CN106685271A - Running state control method of brushless double-fed motor - Google Patents
Running state control method of brushless double-fed motor Download PDFInfo
- Publication number
- CN106685271A CN106685271A CN201610635477.6A CN201610635477A CN106685271A CN 106685271 A CN106685271 A CN 106685271A CN 201610635477 A CN201610635477 A CN 201610635477A CN 106685271 A CN106685271 A CN 106685271A
- Authority
- CN
- China
- Prior art keywords
- feed motor
- brushless dual
- control
- state
- operated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/005—Arrangements for controlling doubly fed motors
Abstract
The invention discloses a running state control method of a brushless double-fed motor. The running state control method comprises the steps of making a control system powdered on, completing self-detection of the system, and entering a standby state; and judging a target control state of the brushless double-fed motor and controlling the brushless double-fed motor to work in the target control state by the control system according to a starting-up command which is received in real time and running state of a part under the standby state and according to a judgment rule. A special structure and control requirement of the brushless double-fed motor are combined, a corresponding action is executed on each switch according to switching of different states and according to a principle of a state mechanism, so that the original complicated switching logic control process becomes simple and high-efficiency; state and fault classification of the motor is used as a switching condition, the scientific reasonableness of system action is ensured, and the running safety is also effectively guaranteed; and moreover, when a controller fault occurs in the system, the motor is maintained in an asynchronous running state by state switching, so that uninterruptible running of site operation is ensured, and the running state control method has important significance.
Description
Technical field
Present invention relates particularly to a kind of running status control method of brushless dual-feed motor.
Background technology
Brushless dual-feed motor structure is special, is different from common electric machine, and its stator terminal has two sets of stator winding, a set of to be referred to as
Power winding, is typically designed as high pressure, is directly connected to high-voltage fence, another set of to be referred to as controling winding, is typically designed as low pressure,
Low pressure winding connects low voltage electric network by controller, and using the controller speed governing to motor can be realized.With common alternating current generator
Compare, the motor is non-carbonate and commutator, it is possible to achieve large power high voltage motor is controlled with small-capacity low-pressure controller, therefore should
Motor is extensive in field application prospects such as wind-powered electricity generation, water power, blower fan water pump frequency conversion drives.
But it is special just because of brushless dual-feed motor structure, its Control system architecture and control method it is also very complicated,
Not yet realize large-scale application case at present.For single running status control from brushless dual-feed motor, with a set of common three
Cross streams electric machine control system is compared（Shown in figure one）, the brushless dual-feed motor control system of complete set（Shown in figure two）Middle bag
Containing more switching devices, need to be operated in specific running status by brushless dual-feed motor by different logical combinations, its
The reality of the running status such as power side, power-on and power-off, the asynchronous starting of brushless dual-feed motor, frequency control, shutdown, the jerk of control side
Existing and switching all refers to multiple switch operation.At present for the control method of brushless dual-feed motor, it is absorbed in double for brushless
Generating aid itself rotating speed or the control of torque, and for system is usually more ignored safely, therefore existing control method is usually
Switching manipulation opportunity or order is caused to occur abnormal so that safety problem occurs in control system.
The content of the invention
It is an object of the invention to provide one kind ensure that brushless dual-feed motor safe and stable operation and realize simple
Reliable, the efficient brushless dual-feed motor that operates running status control method.
The running status control method of this brushless dual-feed motor that the present invention is provided, comprises the steps：
S1. it is electric in brushless dual-feed motor control system；The working condition of control system judgement part, completion system self-inspection is entered
Holding state；
S2. control system is according to the power-on command and holding state lower component operation conditions for receiving, according to following judgment rule
Judge the target control state of brushless dual-feed motor：
If a. part normal operation and receiving power-on command, control brushless dual-feed motor is operated in asynchronous operation pattern；
If b. part operation exception, disconnects all power supplys, control brushless dual-feed motor is operated in disorderly closedown state, and reports
It is alert；
S3 control systems judge to be operated according to the control command and part operation conditions for receiving using following judgment rule
The target control state of the brushless dual-feed motor under asynchronous operation pattern：
If c. part operation exception, disconnects all power supplys, control brushless dual-feed motor is operated in disorderly closedown state, and reports
It is alert；
If d. part normal operation and receiving halt command, control brushless dual-feed motor is freely shut down and is operated in standby
State；
If e. part normal operation and not receiving control command, control brushless dual-feed motor is operated under synchronous rotational speed, and
Brushless dual-feed motor running status is switched into double-fed running status；
If the f. only controller operation exception and operation exception does not affect brushless dual-feed motor to be maintained at asynchronous operation pattern,
Then control system is failure to actuate；
S4. control system judges to be operated according to the control command and part operation conditions for receiving using following judgment rule
The target control state of the brushless dual-feed motor under double-fed operational mode：
If g. part operation exception, disconnects all power supplys, control brushless dual-feed motor is operated in disorderly closedown state, and reports
It is alert；
If h. part normal operation and receiving halt command, control brushless dual-feed motor operates to synchronous rotational speed, then controls
Brushless dual-feed motor processed operates in successively asynchronous work mode and holding state；
If the i. only controller operation exception and operation exception does not affect brushless dual-feed motor to be maintained at asynchronous operation pattern,
Then control brushless dual-feed motor and go to synchronous rotational speed, then control brushless dual-feed motor and operate in asynchronous work mode.
