CN102088272B - 10kV digital high-voltage stator variable voltage control device - Google Patents
10kV digital high-voltage stator variable voltage control device Download PDFInfo
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Abstract
The invention provides a 10kV digital high-voltage stator variable voltage control device, which comprises a stator control device, a rotor control device, a brake device and a safety device of an engine. The 10kV digital high-voltage stator variable voltage control device is characterized in that: the stator control device of the engine comprises a controlled silicon component (9) which is connected to a stator wiring terminal of the engine, a forward and reverse trigger (2) and a control system thereof, wherein the output end of the forward and reverse trigger (2) is connected with each controlled silicon trigger electrode in the controlled silicon component (9); the control system is connected with the input end of the forward and reverse trigger (2); and in the controlled silicon component (9), multiple grades of forward and reverse controlled silicon are connected in series into a group, each phase of the wiring terminal of the engine stator connects one group of the controlled silicon to a phase of a power supply end or connects two groups of controlled silicon in parallel to two phases of power supply ends respectively. The 10kV digital high-voltage stator variable voltage control device can ensure that more or a plurality of wound asynchronous motors with voltage of between 1 and 10kV and current range of between 50 and 2,000A perform stable variable voltage control under large starting torque, and has the characteristics of energy saving, high dynamic property, high accuracy, high response speed and the like.
Description
Technical field
The present invention relates to motor speed control device, relate to the Silicon Controlled stator pressure-speed regulating device of high-tension winding motor specifically.
Background technology
Because historical reasons, by high voltage supply, great majority are " single speed " operations to capacity greater than the alternating current machine more than the 450-500KW in China's traditional industry.Guarantee big detent torque and the speed governing occasion that for example hoists at needs, conventional method is to utilize wound asynchronous motor to adopt rotor series resistance speed, seals in the methods such as tandem control of adjustable additional electromotive force in the frequency converter frequency control of stator termination and the rotor loop.
The asynchronous motor rotor serial-resistance speed-regulation is to obtain different mechanical properties by the resistance that contactor is connected in series different numerical value, thereby the speed that realizes Electric Traction is regulated.Though can reduce starting current to 3～5 times rated current (directly about 5～7 times of rated current of starting current), guarantee big detent torque, but circuit and mechanical structure there is bigger impact, velocity variations was discontinuous when startup stopped with gear shift, can not realize accurate location, speed and load have relation, can not realize speed closed loop.
If adopt the frequency that changes the motor stator power supply, thereby change the frequency control of its synchronous speed, can realize big torque, low starting current, accurate variable speed energy saving etc., but its technical sophistication, by the composition structure of present general frequency conversion speed-adjusting system, its frequency converter must be connected motor stator side and capacity palpus 〉=capacity motor.The China Semiconductor Industry weak foundation, still do not possess at present independent development or make the required self-turn-off device of high-voltage large-capacity AC-DC-AC frequency converter and the condition of supporting extensive integral control circuit chip thereof, inverter power components and parts IGBT and IGCT carry out blockade on new techniques abroad, domestic also impotentia manufacturing, so in the big motor of high pressure if adopt variable-frequency control technique, need from external import high-voltage large-capacity frequency converter, such frequency converter price is high, wants to popularize or promote the use of very difficult.In addition, frequency converter output adopts power component to carry out speed-sensitive switch, output current contains a large amount of high order harmonic components, conventional motor very easily causes the excessive ablation motor bearings of motor shaft electric current, high dv/dt makes very high to the insulating requirements of motor, and high order harmonic component is very easily polluted electrical network, disturbs other equipment operate as normal, use and usually isolating transformer, filter, reactor, reactive power compensation etc. need be installed, these make that all cost further improves.
Tandem control reaches the purpose of speed governing owing to seal in the slip that adjustable additional electromotive force changes motor in the rotor loop.The additional electromotive force that most of slip power is sealed in absorbs, recycling produces additional device, the slip power that absorbs is returned electrical network or switching energy is used, electrical network exists that the system power factor is low, harmonic effects is big though this speed regulating method can feed back to the slip loss in the speed regulation process, adjustable range little (70%～90% rated speed), dynamic response are unhappy, general also needs to increase the more high shortcoming of step-up transformer, system failure rate that feedback is used.Because the tandem control technology is still immature at present, does not also have widespread adoption.
