CN106301090A - A kind of weak electricity measuring system and method controlling equipment based on intelligent soft starter - Google Patents
A kind of weak electricity measuring system and method controlling equipment based on intelligent soft starter Download PDFInfo
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- CN106301090A CN106301090A CN201610919384.6A CN201610919384A CN106301090A CN 106301090 A CN106301090 A CN 106301090A CN 201610919384 A CN201610919384 A CN 201610919384A CN 106301090 A CN106301090 A CN 106301090A
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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
- H02P1/26—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual polyphase induction motor
- H02P1/28—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual polyphase induction motor by progressive increase of voltage applied to primary circuit of motor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/175—Indicating the instants of passage of current or voltage through a given value, e.g. passage through zero
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R25/00—Arrangements for measuring phase angle between a voltage and a current or between voltages or currents
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/40—Testing power supplies
- G01R31/42—AC power supplies
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor And Converter Starters (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
The invention discloses a kind of weak electricity measuring system controlling equipment based on intelligent soft starter, the described input of embedded processing module is connected with the data terminal of Signal control Center, outfan at Signal control Center is connected with signal processing module by main circuit, the outfan of described signal processing module is connected with the data terminal of embedded processing module, input in embedded processing module is also associated with voltage detecting circuit, described main circuit is internally installed control starting device of motor, use the process chip of LPC2378 series, and use ARM7TDMI S processor, operating frequency is the highest can reach 72MHz；The data terminal of described real-time clock module uses host computer to be controlled, and utilizes level translator to realize the function that voltage is controlled, it is possible to reaches light current and drives the purpose of forceful electric power, improves circuit performance reliability.
Description
Technical field
The present invention relates to weak electricity measuring field, particularly relate to a kind of weak electricity measuring system controlling equipment based on intelligent soft starter
System and method.
Background technology
Along with electronic technology develop rapidly and a large amount of of electronic power components occur and the most perfect, traditional being used for is controlled
The start modes such as the method for electric motor starting processed such as thermistor, self-coupling voltage reducing, string resistance or reactance disappear the most from the market.Mesh
Front mainly soft starter and the converter being used for controlling starting asynchronous motor.Owing to the price of converter is that IGCT motor is soft
Several times of starter even tens times, electrical characteristic is difficult to grasp, controls process complicated, and domestic consumer is beyond affordability.And pass
The IGCT electric machine soft starting controller of system cannot realize the implementing monitoring to starting process, does not have WEB server function, no
The communication mechanism of B/S pattern can be set up to realize the control based on network of soft starter, the paces of the development that is out of step with the times.
Since entering 21st century, with the proposition of intelligent grid, the fast-developing and embedded work of computer technology
Industry controls the Net-work Demands of equipment.The developing direction that built-in industrial controls changes, and is meeting the premise of basic function
Under start to turn to networking, Internet of Things.And the In Asynchronous Motor Soft Starter equipment of main flow can only communicate with main frame, but now
Can not be directly accessed in the middle of Ethernet, it is impossible to provide intelligent terminal for intelligent grid and then realize intelligent power distribution.The most brilliant lock
Pipe soft starter is the control realization by sine wave blocks position to the control of voltage x current.Its key technology is three
The raising of interference free performance when the collection of cross streams supply voltage zero cross signal and zero cross signal extract.Most soft starters
Use transformer pressure-reducing or voltage, current transformer to obtain its zero crossing, disadvantage of this is that phase offset and anti-
Interference is poor.
Summary of the invention
For problem above, the invention provides a kind of weak electricity measuring system and side controlling equipment based on intelligent soft starter
Method, power synchronization signal testing circuit within the system is made up of rapid light coupling circuit and multistep sequence circuit, this side
The advantage that case is implemented is strong interference immunity, and phase-detection is good, electric current excessive time in addition in order to limit starting, and controller uses single
Single nerve PID algorithm, can effectively solve the problem in background technology.