The working condition of the judgement judgement part described in step S1 and completion system self-inspection, if the specially work shape of part
State is normal, then System self-test is completed, into holding state；If the working condition exception of either component, reports to the police.
Control brushless dual-feed motor described in step S2 is operated in asynchronous operation pattern, specially closed high power switch
Contactor, will start resistance and accesses the starting-up later time that brushless dual-feed motor controls side winding, and control brushless dual-feed motor carries out different
Step starts, and will start resistance excision after the completion of asynchronous starting, while brushless dual-feed motor is controlled into side short circuit in winding, control
Brushless dual-feed motor operates in asynchronous operation pattern；
Holding state is freely shut down and be operated in control brushless dual-feed motor described in step S3, specially disconnects brushless double-fed
The power winding of machine and the connection of power line, and resistance excision will be started, control brushless dual-feed motor is shut down and is operated in standby
State.
Control brushless dual-feed motor described in step S3 is operated under synchronous rotational speed, and is controlled brushless dual-feed motor and be operated in
Double-fed running status, when the rotating speed for specially detecting brushless dual-feed motor reaches the 90% of synchronous rotational speed, connects brushless double-fed
The control side winding of machine and controller, control brushless dual-feed motor is operated under synchronous rotational speed, and turning when brushless dual-feed motor
The running status of brushless dual-feed motor is switched to double-fed running status by speed when being equal to synchronous rotational speed.
Control brushless dual-feed motor described in step S4 operates to synchronous rotational speed, then controls brushless dual-feed motor and transports successively
Row specially controls brushless dual-feed motor and operates to synchronous rotational speed in asynchronous work mode and holding state, is then turned off brushless
The connection of double feedback electric engine and controller, and by the control side winding short circuit of brushless dual-feed motor, now brushless dual-feed motor work
In asynchronous work mode, brushless dual-feed motor is then controlled again and freely shuts down and be operated in holding state.
The running status control method of this brushless dual-feed motor that the present invention is provided, with reference to the special of brushless dual-feed motor
Structure and control require, according to the principle of state machine, control system are run and is divided into 5 kinds of states, by the switching of different conditions
Corresponding action is performed to each switch, so as to complicated loaded down with trivial details switching logic control process originally be become simply efficiently；This
It is bright the switching on and shutting down operation of brushless dual-feed motor and the classification failure of system as the switching condition between each state, that is, ensure that
The scientific rationality of system acting, and effective guarantee operation safety；When there is realizing controller side failure in system, the present invention
By state switching brushless dual-feed motor can be allowed to maintain asynchronous operation state, so as to ensure that the uninterrupted fortune of field operation
OK, in the water pump of waterworks, the application scenario such as blower fan of important construction site is significant.
Description of the drawings
Fig. 1 is the schematic diagram of the common three phase alternating current motor control system of background technology.
Fig. 2 is the schematic diagram of the brushless dual-feed motor control system of the technology of the present invention.
Fig. 3 shifts schematic diagram for the state of a control of the technology of the present invention.