Summary of the invention
Problem at above-mentioned electric machine speed regulation appearance, speed regulating device of the present invention technical problem to be solved is to 1 kilovolt～10 kilovolts of operating voltages, the wire wound asynchronous motor of rated current 50～2000A scope carries out speed governing, the closed-loop drive scope can be set by parameter, realize the continuous velocity control irrelevant with load in the closed loop scope, its control characteristic can compare favourably with direct current speeder and AC frequency conversion speed closed loop control characteristic, outside the closed loop scope, accelerate by the excision rotor resistance, four-quadrant drives operation, electronic type rotating magnetic field commutation reliably.Solve in aforementioned three kinds of voltage-regulating techniques expensive, the pressure regulation precision is low, dynamic response is unhappy, speed adjustable range is narrow, mechanical shock greatly, not energy-conservation, problem such as power factor is low, harmonic effects is bigger.
The digital high pressure stator variable voltage speed control of a kind of 10kV device, the stator control device that comprises motor, the rotor control device, brake apparatus and safety device, it is characterized in that: the stator control device of described motor comprises the silicon controlled component that is connected the motor stator terminals, forward and reverse trigger that output is connected with each controllable silicon trigger electrode in the silicon controlled component, with the control system that is connected with the input of forward and reverse trigger, described silicon controlled component has many groups, each group is multistage forward and reverse controllable silicon series connection, each of motor stator join line end connect one group of silicon controlled component to a phase feeder ear or and connect two groups of silicon controlled components and be connected respectively to the two-phase feeder ear; The stator control device of described motor also comprises crane operation control technical module, the U663 port of described crane operation control technical module is connected with speed control by the starting impulse module, the output of described speed control is connected with a contact of single-pole double-throw switch (SPDT), another contact of described single-pole double-throw switch (SPDT) is connected with 100% node, the swing arm of described single-pole double-throw switch (SPDT) limits module with electric current and is connected, the output that described electric current limits module is connected with the specified rate input of current controller, and the output of described current controller is connected with the input of door control unit; The U605 port of described crane operation control technical module is connected with the control end of described single-pole double-throw switch (SPDT).
Height according to supply voltage, take the silicon controlled component of the varying number dividing potential drop of connecting, reduce the virtual voltage that every controllable silicon bears, regulate the voltage of stator major loop through the phase angle of the silicon controlled component of intelligence system synchronous change association, then the continuous adjusting by 0～± 60% irrelevant rotating speed of closed-loop control realization and load.
The present invention also has following prioritization scheme, described rotor control device comprises and is connected on rotor whenever join the multi-stage rotor resistance of line end, rotor contactor and the rotor contactor controller of every grade of rotor resistance of switching, each grade rotor resistance is parallel with a group rotor contactor, and the line bag of each rotor contactor seals in corresponding rotor contactor controller.Beyond ± 60% range of speeds, accelerate by open loop control Switch Rotor resistance.
The stator control device of described motor comprises the closed-loop control device of electric current.
The stator control device of described motor comprises the closed-loop control device of speed.
The closed-loop control device of described speed uses tachogenerator as the speed feedback link.
Described safety device comprises power supply transient protective device, phase protection device, position limitation protection device, temperature monitoring.
The scheme of having taked the control of stator phase angle and the control of motor rotor convert resistance to combine.(generally be-60%～+ 60% normal speed) realizes the continuous velocity control irrelevant with load in the closed loop scope of setting, and accelerates by Switch Rotor resistance beyond this scope.The accelerator from static to full speed running, it at first is the closed-loop control process.When system works, at first send signal by speed setter, its size has determined the rotating speed of motor size.Given signal and encoder or tachogenerator feedback signal are subtracted each other, i.e. Δ U=U
Give-U
Instead, its difference DELTA U delivers to adjuster, and trigger is delivered in the output of adjuster, makes it to export the pulse of certain phase shift, and controllable silicon is then exported certain voltage, and rotating speed of motor and set-point are adapted.If the actual speed of system (becomes big as load) for a certain reason when being lower than given signal value corresponding, the voltage that tachogenerator feeds back descends, the input and output of adjuster are increased, the pulse reach that trigger sends, force the controllable silicon output voltage to rise, motor speed raises, and is stabilized in institute and requires on the speed, and at this moment stator voltage has also just remained unchanged; Vice versa.
