CN107171599A - Skilled hand's behaviour's type emergency bearing oil pump control device and method - Google Patents
Skilled hand's behaviour's type emergency bearing oil pump control device and method Download PDFInfo
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- CN107171599A CN107171599A CN201710401443.5A CN201710401443A CN107171599A CN 107171599 A CN107171599 A CN 107171599A CN 201710401443 A CN201710401443 A CN 201710401443A CN 107171599 A CN107171599 A CN 107171599A
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- control
- direct current
- control device
- current generator
- oil pump
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
- H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
- H02P1/18—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual dc motor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
- H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
- H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power
- H02P7/24—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices
- H02P7/28—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices
- H02P7/285—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only
- H02P7/29—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using pulse modulation
Abstract
A kind of skilled hand behaviour type emergency bearing oil pump control device and method, it is related to the control field of emergency bearing oil pump in heat power generating system, including hard manual control device and the intelligent controlling device being connected in parallel on oil pump direct current generator, and hard manual control device and the public by-pass unit of intelligent controlling device；Described hard manual control device, receives the emergent instruction of thermal operating platform, is controlled for carrying out decompression current limliting emergency start to direct current generator under emergency conditions；Described intelligent controlling device, receives the control instruction of electric control system, for carrying out starting control to direct current generator under normal circumstances；When performing DC MOTOR CONTROL, the intelligent controlling device of the hard manual control device locking low rights of high authority；When the starting current or rotating speed of direct current generator reach the setting percentage of rated value, hard manual control device or intelligent controlling device control by-pass unit connects the armature coil positive terminal X3 of electrical source of power electrode input end X1 and direct current generator.
Description
Technical field
The present invention relates to the control of emergency bearing oil pump in heat power generating system, specially skilled hand behaviour type emergency bearing oil pump control device
And method.
Background technology
With the continuous improvement of domestic heat power generating system service requirement and continuing to develop for Power Electronic Technique, to heating power
Reliability, design technology, technological innovation of direct current lubrication control of electricity generation system etc. require more and more higher, at present, domestic heating power
The direct current oil pump control majority applied in electricity generation system uses the control design case of traditional type, utilizes D.C. contactor convert resistance
Mode, i.e., seal in high-power resistance in the armature circuit of direct current generator, when the motor is energized, and electricity is limited by resistance decompression
The starting current of motivation, is allowed to electric current or when rotating speed reaches the certain percentage of rated value, by D.C. contactor by by resistance
Road.The voltage decline abruptly of straight-flow system can be usually caused to start dc motor in this way, relay protection is influenceed
Contact adhesion and carbonization often occur for normal work, D.C. contactor, shorten the phenomenons such as dc motor service life, it is difficult to reach
To the requirement of heat power generating system operation process.And the utilization rate of electrical of traditional Starting mode is low, electric energy loss is big and heat
Produce many；It is long-term direct current network system is impacted or polluted when starting, commutate under commutator for electric motor current state contracting
Short service life, the other on-line equipment misoperations for causing common network to work.
The content of the invention
For problems of the prior art, the present invention provides a kind of skilled hand behaviour type emergency bearing oil pump control device and side
Method, can realize the smooth startup of dc motor, and starting current is not mutated, and not influence other straight-flow systems to work, meanwhile,
Skilled hand's operation truly can be achieved, so as to emergency flight control or special process control.
The present invention is to be achieved through the following technical solutions：
Skilled hand's behaviour's type emergency bearing oil pump control device, including hard manual control device and the intelligence being connected in parallel on oil pump direct current generator
Energy control device, and hard manual control device and the public by-pass unit of intelligent controlling device；
Described hard manual control device, receives the emergent instruction of thermal operating platform, under emergency conditions to direct current
Motor carries out the emergency start control of decompression current limliting；
Described intelligent controlling device, receives the control instruction of electric control system, under normal circumstances to direct current
Motor carries out starting control；
When performing DC MOTOR CONTROL, the intelligent controlling device of the hard manual control device locking low rights of high authority；
When the starting current or rotating speed of direct current generator reach the setting percentage of rated value, hard manual control device or intelligent control dress
Put the armature coil positive terminal X3 that control by-pass unit connects electrical source of power electrode input end X1 and direct current generator.