To this end, the invention provides a kind of weak electricity measuring system controlling equipment based on intelligent soft starter, described embedding
The input of formula processing module is connected with the data terminal of Signal control Center, at the outfan of Signal control Center by main electricity
Road is connected with signal processing module, and the outfan of described signal processing module is connected with the data terminal of embedded processing module
Connecing, the input in embedded processing module is also associated with voltage detecting circuit, and described main circuit includes three-phase alternating-current supply mould
Block, thyristor voltage regulation module, voltage zero-crossing signal detection module, current motor on-load voltage measurement module；
Three-phase alternating current source module, including current synchronization detection module and voltage detection module, can be used to detect three-phase
The position of the zero crossing of voltage, thus calculate the angle of current lagging voltage；
Thyristor voltage regulation module, carrys out controlled loading to motor by controlling the conducting of forward and reverse the most totally six road IGCTs
On voltage, after being processed by closed loop control algorithm by signal export；
Voltage zero-crossing signal detection module, can calculate the big of afterflow angle by the position of electric current and voltage over zero
Little；
Current motor on-load voltage measurement module, the voltage over zero come according to detection and the angle of flow calculated come smart
Determine that trigger position and then the controlled loading voltage of IGCT realize the real-time control to electric current..
Described main circuit is internally installed control starting device of motor, uses the process chip of LPC2378 series, and makes
Using ARM7TDMI-S processor, operating frequency is the highest can reach 72MHz；Described embedded processing module be internally provided with reality
Time clock module, and real-time clock module data terminal use host computer be controlled, and utilize level translator realize electricity
Press controlled function；The input of described main circuit is also associated with failure detector circuit, the input of described failure detector circuit
Directly by input key-press module, the phase place within circuit, frequency can also be detected, simultaneous faults testing circuit defeated
Enter end and be also associated with electrical fault protection module；Described embedded processing module uses the internal distinctive SRAM of motor control chip
Storage data, and also Ethernet interface external static number memorizer can be passed through.
Described Signal control Center also includes signal isolation circuit and RS485 communication module, and described signal isolation circuit connects
Receive the pulse signal from starting impulse signaling module, utilize RS485 communication module the data after signal processing to be gone out,
And be stored in data base；Described signal processing module also includes current effective value testing circuit summation current transformer, described electricity
The outfan of stream RMS to DC circuit is connected with the input of current transformer by A/D modular converter；Described voltage is examined
Slowdown monitoring circuit includes that motor electric energy computing module and SCR protect testing circuit, and the outfan of described motor electric energy computing module also connects
Being connected to LCD MODULE, the outfan of described SCR protection testing circuit is also associated with relay module, in SCR protection detection
The data terminal of circuit is also associated with phase-detection meter.
Additionally the present invention have also been devised a kind of weak electricity measuring method controlling equipment based on intelligent soft starter, as follows including people
Step:
S1, control electric motor starting chip with embedded system as core, it is provided that powerful operating system and setting up not
The built-in function of congenerous；
S2, utilize electric motor starting chip that start-up parameters is monitored in real time, and design operable interface, it is possible to realize
To liquid crystal interface switching with to starting and protecting the relevant data such as motor to modify；
S3, utilize real-time clock that the time is configured, then realize soft starter and start one time three at regular intervals
Phase Induction Machines, enables threephase asynchronous machine to keep normal condition for a long time；
S4, the switching being realized different interface by button and operation and the setting of 200 motor starting parameters, and will
Data are stored in outer extension memory, can realize soft starter energy when there is catastrophe failure according to the wireless signal received
Enough make chip reset；
S5, in programming Control module, download operation, and in the parameter of setting and the logout of starting being saved in
In portion ROM or external ROM.
Compared with prior art, the invention has the beneficial effects as follows: the weak electricity measuring of equipment should be controlled based on intelligent soft starter
System, power synchronization signal testing circuit within the system is made up of rapid light coupling circuit and multistep sequence circuit, this
The advantage that scheme is implemented is strong interference immunity, and phase-detection is good, electric current excessive time in addition in order to limit starting, and controller uses
Mono-neural self-adaptive PID control algorithm, stator current and rotor current are played significantly tune at the electric motor starting initial stage by this algorithm
Joint effect.Electric current and motor speed steadily can be risen by the curve in design.In control, output voltage will not occur significantly
Saltus step, it is also possible to adjust the mathematic parameter of control according to actual produced problem in time.Output controls to use the rectangle of 100kHZ
Pulsed drive transformator, realizes strong and weak electricity by transformator and isolates, it is achieved light current drives the purpose of forceful electric power, and improving circuit performance can
By property.
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram；
Fig. 2 is main circuit internal structure schematic diagram of the present invention；
Fig. 3 is electrical block diagram of the present invention.