Basic principle of the present invention:
The digital high pressure stator variable voltage speed control of 10kV device is compact three-phase thyristor phase angle controller, can control single or multiple wire wound asynchronous motors under the state of closed loop and open loop.The stator variable voltage speed control device produces countertorque by two groups of additional thyristors, break-make by trigger board control thyristor, make the motor can be at four quadrant running, the stator voltage that changes motor under the effect of stator phase angle control can reach the purpose of speed governing, but the motor use still is frequency 50Hz alternating current.
The control of stator phase angle
The control of stator phase angle is to realize by the amplitude of first harmonic that changes line voltage.Given voltage increases continuously maximum by certain slope from zero, and phase angle and control time also increase continuously, make the stator voltage of motor also increase continuously, thereby speed also increase, the moment of motor by stator voltage square the ratio increase.Figure 1 shows that the speed-torque characteristic curve of the asynchronous motor of stator phase angle control.Among the figure, n
0Be synchronous speed, n
NBe the operate as normal spot speed, M
ABe the starting torque of no stator phase angle control, M
MBe motor torque, MA* is the starting torque of band stator phase angle control, and M* is the motor temporal properties, M
B* be moment of accelerating.
The control of rotor convert resistance
Change the moment of motor by Switch Rotor resistance.For fixing load, change resistance and will obtain different fixed speed n2, n3, n4, same, load changes, and speed also changes.When speed was low, rotor power output major part was converted into heat exhaustion on rotor exterior resistance, avoids motor overheated when low speed.Figure 2 shows that the not speed-torque characteristic curve of motor simultaneously of rotor resistance.Among the figure, A is that motor rotor short circuit characteristic curve B, C, D are motor rotor crosstalk resistance characteristic curves.Identical among mark implication and Fig. 1 among the figure.
The present invention has also adopted electron back to mode of braking
Suppose that system drags that constant load is accelerated with positive speed and stable operation at a point, motor is in motoring condition.Slow down or reverse instruction if having this moment, the stator variable voltage speed control device will block the forward thyristor groups and trigger reverse thyristor groups simultaneously, change the phase sequence of output voltage, switch to the countertorque operational mode, run on the b point.Motor is in the dynamic brake state, reduces speed now.At this moment, the slippery difference s=2 of motor, and stator variable voltage speed control device output full voltage.The electric current of motor is greater than starting current, and therefore, the stator variable voltage speed control device reduces output voltage at once automatically, has limited maximum current thereby allow all rotor resistances insert simultaneously.Speed when Figure 3 shows that the electronics plugging-torque factor curve.Identical among mark implication and Fig. 1 among the figure.
The present invention can guarantee to carry out smoothly adjustable-speed under the big detent torque at the single or multiple wire wound asynchronous motors of 50A～2000A to 1 kilovolt～10 kilovolts of voltages and current range, have energy-conservation, high dynamic characteristic and high accuracy, characteristics such as response speed is fast, and have the following advantages:
(1) safety, high dynamic characteristic, easy to operate, general, operation easily;
(2) can use under rugged environment, operation is level and smooth, reduces the impact to system, has very high dynamic control performance and control precision;
(3) be very effective transmission solution for transforming old electric motor system; When being used for the solution of new system, its cost performance also relatively has superiority; Upgrading is very convenient, thereby can significantly improve existing system, and improvement expenses is low.
(4) the control function realized integrated, low to contactor control and the requirement of outside chain condition; Design planning and configuration operation are few.
(5) four-quadrant driving operation, the control of stator phase angle is by reliable electronic type rotating magnetic field commutation.
(6) device adopts direct-connected structure, has reduced time and the number of times of assembling and debugging, thereby has saved investment.
The present invention has filled up the blank of 1kV～10kV high-tension winding formula asynchronous motor pressure and speed regulating system, is particularly suitable for as the occasion that hoists such as mine, deep-well.
Description of drawings
Fig. 1 is the speed-torque characteristic curve of the asynchronous motor of stator phase angle control,
Fig. 2 is the not speed-torque characteristic curve of motor simultaneously of rotor resistance,
Speed when Fig. 3 is the electronics plugging-torque factor curve,
Fig. 4 is the loop control theory block diagram of variable voltage control,
Fig. 5 is the structured flowchart of motor speed governing system,
Fig. 6 is stator main loop circuit schematic diagram,
Fig. 7 is the typical wiring figure that carries out speed governing with switching value,
Fig. 8 is the typical wiring figure that carries out speed governing with the analog switch amount.