Specific embodiment
As shown in Fig. 2 the schematic diagram of the brushless dual-feed motor control system described in the bright technology of this law：Motor work(in figure
Rate side winding connects high pressure, and power winding number of pole-pairs is 1, and control side winding connects controller, and controling winding number of pole-pairs is 3, controller
By low-voltage power supply, separated with high-pressure side by transformer, primary input contactor KM1, pre-charge contactor are included in control system
KM2, preliminary filling resistance, controller, guidance panel, controller output contactor KM3, start resistance contactor KM4, start resistance,
Controling winding short circuit contactor KM5, brushless dual-feed motor and power side high-voltage switch gear contactor KM6.The control of the technology of the present invention
The purpose of state transition method is that all kinds of running statuses for brushless dual-feed motor, carries out the switching and control of running status
System.
The state of a control transfer schematic diagram of the technology of the present invention is illustrated in figure 3, below in conjunction with Fig. 2 traveling one is entered to the present invention
Step explanation：
1st, power-on self-test state：Power-on self-test state mainly completes on off state self-inspection（By breaker or the switch of contactor
Whether feedback of status judges it in original state）, network voltage detection, controller precharge etc..If power-on self-test not into
Work(, then system carries out corresponding fault cues, and maintains the state, until the related failure of self-inspection is excluded.In the shape
System is not responding to the power-on command of operator under state.If power-on self-test passes through, control program automatically switches to holding state.
2nd, holding state：The function such as system main completion status monitoring in the standby state, and wait operator to perform nothing
Brush double feedback electric engine Operation switch.System mode has two kinds of target control states under this kind of pattern：
1）If when detecting brushless dual-feed motor start stop switch and being changed into starting state, performing brushless dual-feed motor asynchronous starting
Operation, concrete action in this case is closed high power switch contactor KM6, closure startup resistance contactor KM4, now according to
The control theory of brushless dual-feed motor, n=60*（fp+fc）/ Pp+Pc,（N represents brushless dual-feed motor rotating speed, fp represent power around
Group power frequency, fc represents controling winding power frequency, and Pp represents power winding number of pole-pairs, and Pc represents controling winding number of pole-pairs）
Now fc=0, fp=50Hz, Pp+Pc=4）,（Synchronous speed is 60*（0+50）/（1+3）=750rpm）Now brushless dual-feed motor
The asynchronous machine common equivalent to one, proceeds by asynchronous starting, but due to starting the presence of resistance, stabilized (steady-state) speed now
Less than the synchronous rotational speed of motor, again by controling winding short circuit contactor KM5 closure after stabilization of speed, and startup Ohmic contact is disconnected
Device KM4, brushless dual-feed motor will further speed up, and now system running state automatically switches to asynchronous operation state；
2）If detecting catastrophe failure, the contactor closed in start-up course is disconnected, disconnect all power supplys, and will be brushless double
Generating aid switches to disorderly closedown state, and carries out corresponding fault alarm.
3rd, asynchronous operation state：Under asynchronous operation state, there are 4 kinds of target control states in system running state office：
1）If system detectio is to halt command, high-voltage circuit breaker contactor KM6 is disconnected, disconnects and start resistance contactor KM4,
Now by free shutdown, system switches back into holding state to brushless dual-feed motor；
2）If system detectio is to catastrophe failure or emergency stop button switch action, high-voltage circuit breaker contactor KM6 is disconnected, broken
Dynamic resistance contactor KM4 is opened, and closes corresponding protection, now brushless dual-feed motor will shut down, and system switches to failure and stops
Machine state, and carry out corresponding fault alarm；
3）If being not detected by halt command, when the close synchronous speed of brushless dual-feed motor rotating speed is detected（Such as brushless dual-feed motor
Rotating speed for synchronous rotational speed 90%）, disconnect and start resistance contactor KM4, frequency converter output contactor KM3 is then closed, by controlling
Device processed exports corresponding voltage signal to maintain brushless dual-feed motor to run in synchronous speed, and then system switches to double-fed operation shape
State；
4）If system detectio is to controller failure, but asynchronous operation is not affected, then do not carry out double-fed or shut down transition switching, and
Asynchronous operation pattern is maintained at, so as to ensure that operation field is not shut down.