In figure: 1-embedded processing module；2-host computer；3-real-time clock module；4-signal processing module；5-electric current is mutual
Sensor；6-A/D modular converter；7-current effective value testing circuit；8-voltage detecting circuit；9-relay module；10-phase place is examined
Survey meter；11-SCR protects testing circuit；12-motor electric energy computing module；13-LCD MODULE；14-Signal control Center；
15-signal isolation circuit；16-starting impulse signaling module；17-RS485 communication module；18-main circuit；19-data base；20-
Failure detector circuit；21-inputs key-press module；22-three-phase alternating current source module；23-current motor on-load voltage measurement module；
24-thyristor voltage regulation module；25-voltage zero-crossing signal detection module；26-digital memory；27-electrical fault protection module；
28-current synchronization detection module；29-voltage detection module；30-controls starting device of motor.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise
Embodiment, broadly falls into the scope of protection of the invention.
Embodiment:
Referring to Fig. 1, Fig. 2 and Fig. 3, the present invention provides a kind of technical scheme: a kind of based on intelligent soft starter control equipment
Weak electricity measuring method, comprise the following steps:
S1, control electric motor starting chip with embedded system as core, it is provided that powerful operating system and setting up not
The built-in function of congenerous；
S2, utilize electric motor starting chip that start-up parameters is monitored in real time, and design operable interface, it is possible to realize
To liquid crystal interface switching with to starting and protecting the relevant data such as motor to modify；
S3, utilize real-time clock that the time is configured, then realize soft starter and start one time three at regular intervals
Phase Induction Machines, enables threephase asynchronous machine to keep normal condition for a long time；
S4, the switching being realized different interface by button and operation and the setting of 200 motor starting parameters, and will
Data are stored in outer extension memory, can realize soft starter energy when there is catastrophe failure according to the wireless signal received
Enough make chip reset；
S5, in programming Control module, download operation, and in the parameter of setting and the logout of starting being saved in
In portion ROM or external ROM.
Described embedded processing module 1 is internally installed control starting device of motor 30, uses the process of LPC2378 series
Chip, and use ARM7TDMI-S processor, operating frequency is the highest can reach 72MHz；Described embedded processing module 1
It is internally provided with real-time clock module 3, and real-time clock module 3 uses host computer 2 to be controlled, and utilize level translator
Realize the function that voltage is controlled；Described input key-press module 21 can be by failure detector circuit 20 directly to the phase within circuit
Position, frequency detect, and simultaneous faults detects the input on electric 20 tunnels and is also associated with electrical fault protection module 27；Described extend out
Memorizer uses the internal distinctive SRAM of motor control chip, and also can be stored by the external static number of Ethernet interface
Device 26；The input of described embedded processing module 1 is connected with the data terminal of Signal control Center 14, in signal control
The outfan of the heart 14 is connected with signal processing module 4 by main circuit 18, the outfan of described signal processing module 4 and embedding
The data terminal of formula processing module 1 is connected, and the input in embedded processing module 1 is also associated with voltage detecting circuit 8.
Described main circuit 18 includes that three-phase alternating current source module 22, thyristor voltage regulation module 24, voltage zero-crossing signal detect
Module 25, current motor on-load voltage measurement module 23；
Three-phase alternating current source module 22, including current synchronization detection module 28 and voltage detection module 29, can be used to examine
Survey the position of the zero crossing of three-phase voltage, thus calculate the angle of current lagging voltage；
Thyristor voltage regulation module 24, carrys out controlled loading to electronic by controlling the conducting of forward and reverse the most totally six road IGCTs
Voltage on machine, is exported signal after being processed by closed loop control algorithm；
Voltage zero-crossing signal detection module 25, can calculate the big of afterflow angle by the position of electric current and voltage over zero
Little；
Current motor on-load voltage measurement module 23, the voltage over zero come according to detection and the angle of flow calculated come
Accurately determine that trigger position and then the controlled loading voltage of IGCT realize the real-time control to electric current.
Described Signal control Center 14 also includes signal isolation circuit 15 and RS485 communication module 17, and described signal is isolated
Circuit 15 receives the pulse signal from starting impulse signaling module 16, utilizes RS485 communication module 17 by after signal processing
Data are gone out, and are stored in data base 19；Described signal processing module 4 also includes current effective value testing circuit 7 He
Current transformer 5, the outfan of described current effective value testing circuit 7 is defeated by A/D modular converter 6 and current transformer 5
Enter end to be connected；Described voltage detecting circuit 8 includes that motor electric energy computing module 12 and SCR protects testing circuit 11, described electricity
The outfan of dynamo-electric energy computing module 12 is also associated with LCD MODULE 13, the outfan of described SCR protection testing circuit 11
Being also associated with relay module 9, the data terminal at SCR protection testing circuit 11 is also associated with phase-detection meter 10.