Among the figure: 1-A1 organizes silicon controlled component, the positive inverter trigger of 2-, and 3-A2 organizes silicon controlled component; 4-B organizes silicon controlled component; the 5-motor, 6-C2 organizes silicon controlled component, and 7-C1 organizes silicon controlled component; 8-rotor control device; the 9-silicon controlled component, 10-door control unit, 11-current detector; the 12-current controller; the 13-tachogenerator, 14-current follower, 15-speed control; 16-rotor contactor controller; 17-rotor contactor, 18-rotor resistance, 19-temperature monitoring; 20-power supply transient protective device, 21-phase protection device, 22-position limitation protection device.
Embodiment
The present invention is further described below in conjunction with drawings and Examples: the digital high pressure stator variable voltage speed control of described 10kV device, the stator control device that comprises motor, the rotor control device, brake apparatus and safety device, as shown in Figure 6, the stator control device of described motor comprises the silicon controlled component 9 that is connected the motor stator terminals, forward and reverse trigger 2 that output is connected with each controllable silicon trigger electrode in the silicon controlled component 9, the control system that is connected with input with forward and reverse trigger 2, described silicon controlled component 9 has many groups, each group is multistage forward and reverse controllable silicon series connection, and each of motor stator line end that joins connects one group of silicon controlled component to a phase feeder ear or and connects two groups of silicon controlled components and be connected respectively to the two-phase feeder ear.Height according to supply voltage, take the silicon controlled component 9 of the varying number dividing potential drop of connecting, reduce the virtual voltage that every controllable silicon bears, regulate the voltage of stator major loop through the phase angle of the silicon controlled component 9 of intelligence system synchronous change association, then the continuous adjusting by 0～± 60% irrelevant rotating speed of closed-loop control realization and load.
Shown in Fig. 7,8, described rotor control device 8 comprises and is connected on whenever join rotor contactor 17 and the rotor contactor controller 16 of every grade of rotor resistance of multi-stage rotor resistance 18, switching 18 of line end of rotor.Beyond ± 60% range of speeds, accelerate by open loop control Switch Rotor resistance.
As shown in Figure 4, the stator control device of described motor comprises the closed-loop control device of electric current.
The stator control device of described motor comprises the closed-loop control device of speed.
The closed-loop control device of described speed uses tachogenerator 13 as the speed feedback link.
Described safety device comprises power supply transient protective device 20, phase protection device 21, position limitation protection device 22, temperature monitoring 19.Before system works, safety circuit should monitor whether the phase sequence mistake is arranged, faults such as the excessive reduction of voltage of phase place extreme imbalance and three phase supply.Electrical interlock is provided, guarantee that power supply trouble, phase sequence mistake, brake feedback states are undesired, temperature is crossed output alarm signal and internal lockout pulse under the high situation taking place, when fault is not got rid of, alarm signal appears again after resetting, and motor can not move.The structured flowchart of whole motor speed governing system as shown in Figure 5.
Device output switching value signal controlling rotor contactor 17 realizes that the switching of control rotor resistance 18 cooperates speed governing.The given employing master of speed makes device have level or analog quantity stepless given, and realizes speed feedback formation Closed-Loop Speed Governing System with tachogenerator 13.Can regulate rotating speed at four-quadrant.When actual speed rose to the set point of open loop control procedure, main order control began to send the instruction of switching first order rotor resistance, along with the continuous increase of actual speed, progressively switch second, third, fourth stage rotor resistance.When Switch Rotor resistance; device can block trigger impulse by the predefined time; thereby reduced the instantaneous strength of moment; guarantee that mechanical part, electrical network, motor, device can not be subjected to big impact; guaranteed that simultaneously rotor contactor 17 contacts move under no load condition, prolonged the life-span of rotor contactor 17 contacts greatly.
Because stator is by high voltage supply, the stator major loop is formed (seeing A1, B, C1 combination or A2, B, the C2 combination of Fig. 6) by 12 pairs of antiparallel controllable silicons and forward and reverse trigger, the control of controllable silicon phase angle is used for changing the voltage that is added on the motor, trigger makes the stator power commutation, and when making the trigger commutation by logic control, under no current state, automatically switch, among Fig. 6, the gating circuit among the control of controllable silicon phase angle and forward and reverse trigger pie graph 7 and Fig. 8.Because square being directly proportional of motor torque and stator voltage, so control circuit then is connected on the silicon controlled triggering angle of the every phase in the three-phase by change, changes the stator voltage of motor.The circuits for triggering plate that we use triggers controllable silicon under any specified mal-condition, can thoroughly solve temperature drift and false triggering silicon controlled problem, and the controllable silicon capacity of triggering also can reach 3000 amperes.