It is preferred that, described intelligent controlling device includes PWM processing modules, IGBT summation current transformers CT；IGBT leakage
Pole connects electrical source of power electrode input end X1, and emitter-base bandgap grading connects the armature coil positive terminal X3 of direct current generator, base stage connection PWM processing
The pwm pulse of module；Current Transmit is used for the input current for gathering electrical source of power；PWM processing modules are used for according to electric current
Transformer CT collection signal control IGBT output conductings, by negative voltage feedback closed loop linear regulation, are carried out to DC voltage
High frequency chopping processing, starts direct current generator.
It is preferred that, intelligent controlling device also includes the first excitation contactor KMS being arranged on excitation of direct current generator path；
First excitation contactor KMS is controlled by PWM processing modules.
It is preferred that, described hard manual control device includes hard manual control unit and definite value power resistor；Definite value work(
Rate resistor is connected between electrical source of power electrode input end X1 and the armature coil positive terminal X3 of direct current generator；Hard manual control
Unit is used for locking intelligent controlling device, by controlling definite value power resistor to start direct current generator.
It is preferred that, hard manual control device also includes the second excitation contactor being arranged on excitation of direct current generator path
KM3；Second excitation contactor KM3 is controlled by hard manual control unit.
It is preferred that, locking contact device KM is set on direct current generator on the starting path that intelligent controlling device is controlled；Direct current
Main power source switching control contactor KM1 is set on motor on the starting path that hard manual control device is controlled；Locking contact device
KM and main power source switching control contactor KM1 are controlled by hard manual control device；
When working properly, locking contact device KM is normally closed, and main power source switching control contactor KM1 is normally opened；
When under emergency conditions, locking contact device KM is normally opened, and main power source switching control contactor KM1 is normally closed.
Skilled hand's behaviour's type emergency bearing oil pump control method, skilled hand's behaviour's type emergency bearing oil pump of any one provided based on the present invention
Control device, comprises the following steps,
Step 1, when direct current generator needs to start, judge whether to start skilled hand behaviour, if then performing step 2, otherwise judge
Whether start intelligent operation, if it is perform step 3, treated if not then described skilled hand's behaviour's type emergency bearing oil pump control device
Machine, repeats step 1；
Step 2, hard manual control device input, closes main power source switching control contactor KM1, connects main power source, pass through
Definite value power resistor is depressured current limliting, starts direct current generator, until input by-pass unit short circuit definite value power electricity after starting successfully
Hinder device；The skilled hand behaviour for completing direct current generator starts；
Step 3, intelligent controlling device is put into, and closes locking contact device KM, is connected main power source, is passed through PWM processing module controls
IGBT outputs conducting processed, carries out high frequency chopping processing to DC voltage, starts direct current generator, until putting into bypass after starting successfully
Unit short circuit IGBT；Complete the intelligent starting of direct current generator.
It is preferred that, in step 2, during hard manual control device input, locking contact device is opened in hard manual control device control
KM, locking intelligent controlling device.
It is preferred that, in step 2 and step 3, connect before main power source, hard manual control device and intelligent controlling device lead to respectively
Closure the second excitation contactor KM3 and the first excitation contactor KMS is crossed, excitation of direct current generator voltage is connected.
It is preferred that, in step 1, by detecting whether that receiving the emergent instruction from thermal operating platform judges whether to start firmly
Hand is grasped；By detecting whether that receiving the control instruction from electric control system judges whether that starting intelligent control operates.