4th, double-fed running status：Under double-fed running status, system mainly receives the speed governing order that operator sends, and profit
Speed governing is carried out to brushless dual-feed motor by controling winding with controller speed governing algorithm, to meet different duty requirements, is realized
The normal work of control system.Under this kind of state, system running state has 3 kinds of target control states：
1）If detecting halt command, first rotating speed is adjusted into synchronous speed, then disconnects controller output contactor KM3,
And by controling winding short circuit contactor KM5 closure, brushless dual-feed motor enters asynchronous operation state, next can be in asynchronous operation
The action for being switched to holding state is performed under state until brushless dual-feed motor is shut down；
2）If system detectio is to catastrophe failure or emergency stop button switch action, breaking controller output contactor KM3, disconnect high
Pressure side power switch contactor KM6, allows brushless dual-feed motor freely to shut down, and system switches to disorderly closedown state, and carries out phase
The fault alarm answered；
3）If system detectio is to controller failure, but asynchronous operation is not affected, then first rotating speed is adjusted into synchronous speed, then will
Controller output contactor KM3 disconnects, and closes controling winding short circuit contactor KM5, and by controling winding short circuit, system enters different
Step running status, and brushless dual-feed motor asynchronous operation is maintained in this condition.
5th, under disorderly closedown state, system is not responding to the power-on operation order of operator, and brushless dual-feed motor is protected always
Hold shutdown.Until detect all malfunctions all removing, then system cuts normal Standby state automatically.
Controller software is controlled according to five kinds of states designed by the present invention to brushless dual-feed motor, it is ensured that nothing
Brush double feedback electric engine at any time all in rationally controllable running status under, and then can perform according to different running statuses
Different control algolithm, it is ensured that system stable operation.
Claims (6)
1. a kind of running status control method of brushless dual-feed motor, comprises the steps：
S1. it is electric in brushless dual-feed motor control system；The working condition of control system judgement part, completion system self-inspection is entered
Holding state；
S2. control system is according to the power-on command and holding state lower component operation conditions for receiving, according to following judgment rule
Judge the target control state of brushless dual-feed motor：
If a. part normal operation and receiving power-on command, control brushless dual-feed motor is operated in asynchronous operation pattern；
If b. part operation exception, disconnects all power supplys, control brushless dual-feed motor is operated in disorderly closedown state, and reports
It is alert；
S3 control systems judge to be operated according to the control command and part operation conditions for receiving using following judgment rule
The target control state of the brushless dual-feed motor under asynchronous operation pattern：
If c. part operation exception, disconnects all power supplys, control brushless dual-feed motor is operated in disorderly closedown state, and reports
It is alert；
If d. part normal operation and receiving halt command, control brushless dual-feed motor is freely shut down and is operated in standby
State；
If e. part normal operation and not receiving control command, control brushless dual-feed motor is operated under synchronous rotational speed, and
The running status of brushless dual-feed motor is switched into double-fed running status；
If the f. only controller operation exception and operation exception does not affect brushless dual-feed motor to be maintained at asynchronous operation pattern,
Then control system is failure to actuate；
S4. control system judges to be operated according to the control command and part operation conditions for receiving using following judgment rule
The target control state of the brushless dual-feed motor under double-fed operational mode：
If g. part operation exception, disconnects all power supplys, control brushless dual-feed motor is operated in disorderly closedown state, and reports
It is alert；
If h. part normal operation and receiving halt command, control brushless dual-feed motor operates to synchronous rotational speed, then controls
Brushless dual-feed motor processed operates in successively asynchronous work mode and holding state；
If the i. only controller operation exception and operation exception does not affect brushless dual-feed motor to be maintained at asynchronous operation pattern,
Then control brushless dual-feed motor and go to synchronous rotational speed, then control brushless dual-feed motor and operate in asynchronous work mode.
2. the running status control method of brushless dual-feed motor according to claim 1, it is characterised in that described in step S1
Judgement judgement part working condition and completion system self-inspection, if the working condition of specially part is normal, system from
Inspection is completed, into holding state；If the working condition exception of either component, reports to the police.
3. the running status control method of brushless dual-feed motor according to claim 1, it is characterised in that described in step S2
Control brushless dual-feed motor be operated in asynchronous operation pattern, specially closed high power switch contactor will start resistance
The starting-up later time that brushless dual-feed motor controls side winding is accessed, control brushless dual-feed motor carries out asynchronous starting, and opens asynchronous
Resistance excision will be started after the completion of dynamic, while brushless dual-feed motor is controlled into side short circuit in winding, control brushless dual-feed motor operation
In asynchronous operation pattern.
4. the running status control method of the brushless dual-feed motor according to one of claim 1 ~ 3, it is characterised in that step
Holding state is freely shut down and be operated in control brushless dual-feed motor described in S3, specially disconnects the power of brushless dual-feed motor
The connection of winding and power line, and resistance excision will be started, holding state is shut down and be operated in control brushless dual-feed motor.