The contactor reversing mode of device abandoning tradition adopts the commutation of in-built electrical minor, has guaranteed dynamic responding speed and precision.The acceleration and deceleration of motor have the acceleration and deceleration slope that can arrange, and realize velocity variations stably to guarantee motor, and the mechanical impact force of motor and gear box is reduced to minimum.In addition, device is considered very comprehensive at secure context.Brakeage is provided by device, and the state of moment brake monitoring device, can block when unusual, has fault-signal to provide simultaneously.When device starts, just can provide the signal of opening brake after can setting up staring torque in advance, prevent from starting and slip hook.Elder generation's electric braking when stopping, back mechanical braking.When being reduced to set point, speed provides brake signal, but device also continues for some time output current generation moment and holds motor after motor stops the rotation, guarantee to move when brake does not almost rotate when motor comes to a complete stop relatively, and there is the sufficient time to allow brake mechanical action stroke put in place, it is minimum that mechanical wear is down to, prolong the life-span of friction plate, also effectively prevented the parking slide hook phenomenon that the action of brake mechanical trip causes when not putting in place fully.And traditional mode of braking does not generally have above-mentioned functions, almost completely realizes ramp to stop by the mechanical friction of brake, and the brake bush life-span is very short, often needs adjusting play and renewal of facing renewal more, has potential safety hazard greatly.
Analog quantity control speed governing is given an example and switching value control speed governing is given an example, and (for example lifting mechanism and translation mechanism) sees Fig. 8 and Fig. 7 respectively.
(1) speed is given
As Fig. 8, realize the stepless given of speed by the analog input terminal of control board, as Fig. 7, realize that by the switching value input terminal of control board multistage speed is given.
(2) speed feedback
Adopt analog tachogenerator 13 or digital encoder, be directly connected to the corresponding terminal of control board.
(3) motor temperature protection
Can adopt multiple motor temperature protection component commonly used such as KTY or PTC to constitute temperature monitoring 19.
(4) brake control
By installing inner logic control, detect actual speed, when being in default minimum speed substantially, motor closes brake, and turn-off current of electric time-delay back, has improved security performance greatly, has also reduced mechanical wear.But when stopping in emergency, the detection speed actual value is not closed brake immediately.
(5) speed regulator
By regulating value, the response time of regulating the speed and the adjusting time of PI (proportional integral) adjuster.
(6) start pulse
For lifting mechanism, can set the size of start pulse, open the moment that before the brake motor generation is made progress, load can not glided.
(7) motor commutation and rotor switching resistance
Device is controlled by internal logic, when reaching the contactor operating value of setting, the motor actual speed that monitors the tachometer feedback controls switching rotor contactor 17 automatically, make motor when friction speed, use different speed-torque characteristic curve (see figure 2), assurance speed and torque.The short time is blocked trigger impulse during 17 actions of rotor contactor, switches when realizing no current, prolongs rotor contactor 17 contact endurances.Specific as follows:
See Fig. 6, install built-in 5 road silicon controlled components, be respectively A1 road, A2 road, B road, C1 road, C2 road, wherein A1, B, C1 are combined as the Group of Silicon Controlled Rectifier that makes the motor forward electronic, wherein A2, B, C2 are combined as and make oppositely electronic Group of Silicon Controlled Rectifier of motor, realize actions such as Electronic Control rotating and braking by using different Group of Silicon Controlled Rectifier.