Compared with prior art, the present invention has following beneficial technique effect：
The present invention collects Modern Power Electronic Devices IGBT, PWM technology, plays initial voltage definite value limiting mode combination skill with armature
Art is in one.Parallel connections are controlled to realize comprehensive Design by the way that two kinds are started, to direct current generator co- controlling, public by-pass unit,
So that direct current generator can be able to fully ensure, safe and reliable operation is realized.Direct current oil pump is when system breaks down, thing
Therefore oil pump is reliably linked by hard manual control device with electric control system (DCS system).Under normal condition, intelligent starting
Control uses the new pulse modulation technologies of PWM, controls power electronics master devices high power semi-conductor IGBT conducting and shut-off,
By negative voltage feedback closed loop linear regulation, high frequency chopping processing is carried out to DC voltage, thus can linear regulation DC voltage
Size, reach the size of Linear Control electric current, thus, it is possible to make there is no dash current during motor start-up, reach and smoothly open
Dynamic effect.Simultaneously because Parallel Control, a distant place or local operation can be selected arbitrarily in equipment operation, not influence present load to run
State, realizes a distant place or on the spot mutually input and mutually control.And directly switching skilled hand it can be grasped in intelligent control running,
Non-impact current, present load running status is not influenceed.
Brief description of the drawings
Fig. 1 is the theory structure block diagram of control device described in present example.
Fig. 2 is the FB(flow block) of control method described in present example.
Fig. 3 is the governor circuit connection figure of intelligent controlling device described in present example.
Fig. 4 is the control principle block diagram of intelligent controlling device described in present example.
Fig. 5 is the lower direct current generator starting current characteristic schematic diagram of intelligent controlling device control described in present example.
Fig. 6 is the governor circuit connection figure of hard manual control device described in present example.
Fig. 7 is the control principle block diagram of hard manual control device described in present example.
Fig. 8 is the hard lower direct current generator starting current characteristic schematic diagram of manual control device control described in present example.
Embodiment
With reference to specific embodiment, the present invention is described in further detail, it is described be explanation of the invention and
It is not to limit.
The present invention uses two-way coordinated signals pattern, all the way as normally using, and by intelligent controlling device control, uses
PWM pulse modulation technologies, to the processing of DC voltage high frequency chopping, control power electronic power device IGBT conductings and shut-off are led to
Overvoltage negative feedback closed loop linear regulation, realizes the intelligent control of smooth starting emergency bearing oil pump.Another road leads to as Emergency use
Manual control device control really up to the mark, uses Electromagnetic Control to play initial voltage definite value limiting mode with armature, realizes that decompression current limliting is met an urgent need
Starting control.During normal work, mainly based on intelligent control.
Skilled hand behaviour type emergency bearing oil pump control device of the present invention is merged by two different control structure modes to be formed, and it is designed as
There is intelligent control function to have hard manual control function again, between the two high control of authority locking low rights control, such as Fig. 1 principles frame
Figure, both of which have it is independent on the spot with remote operation instruction input, and independent teletransmission contact point signal output, share same
Running status is shown on the spot.
Wherein, intelligent controlling device is the control model enabled when normally running, and the instruction of its remote operation is from master control electricity
Force control system (DCS system) is sent, and local operation instruction sends for the Intelligent operation button set on control device body, and two
Individual operational order connects by-pass unit automatically by artificial selection operation, intelligent controlling device, is low rights control；Hard manual control
The control model enabled during for emergent or special test, the instruction of its remote operation is from the emergent order button of thermal technology's master operation platform
Send, local operation instruction sends for skilled hand's behaviour's button that control device body is set, and two operational orders are equality cross complaint, no
Controlled by intelligent controlling device and artificial selection operation, and automatic blocking intelligent controlling device, it connects by-pass unit automatically, is
High control of authority.
Skilled hand behaviour type emergency bearing oil pump control device is merged by two different control structure modes to be formed, and it is designed as having intelligence
Energy control function has hard manual control function again, between the two high control of authority locking low rights control, such as Fig. 2 control flows frame
Figure, starts to be judged as inputting enabled instruction classification, is judged as preferentially, having hard manual control to put at once with skilled hand behaviour all the time, drops
Press current limliting to start working, automatically engaged while bypassing delay 10S, the decompression current limliting 3S that prescribes a time limit is automatically performed startup；When being grasped without skilled hand
Judge again intelligent control start, there is intelligent control to put at once, DC chopped-wave start working, while bypass with start situation, i.e.,
Automatic time delay 3S is put into after starting successfully, and two-way control output drive motor is without artificial handover operation.