5. the running status control method of the brushless dual-feed motor according to one of claim 1 ~ 3, it is characterised in that step
Control brushless dual-feed motor described in S3 is operated under synchronous rotational speed, and control brushless dual-feed motor be operated in double-fed operation shape
State, when the rotating speed for specially detecting brushless dual-feed motor reaches the 90% of synchronous rotational speed, connects the control side of brushless dual-feed motor
Winding and controller, control brushless dual-feed motor is operated under synchronous rotational speed, and when the rotating speed of brushless dual-feed motor is equal to synchronously
Brushless dual-feed motor is controlled during rotating speed and is operated in double-fed running status.
6. the running status control method of the brushless dual-feed motor according to one of claim 1 ~ 3, it is characterised in that step
Control brushless dual-feed motor described in S4 operates to synchronous rotational speed, then controls brushless dual-feed motor and operates in asynchronous working successively
Pattern and holding state, specially control brushless dual-feed motor and operate to synchronous rotational speed, are then turned off brushless dual-feed motor with control
The connection of device processed, and by the control side winding short circuit of brushless dual-feed motor, now brushless dual-feed motor is operated in asynchronous working mould
Formula, then controls again brushless dual-feed motor and freely shuts down and be operated in holding state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610635477.6A CN106685271B (en) | 2016-08-05 | 2016-08-05 | The operating status control method of brushless dual-feed motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610635477.6A CN106685271B (en) | 2016-08-05 | 2016-08-05 | The operating status control method of brushless dual-feed motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106685271A true CN106685271A (en) | 2017-05-17 |
| CN106685271B CN106685271B (en) | 2019-05-21 |
Family
ID=58839876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610635477.6A Active CN106685271B (en) | 2016-08-05 | 2016-08-05 | The operating status control method of brushless dual-feed motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106685271B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108306572A (en) * | 2018-01-29 | 2018-07-20 | 西门子工厂自动化工程有限公司 | Control method, apparatus, system, processor and the terminal of brushless dual-feed motor |
| CN108322107A (en) * | 2018-01-29 | 2018-07-24 | 西门子工厂自动化工程有限公司 | Control method, apparatus, system, storage medium and the terminal of brushless dual-feed motor |
| CN109217737A (en) * | 2018-09-26 | 2019-01-15 | 湖南利能科技股份有限公司 | A kind of control system and method for double feedback electric engine |
| CN111101919A (en) * | 2019-12-27 | 2020-05-05 | 三一石油智能装备有限公司 | Sand mixing truck control method based on state machine, state machine and sand mixing truck |
| CN111676646A (en) * | 2020-05-21 | 2020-09-18 | 四川虹美智能科技有限公司 | Shutdown control method and device for washing machine |
| CN114069672A (en) * | 2021-11-30 | 2022-02-18 | 阳光电源股份有限公司 | Energy storage system control method and energy storage system |
| CN114189016A (en) * | 2021-12-06 | 2022-03-15 | 国网湖南省电力有限公司 | Battery management system alarm protection method and system based on state machine model |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101267174A (en) * | 2008-01-17 | 2008-09-17 | 中国矿业大学 | Start method and device for brushless dual-feedback electromotor |
| CN102079250A (en) * | 2009-11-30 | 2011-06-01 | 沈阳工业大学 | Brushless double-fed motor driving system of electric vehicle and control method thereof |
| CN105577065A (en) * | 2015-12-31 | 2016-05-11 | 易事特集团股份有限公司 | Brushless doubly-fed motor asynchronous starting method and apparatus |
-
2016
- 2016-08-05 CN CN201610635477.6A patent/CN106685271B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101267174A (en) * | 2008-01-17 | 2008-09-17 | 中国矿业大学 | Start method and device for brushless dual-feedback electromotor |
| CN102079250A (en) * | 2009-11-30 | 2011-06-01 | 沈阳工业大学 | Brushless double-fed motor driving system of electric vehicle and control method thereof |
| CN105577065A (en) * | 2015-12-31 | 2016-05-11 | 易事特集团股份有限公司 | Brushless doubly-fed motor asynchronous starting method and apparatus |
Non-Patent Citations (1)
| Title |
|---|