Ascent direction starts and accelerates: under holding state, device sends instructions and makes S1 be in closure state, rotor contactor KM1 closure, rotor resistance R0 is by short circuit, if to one grade of device rising (general about 10% normal speed) action command, the electronic Group of Silicon Controlled Rectifier of device use forward this moment is A1, B, C1 road controllable silicon, torque-speed curve C among Fig. 2 is followed in the motor operation, starting impulse size according to given speed and actual loading size and setting, device control A1, B, the C1 road silicon controlled angle of flow, motor is rotated in the forward, simultaneously, device detects the speed of feedback, if speed is lower than given speed, meeting strengthens the angle of flow under the maximum current prerequisite of setting being no more than, electric moter voltage is raise, be increased to given speed up to speed, if speed surpasses given speed, device can make the angle of flow reduce, and reduces rotating speed up to equaling given speed.The corresponding speed value was relevant when whether the rotor contactor moved with the action that arranges, if given speed is 60%, the corresponding speed value that S2 sets is 55%, S2 can be closed when the motor actual speed rises to 55% so, motor operation this moment is with reference to characteristic curve B among the figure 2, and thyristor operating angle is regulated according to actual feedback speed.If order is at full speed given in main order, device can progressively increase the angle of flow and export up to full voltage when speed surpasses the closed loop scope of setting, S3, S4 action is described identical with S2, move when namely reaching set point, but device can block SCR trigger pulse the short time (can arrange) during action, realize rotor contactor no current switching, reduce the impact to machinery and circuit.This moment, device was in the open loop running status.
Ascent direction slows down and returns zero-bit: lower category or when returning zero when main order upgrades on by high speed, device can block the electronic Group of Silicon Controlled Rectifier of forward immediately, open reverse electronic Group of Silicon Controlled Rectifier A2, B, C2, carry out plug braking, disconnect all rotor contactors simultaneously, make all resistance all insert rotor loop, realize maximum stalled torque output, and owing to insert the resistance maximum of rotor loop, guaranteed that the stator loop current is unlikely excessive, device can be no more than under the prerequisite of maximum current limit, and the control angle of flow is output HIGH voltage as far as possible, and quick retarding braking is realized on the decline slope that makes motor speed follow setting.
Descent direction starts and accelerates: main order provides when descending order, at first that conducting is the electronic Group of Silicon Controlled Rectifier A1 of forward, B, C1, S1, S2, S3, S4 all disconnects, this moment, device belonged to plug braking, weight is in the decline state, regulate the angle of flow according to feedback speed and realize the stator voltage adjusting, make actual speed reach set-point, when decline order is at full speed sent in main order, device can block the electronic Group of Silicon Controlled Rectifier of forward when actual speed surpasses the closed loop scope of setting, open reverse electronic Group of Silicon Controlled Rectifier A2, B, C2, and progressively make the full conducting of controllable silicon, contactor is closed successively according to the contactor operating value of setting, and load this moment drives the rotation of motor supersynchronous speed, and motor is in reverse generating state.
Descent direction lowers category and returns zero-bit: when main order is transformed into low speed decline or zero-bit or rises by descending at a high speed, device blocks Group of Silicon Controlled Rectifier A2, B, C2 immediately, open Group of Silicon Controlled Rectifier A1, B, C1 simultaneously and disconnect all rotor contactors, carry out plug braking, equally carry out the angle of flow under the maximum current situation of setting and regulate the high as far as possible voltage of output guaranteeing that electric current is no more than, because rotor loop resistance all inserts, guarantee hour braking moment maximum of relative electric current.When speed drops to mainly when making set-point, regulate output according to above-described different situations.
(8) position limitation protection
The limit signal of input makes motor deceleration by position limitation protection device 22 logic controls of installing inside or stops.
Claims (6)
1. the digital high pressure stator variable voltage speed control of 10kV device, the stator control device that comprises motor, the rotor control device, brake apparatus and safety device, it is characterized in that: the stator control device of described motor comprises the silicon controlled component (9) that is connected the motor stator terminals, forward and reverse trigger (2) that output is connected with each controllable silicon trigger electrode in the silicon controlled component (9), the control system that is connected with input with forward and reverse trigger (2), described silicon controlled component (9) has many groups, each group is multistage forward and reverse controllable silicon series connection, each of motor stator join line end connect one group of silicon controlled component to a phase feeder ear or and connect two groups of silicon controlled components and be connected respectively to the two-phase feeder ear; The stator control device of described motor also comprises crane operation control technical module, the U663 port of described crane operation control technical module is connected with speed control by the starting impulse module, the output of described speed control is connected with a contact of single-pole double-throw switch (SPDT), another contact of described single-pole double-throw switch (SPDT) is connected with 100% node, the swing arm of described single-pole double-throw switch (SPDT) limits module with electric current and is connected, the output that described electric current limits module is connected with the specified rate input of current controller, and the output of described current controller is connected with the input of door control unit; The U605 port of described crane operation control technical module is connected with the control end of described single-pole double-throw switch (SPDT).