When intelligent controlling device input, when being controlled, as shown in Figure 3 and Figure 4, its electrical source of power input is X1 (+)
With X2 (-), after enabled instruction is received, locking contact device KM, the second excitation contactor KMS adhesive action, same time lag at once
100mS modulate and control impulses PWM is sent afterwards, and dc source delivers to IGBT, by controlling IGBT conducting size, realizes that direct current is cut
Ripple, the linear change of control DC voltage from low to high, also limits the linear change of motor starting current from low to high,
Reach motor non-impacting start effect；Intelligent control is set to adjust its control output in time and protect by current/voltage collection feedback
Shield, measurement, realize closed-loop control, running situation realizes man-machine information alert by status display.Control output is connected to direct current by X3
Motor armature coil electrode, once gives excitation voltage and is exported by X5 to the magnet exciting coil positive pole of dc motor, motor
Two coil negative poles are directly connected with power cathode.Under normal condition, when directly initiating dc motor, starting current is about big
In more than 10 times of rated current, DC motor commutator is set to produce very big heat and loss, such as frequent starting can aggravate directly
Heat and the loss of commutator for electric motor are flowed, the service life of motor is reduced；By the operation of intelligent controlling device, reduce
The starting current of motor, also just reduces heat and the loss on DC motor commutator, extends the use of motor
Life-span.
Characteristic during intelligent control starting current is as shown in figure 5, when directly initiating dc motor, starting current is approximately more than
More than 10 times of rated current, makes DC motor commutator produce very big heat and loss, and such as frequent starting can aggravate direct current
The heat of commutator for electric motor and loss, reduce the service life of motor, and pollution is easily caused to direct current network, and power supply holds
Amount, cabling etc. are intended to put great many times, increase cost of idleness unnecessary.Controlled, can prevented completely using intelligent starting
The generation of above mentioned problem, intelligent control uses PWM pulse modulation technologies, controls power electronics master devices high power semi-conductor
IGBT conducting and shut-off, by negative voltage feedback closed loop linear regulation, high frequency chopping processing is carried out to DC voltage, thus can
The size of linear regulation DC voltage, reaches the size of Linear Control electric current, thus, it is possible to make not impact during motor start-up
Electric current, reaches smooth startup effect.Design reduces the starting current of motor, also just reduces on DC motor commutator
Heat and loss, extend service life of motor etc..
Generally speaking, intelligent controlling device, controls the transmitting of PWM pulsewidths to be modulated, controls electric power by PWM processing modules
Electron master control device high power semi-conductor IGBT conducting and shut-off；By negative voltage feedback closed loop linear regulation, to direct current
Press high frequency chopping processing；Realize that astatic velocity modulation is acted on according to proportional integration regulation, realize the reliable soft start effect of direct current generator
Really；Reach the intelligent control purpose of smooth starting emergency bearing oil pump.
During normal work, mainly based on intelligent control, controllable 1.5 times in rated current of its starting current started
Delay 10S automatically engages bypass after journey terminates, and intelligent control starter is transferred to online hot standby state automatically；In the present invention,
, can on the spot or a distant place starts hard manual control when occurring abnormal such as intelligent control, it is the first authority that it, which is operated, not by intelligent control
Locking, it starts controllable 2.5-3 times in rated current of immediate current.Two kinds of control operations and teletransmission status signal are independently to set
Meter, be respectively provided with the spot with distant place start stop operation, realize truly active and standby cooperation operation, it is ensured that the safety of onsite application,
Reliability service requirement.