| 杜江等: "笼型转子无刷双馈电机异步运行模式的实验研究", 《中国电机工程学报》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108306572A (en) * | 2018-01-29 | 2018-07-20 | 西门子工厂自动化工程有限公司 | Control method, apparatus, system, processor and the terminal of brushless dual-feed motor |
| CN108322107A (en) * | 2018-01-29 | 2018-07-24 | 西门子工厂自动化工程有限公司 | Control method, apparatus, system, storage medium and the terminal of brushless dual-feed motor |
| CN108306572B (en) * | 2018-01-29 | 2020-03-24 | 西门子工厂自动化工程有限公司 | Method, device, system, processor and terminal for controlling brushless doubly-fed motor |
| CN109217737A (en) * | 2018-09-26 | 2019-01-15 | 湖南利能科技股份有限公司 | A kind of control system and method for double feedback electric engine |
| CN111101919A (en) * | 2019-12-27 | 2020-05-05 | 三一石油智能装备有限公司 | Sand mixing truck control method based on state machine, state machine and sand mixing truck |
| CN111101919B (en) * | 2019-12-27 | 2022-06-21 | 三一石油智能装备有限公司 | Sand mixing truck control method based on state machine, state machine and sand mixing truck |
| CN111676646A (en) * | 2020-05-21 | 2020-09-18 | 四川虹美智能科技有限公司 | Shutdown control method and device for washing machine |
| CN114069672A (en) * | 2021-11-30 | 2022-02-18 | 阳光电源股份有限公司 | Energy storage system control method and energy storage system |
| CN114189016A (en) * | 2021-12-06 | 2022-03-15 | 国网湖南省电力有限公司 | Battery management system alarm protection method and system based on state machine model |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106685271B (en) | 2019-05-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106685271A (en) | Running state control method of brushless double-fed motor | |
| CN101624969B (en) | Redundancy control system and redundancy control method for wind power generation propeller change | |
| CN105689160B (en) | A kind of closing method and device for magnetic suspension centrifuge | |
| CN204244113U (en) | A kind of control circuit of soft initiator | |
| CN107976980B (en) | System and method for controlling one-key start and stop of large-scale phase modulator DCS | |
| CN106787973A (en) | Drive control device and method for yaw motor of wind generating set | |
| CN101141112B (en) | Common DC bus based multi-frequency converter system for vessel | |
| CN111140515B (en) | Fault switching method for main circulating pump of cooling system of flexible direct-current power transmission converter valve | |
| CN104155883A (en) | Starting control method for static frequency converter (SFC) of pump storage group | |
| CN105186575A (en) | Diesel generating set parallel operation system for safety source of thermal power plant | |
| CN103825358A (en) | Hybrid power ship power supply control system with reversible shaft generator | |
| CN102817778B (en) | Method and device for preventing PLC (programmable logic controller) control system of fan from crashing | |
| CN207315565U (en) | A kind of device for controlling double startup motor | |
| CN203774864U (en) | Power-supply controlling system for hybrid-power ship | |
| CN105322582B (en) | The Emergency power supply unit realized using controllable silicon technology | |
| CN104047803B (en) | A kind of electronic feathering controlling method | |
| CN206060608U (en) | A kind of power control structure of gas turbine energized circuit | |
| CN207538974U (en) | A kind of direct current variable blade control system safety control | |
| CN203942470U (en) | The startup control circuit of a kind of pumped storage unit SFC | |
| CN207368751U (en) | A kind of thermal power plant security personnel bussed supply power supply monitoring system | |
| CN206542251U (en) | Generator switches and refueling control system | |
| CN202798108U (en) | Emergency power supply applied to main motor and stand-by motor | |
| CN214409686U (en) | Direct-current oil pump starting control system based on DCS | |
| TWI760952B (en) | Vessel power safety control system and operating method thereof | |
| CN107591896A (en) | A kind of thermal power plant security personnel bussed supply power supply monitoring system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200806 Address after: 410006 second floor, building C, M14 group, torch City, No. 359, yinpen South Road, Yuelu District, Changsha City, Hunan Province Patentee after: Hunan Shenghe pipeline direct drinking water Co., Ltd Address before: The two phase of the project wasion Technology Park No. 468 Tongzi high tech Industrial Development Zone, Hunan province Changsha slope 410205 West Road No. 11 building Patentee before: HUNAN LINENG TECHNOLOGY Co.,Ltd. |