2. the digital high pressure stator variable voltage speed control of 10kV according to claim 1 device, it is characterized in that: described rotor control device (8) comprises and is connected on rotor whenever join the multi-stage rotor resistance (18) of line end, rotor contactor (17) and the rotor contactor controller (16) of every grade of rotor resistance of switching (18), each grade rotor resistance (18) is parallel with a group rotor contactor (17), and the line bag of each rotor contactor (17) seals in corresponding rotor contactor controller (16).
3. the digital high pressure stator variable voltage speed control of 10kV according to claim 1 and 2 device, it is characterized in that: the stator control device of described motor comprises the closed-loop control device of electric current.
4. the digital high pressure stator variable voltage speed control of 10kV according to claim 1 and 2 device, it is characterized in that: the stator control device of described motor comprises the closed-loop control device of speed.
5. the digital high pressure stator variable voltage speed control of 10kV according to claim 4 device is characterized in that: the closed-loop control device of described speed uses encoder or tachogenerator (13) as the speed feedback link.
6. the digital high pressure stator variable voltage speed control of 10kV according to claim 1 device is characterized in that: described safety device comprises power supply transient protective device (20), phase protection device (21), position limitation protection device (22), temperature monitoring (19).
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| CN102336364B (en) * | 2011-08-24 | 2013-07-24 | 大连美恒电气有限公司 | Pressure-adjusting and speed-adjusting device controlled by multiple linkage brake |
| CN103762821B (en) * | 2014-02-13 | 2017-01-18 | 哈尔滨工业大学 | electromagnetic brake linear motor system and control method thereof |
| CN104868818B (en) * | 2015-05-29 | 2017-10-20 | 上海共久电气有限公司 | A kind of method and device for realizing quenching crane speed governing |
| CN105035960B (en) * | 2015-06-09 | 2017-03-29 | 杭州国电大力机电工程有限公司 | Cable crane lifting mechanism control circuit system with inversion protection function |
| CN109375008B (en) * | 2018-10-09 | 2021-04-30 | 北京精密机电控制设备研究所 | Method for detecting working state of electromagnetic lock |
| CN110611465A (en) * | 2019-09-11 | 2019-12-24 | 上海智大电子有限公司 | Main control board of voltage and speed regulating system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2291747Y (en) * | 1997-05-15 | 1998-09-16 | 华中豪 | Silicon controlled code and variable frequency power source electric control device thereof |
| CN2548359Y (en) * | 2002-06-06 | 2003-04-30 | 纪胜春 | A.C. wound motor split-phase coding and speed-govering device |
| CN2764062Y (en) * | 2005-01-14 | 2006-03-08 | 鞍山起重控制设备有限公司 | Contactless commutator for voltage and speed adjusting controller of slip-ring motor stator |
| CN201550077U (en) * | 2009-12-04 | 2010-08-11 | 武汉理工大学 | 10kV digital high-voltage stator voltage-regulating and speed-regulating device |
-
2009
- 2009-12-04 CN CN2009102541148A patent/CN102088272B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2291747Y (en) * | 1997-05-15 | 1998-09-16 | 华中豪 | Silicon controlled code and variable frequency power source electric control device thereof |
| CN2548359Y (en) * | 2002-06-06 | 2003-04-30 | 纪胜春 | A.C. wound motor split-phase coding and speed-govering device |
| CN2764062Y (en) * | 2005-01-14 | 2006-03-08 | 鞍山起重控制设备有限公司 | Contactless commutator for voltage and speed adjusting controller of slip-ring motor stator |
| CN201550077U (en) * | 2009-12-04 | 2010-08-11 | 武汉理工大学 | 10kV digital high-voltage stator voltage-regulating and speed-regulating device |
Non-Patent Citations (5)
| Title |
|---|
| 乔忠良等.交流定子调压调速在起重机上的应用.《煤矿安全》.2001,(第05期),23-25. * |
| 艾建伟.定子调压调速控制技术在行车上的应用.《电气时代》.2005,(第09期),76-77. * |
| 苏祥铎.门座起重机晶闸管定子调压调速技术的新发展.《港口装卸》.1995,(第06期),20-22. * |
| 苑经纬.《关于定子调压转子变阻的防爆绞车电控》.《煤矿机电》.1987,(第6期),29-31. * |
| 马骏等.MH数字定子调压控制系统在炼钢厂的应用.《起重运输机械》.2008,(第04期),10-14. * |
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| CN102088272A (en) | 2011-06-08 |
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