Wherein, the general principle of intelligent control is that PWM switches on and off power supply by a fixed frequency, and as needed
Change in a cycle the time ratio (dutycycle) that switches on and off to change " dutycycle " of voltage on armature of direct current motor, from
And change average voltage, the rotating speed of controlled motor.In pwm speed control system, its speed increase when electrical power, motor breaks
Its speed lowers when electric.As long as changing the time of switching electricity according to certain rule, you can controlled motor rotating speed.And use
To straight-flow system without impact during the continuous speed regulation system start and stop of PWM technological maheups, and with starting small power consumption, stable
The characteristics of.
Large power semiconductor device IGBT has operating switch frequency high, and saturation pressure reduction, leakage current is small, input impedance
Height, the features such as voltage drives.In governing system, using the armature power supply that dc motor is controlled by control amplifier.
The average value of armature voltage is：
Uav=Ton/T.Us=ρ Us, wherein ρ=ton/ T is referred to as dutycycle.
From formula, when changing dutycycle, it is possible to obtain flat on different motor average speed Vd and armature
Equal voltage Uav, so as to reach the purpose of speed regulating control.In DC motor Driver control circuit, pwm signal is by PWM processing modules
In PLC control circuits provide, and isolate PWM process circuits, motor through high speed optoelectronic therein and drive logical AND amplifying circuit
Afterwards, driving power device IGBT switch changes average voltage on armature of direct current motor, so that the rotating speed of controlled motor, is realized
Direct current generator PWM speed-adjusting starts.
KM is with soft throwing control design case in circuit, and electricity is without impact input in realization, it is to avoid power transmission moment impact is to higher level's control
The work influence of switch, reliably puts into electrical source of power.Intelligent control is received after enabled instruction, and total head once gives KMS immediately,
Ensure that excitation is set up, according to logic judgment and administrative analysis, produce PWM modulation signal, by PWM processing modules output driving electricity
Power electronic large power device IGBT, PWM modulation signal is exported with determining frequency modulation than control, according to motor start-up property interval, is adopted
Take different startup control modes, reach the operation of motor smooth non-impacting start, make dc motor intrinsic mechanical property and
Artificial influence, the electric drive system stable operation of mechanical property, armature-reaction to mechanical property etc. keeps good curve work.
After task to be launched terminates, intelligent control exports bypass run signal automatically, by external bypass control delay input, loaded work piece
Electric current provides operation by bypass, and intelligent control is in online hot standby state, completes intelligent control and starts control.
In this preferred embodiment, power device IGBT switching frequencies fs=20kHz, VCEs minimum voltage are working power voltage
3 times, VGEs is not more than 20V, and IC minimum currents are calculated as below：
Wherein, PD is motor nominal power, and φ is direct current drive engine efficiency.
When hard manual control device is put into, as shown in Figure 6 and Figure 7, using electromagnetism master devices to DC electric motor
Pivot plays initial voltage definite value limiting mode and started, and starts voltage according to it or the bypass of time automatic switching is run, realize decompression current limliting
Control effect is quick started, the hard manual control purpose of emergency start emergency bearing oil pump is reached.Specifically, passing through definite value power resistor
The control method of decompression limitation load current realizes the operation of emergency flight control or test run, is calculated not according to motor power (output)
With fixed value resistance and execution main device, so that change motor start-up voltage, the rotating speed of controlled motor.When electrical power speed increases
Timing of plus one or during 10S, hard manual control exports by-passing signal automatically, and intelligent control exports bypass run signal automatically, by outer
Portion's by-pass unit control input, loaded work piece electric current provides operation by by-pass unit, and skilled hand behaviour starts control and automatically exited from, completes
Skilled hand behaviour starts control.Characteristic during hard manual control starting current is as shown in Figure 8.
In the present invention, intelligent control bypass is a public by-pass unit with the bypass of hard manual control, each other independent fortune
Capable not to be affected, two control outputs directly in parallel can access dc motor, without adding switching control again.
On the basis of described above, the present invention can be implemented function such as.
1. lock operation is indicated：Any operational order is locked, makes the clear and definite command source of operations staff.
2. fault self-diagnosis：Control device can voluntarily be diagnosed before operation or in startup optimization currently can normal work,
Indicate in time and teletransmission status information, it is ensured that equipment safety operation.
