output part of described position transducer is connected with the input of position capture circuit, and the output of position capture circuit is connected with the input of central processing unit, the signal output part of described rotary encoder is connected with the input of motor speed testing circuit, and the output of motor speed testing circuit is connected with the input of central processing unit, the signal output part of described current sensor is connected with the input of coil current testing circuit, and the output of coil current testing circuit is connected with the input of central processing unit, described energy storage capacitor Yi road output is connected with the input of capacitance voltage testing circuit, the output of capacitance voltage testing circuit is connected with the input of central processing unit, and another road output of energy storage capacitor is connected with three-phase bridge IGBT rectification circuit Yi road input, another road input of three-phase bridge IGBT rectification circuit is connected with the output of the second power electronics control unit, second input of power electronics control unit and the output of central processing unit are connected, and the output of three-phase bridge IGBT rectification circuit is connected with motor threephase armature winding, the output of described central processing unit is connected with the input of capacitor charging control unit, the output of capacitor charging control unit is connected with energy storage capacitor Yi road input, another road input of energy storage capacitor is connected with rectifier bridge Yi road output, another road output of rectifier bridge is connected with two-phase bridge-type IGBT rectification circuit Yi road input, another road input of two-phase bridge-type IGBT rectification circuit is connected with the output of the first power electronics control unit, first input of power electronics control unit and the output of central processing unit are connected, the input of described rectifier bridge is connected with electrical network, and the output of two-phase bridge-type IGBT rectification circuit is connected with the magnetizing coil of motor, and described power module provides operating voltage for other device.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320728549.3U CN203562984U (en) | 2013-11-18 | 2013-11-18 | Control device for coil excitation DC motor mechanism of high-voltage breaker |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320728549.3U CN203562984U (en) | 2013-11-18 | 2013-11-18 | Control device for coil excitation DC motor mechanism of high-voltage breaker |
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| CN203562984U true CN203562984U (en) | 2014-04-23 |
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| CN201320728549.3U Expired - Fee Related CN203562984U (en) | 2013-11-18 | 2013-11-18 | Control device for coil excitation DC motor mechanism of high-voltage breaker |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103580561A (en) * | 2013-11-18 | 2014-02-12 | 沈阳工业大学 | Control device and control method of high-voltage circuit-breaker coil exciting direct-current motor mechanism |
| CN104155179A (en) * | 2014-08-27 | 2014-11-19 | 中国工程物理研究院流体物理研究所 | Magnetically-driven pressure device and measurement method for directly measuring high-pressure strength of material |
| CN107037357A (en) * | 2017-05-31 | 2017-08-11 | 中国电力科学研究院 | A kind of full-automatic circuit breaker chassis mechanical endurance test system and method |
| CN109510424A (en) * | 2018-12-17 | 2019-03-22 | 煤科集团沈阳研究院有限公司 | Coal mine disconnecting switch disjunction test direct-drive motor mechanism and its control system |
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2013
- 2013-11-18 CN CN201320728549.3U patent/CN203562984U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103580561A (en) * | 2013-11-18 | 2014-02-12 | 沈阳工业大学 | Control device and control method of high-voltage circuit-breaker coil exciting direct-current motor mechanism |
| CN103580561B (en) * | 2013-11-18 | 2016-05-25 | 沈阳工业大学 | Control device and the control method of primary cut-out coil excitation direct-current motor mechanism |
| CN104155179A (en) * | 2014-08-27 | 2014-11-19 | 中国工程物理研究院流体物理研究所 | Magnetically-driven pressure device and measurement method for directly measuring high-pressure strength of material |
| CN104155179B (en) * | 2014-08-27 | 2016-07-06 | 中国工程物理研究院流体物理研究所 | The Magnetic driving pressure apparatus of a kind of direct measurement material high voltage intensity and measuring method |
| CN107037357A (en) * | 2017-05-31 | 2017-08-11 | 中国电力科学研究院 | A kind of full-automatic circuit breaker chassis mechanical endurance test system and method |
| CN107037357B (en) * | 2017-05-31 | 2024-03-15 | 中国电力科学研究院 | Full-automatic breaker chassis vehicle mechanical life test system and method |
| CN109510424A (en) * | 2018-12-17 | 2019-03-22 | 煤科集团沈阳研究院有限公司 | Coal mine disconnecting switch disjunction test direct-drive motor mechanism and its control system |
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