3. locking switching：Directly switching skilled hand it can be grasped in intelligent control normal course of operation, now non-impact current is produced,
Intelligent control automatic blocking stops simultaneously, and locking is only limitted to skilled hand's behaviour's locking intelligent control.
4. skilled hand operates：Be mainly used in emergency starting, when intelligent control is abnormal or normally runs, its not by a distant place or
Position limitation is directly operated, and realizes skilled hand behaviour truly.
5. analog output：Realize that the master die analog quantity of load motor armature coil startup optimization current value is defeated by CT
Go out, 4-20mA, can access DCS system.
6. power monitoring：Control device can to electrical source of power and control power supply real-time monitoring, in time warning on the spot and
Distant place dc source it is whether normal, while design shows supply voltage and running current monitor value on the spot.
7. temperature alarm：When electric start or the operation of normal time, when device internal power device temperature is more than 65-75 DEG C,
Alarm at once, but be not automatically stopped current operation, need artificial skilled hand behaviour.
8. status display：Control cabinet door design point indicate show current operating state be out of service, startup optimization,
The status display such as error protection and a distant place or Work in Place.
9. synchronous remote signalling output：Shut down, protect, running, operational mode is selected, being no source contact output, contact rating
For AC250V/5A.
10. distant place control input：The control of DCS system startup-shutdown, the control of skilled hand's behaviour's startup-shutdown, main-piping pressure start control,
It is instantaneous contact point signal.
11. main-piping pressure is controlled：When occur main-piping pressure it is too low when, can automatic linkage start control, it is controlled not by " remote
Side " or " on the spot " state limit.
12. a distant place or state is set online on the spot：Such as after " on the spot " state startup optimization is normal, arbitrarily state can be set
It is set in " distant place ", equipment keeps normal work unaffected；, can be arbitrarily by state such as after " distant place " state startup optimization is normal
It is set to " on the spot ", equipment keeps normal work unaffected.
Claims (10)
1. skilled hand's behaviour's type emergency bearing oil pump control device, it is characterised in that including the skilled hand's manipulation being connected in parallel on oil pump direct current generator
Device and intelligent controlling device processed, and hard manual control device and the public by-pass unit of intelligent controlling device；
Described hard manual control device, receives the emergent instruction of thermal operating platform, under emergency conditions to direct current generator
Carry out the emergency start control of decompression current limliting；
Described intelligent controlling device, receives the control instruction of electric control system, under normal circumstances to direct current generator
Carry out starting control；
When performing DC MOTOR CONTROL, the intelligent controlling device of the hard manual control device locking low rights of high authority；When straight
When the starting current or rotating speed for flowing motor reach the setting percentage of rated value, hard manual control device or intelligent controlling device control
By-pass unit processed connects the armature coil positive terminal X3 of electrical source of power electrode input end X1 and direct current generator.
2. skilled hand behaviour type emergency bearing oil pump control device according to claim 1, it is characterised in that described intelligent control dress
Put including PWM processing modules, IGBT summation current transformers CT；IGBT drain electrode connection electrical source of power electrode input end X1, emitter-base bandgap grading
The armature coil positive terminal X3 of direct current generator is connected, base stage connects the pwm pulse of PWM processing modules；Current Transmit is used for
Gather the input current of electrical source of power；PWM processing modules are used to control IGBT outputs according to the collection signal of Current Transmit
Conducting, by negative voltage feedback closed loop linear regulation, high frequency chopping processing is carried out to DC voltage, direct current generator is started.
3. skilled hand behaviour type emergency bearing oil pump control device according to claim 2, it is characterised in that intelligent controlling device is also wrapped
Include the first excitation contactor KMS being arranged on excitation of direct current generator path；First excitation contactor KMS is by PWM processing modules
Control.
4. skilled hand behaviour type emergency bearing oil pump control device according to claim 1, it is characterised in that described hard manual control
Device includes hard manual control unit and definite value power resistor；Definite value power resistor is connected to electrical source of power electrode input end
Between X1 and the armature coil positive terminal X3 of direct current generator；Hard manual control unit is used for locking intelligent controlling device, passes through control
Formulation value power resistor starts direct current generator.
5. skilled hand behaviour type emergency bearing oil pump control device according to claim 4, it is characterised in that hard manual control device is also
Including the second excitation contactor KM3 being arranged on excitation of direct current generator path；Second excitation contactor KM3 is by hard manual control
Unit is controlled.
6. skilled hand behaviour type emergency bearing oil pump control device according to claim 1, it is characterised in that by intelligence on direct current generator
Locking contact device KM is set on the starting path of control device control；The starting controlled on direct current generator by hard manual control device
Main power source switching control contactor KM1 is set on path；Locking contact device KM and main power source switching control contactor KM1 are by hard
Manual control device is controlled；
When working properly, locking contact device KM is normally closed, and main power source switching control contactor KM1 is normally opened；
When under emergency conditions, locking contact device KM is normally opened, and main power source switching control contactor KM1 is normally closed.
7. skilled hand's behaviour's type emergency bearing oil pump control method, it is characterised in that based on the skilled hand behaviour described in claim 1-6 any one
Type emergency bearing oil pump control device, comprises the following steps,
Step 1, when direct current generator needs to start, judge whether to start skilled hand behaviour, if then performing step 2, otherwise judge whether
Start intelligent operation, if it is perform step 3, it is standby if not then described skilled hand's behaviour's type emergency bearing oil pump control device,
Repeat step 1；
Step 2, hard manual control device input, closes main power source switching control contactor KM1, connects main power source, pass through definite value
Power resistor is depressured current limliting, starts direct current generator, until putting into by-pass unit short circuit definite value power resistor after starting successfully；
The skilled hand behaviour for completing direct current generator starts；
Step 3, intelligent controlling device is put into, and closes locking contact device KM, is connected main power source, is controlled by PWM processing modules
IGBT output conductings, carry out high frequency chopping processing to DC voltage, start direct current generator, until input bypass is single after starting successfully
First short circuit IGBT；Complete the intelligent starting of direct current generator.
8. skilled hand behaviour type emergency bearing oil pump control method according to claim 7, it is characterised in that in step 2, skilled hand's manipulation
During device input processed, locking contact device KM, locking intelligent controlling device are opened in hard manual control device control.
9. skilled hand behaviour type emergency bearing oil pump control method according to claim 7, it is characterised in that in step 2 and step 3,
Connect before main power source, hard manual control device and intelligent controlling device are respectively by closing the second excitation contactor KM3 and first
Excitation contactor KMS, connects excitation of direct current generator voltage.
10. skilled hand behaviour type emergency bearing oil pump control method according to claim 7, it is characterised in that in step 1, passes through inspection
Whether survey, which receives the emergent instruction from thermal operating platform, judges whether to start skilled hand behaviour；By detecting whether to receive from electric power
The control instruction of control system judges whether to start intelligent control operation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710401443.5A CN107171599B (en) | 2017-05-31 | 2017-05-31 | Skilled hand's behaviour's type emergency bearing oil pump control device and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710401443.5A CN107171599B (en) | 2017-05-31 | 2017-05-31 | Skilled hand's behaviour's type emergency bearing oil pump control device and method |
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| CN107171599A true CN107171599A (en) | 2017-09-15 |
| CN107171599B CN107171599B (en) | 2019-05-21 |
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| CN201710401443.5A Active CN107171599B (en) | 2017-05-31 | 2017-05-31 | Skilled hand's behaviour's type emergency bearing oil pump control device and method |
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| CN114105026A (en) * | 2021-10-13 | 2022-03-01 | 华能汕头海门发电有限责任公司 | Oil pump control system with double IGBTs connected in parallel and double segmented resistors |
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| CN114105026A (en) * | 2021-10-13 | 2022-03-01 | 华能汕头海门发电有限责任公司 | Oil pump control system with double IGBTs connected in parallel and double segmented resistors |
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| CN107171599B (en) | 2019-05-21 |
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