Described electric machine soft starting is mainly by periodically turning on and off the angle of flow position of IGCT, and then controlled loading
Three-phase voltage on threephase asynchronous machine.Continuous adjustability is realized by the consecutive variations of trigger position；Control signal to be passed through
Microcontroller sends weak domination signal, be then passed through circuit conversion be control IGCT control pole signal, promote power end and
The reliable conducting of load end；There is provided the power supply of 12V to the transformator in three-phase drive circuit, in addition it is also necessary to be designed as able to programme simultaneously
Input provides the internal electric source of 24V and outside 5V power supply.The Reliable Design of power circuit is the normal work of whole soft start
The energy providing particular importance ensures.
The operation principle of the present invention: the weak electricity measuring system of equipment should be controlled based on intelligent soft starter, within the system
Power synchronization signal testing circuit is made up of rapid light coupling circuit and multistep sequence circuit, and the advantage that this scheme is implemented is anti-
Interference is strong, and phase-detection is good, and electric current excessive time in addition in order to limit starting, controller uses single neuron self-adaptive PID controller
Algorithm, stator current and rotor current are played obvious regulating effect at the electric motor starting initial stage by this algorithm.Electric current and motor
Rotating speed steadily can be risen by the curve in design.In control, output voltage will not occur obvious saltus step, it is also possible to according to reality
Border produced problem adjusts the mathematic parameter of control in time.Output controls to use the rectangular pulse driving transformer of 100kHZ, logical
Cross transformator and realize strong and weak electricity isolation, it is achieved light current drives the purpose of forceful electric power, improves circuit performance reliability.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Any amendment, equivalent and the improvement etc. made within god and principle, should be included within the scope of the present invention.
Claims (9)
1. the weak electricity measuring system controlling equipment based on intelligent soft starter, it is characterised in that include embedded processing module
(1) input of, described embedded processing module (1) is connected, in signal control with the data terminal of Signal control Center (14)
The outfan at center processed (14) is connected with signal processing module (4) by main circuit (18), described signal processing module (4)
Outfan is connected with the data terminal of embedded processing module (1), and the input in embedded processing module (1) is also associated with electricity
Pressure testing circuit (8), described main circuit (18) includes three-phase alternating current source module (22), thyristor voltage regulation module (24), voltage
Zero cross signal detection module (25), current motor on-load voltage measurement module (23)；
Three-phase alternating current source module (22), including current synchronization detection module (28) and voltage detection module (29), can be used to
The position of the zero crossing of detection three-phase voltage, thus calculate the angle of current lagging voltage；
Thyristor voltage regulation module (24), carrys out controlled loading to motor by controlling the conducting of forward and reverse the most totally six road IGCTs
On voltage, after being processed by closed loop control algorithm by signal export；
Voltage zero-crossing signal detection module (25), can calculate the big of afterflow angle by the position of electric current and voltage over zero
Little；
Current motor on-load voltage measurement module (23), the voltage over zero come according to detection and the angle of flow calculated come smart
Determine that trigger position and then the controlled loading voltage of IGCT realize the real-time control to electric current.
2. control the weak electricity measuring system of equipment as claimed in claim 1 based on intelligent soft starter, it is characterised in that described master
Circuit (18) is internally installed control starting device of motor (30), uses the process chip of LPC2378 series, and uses
ARM7TDMI-S processor, operating frequency is the highest can reach 72MHz.
3. control the weak electricity measuring system of equipment as claimed in claim 1 based on intelligent soft starter, it is characterised in that described embedding
Enter formula processing module (1) is internally provided with real-time clock module (3), and the data terminal of real-time clock module (3) uses upper
Machine (2) is controlled, and utilizes level translator to realize the function that voltage is controlled.
4. control the weak electricity measuring system of equipment as claimed in claim 1 based on intelligent soft starter, it is characterised in that described master
The input of circuit (18) is also associated with failure detector circuit (20), and the input of described failure detector circuit (20) can also be straight
Connected input key-press module (21) phase place within circuit, frequency are detected, simultaneous faults testing circuit (20) defeated
Enter end and be also associated with electrical fault protection module (27).
5. control the weak electricity measuring system of equipment as claimed in claim 1 based on intelligent soft starter, it is characterised in that described embedding
Entering formula processing module (1) uses the internal distinctive SRAM of motor control chip to store data, and also can be connect by Ethernet
The external static number memorizer (26) of mouth.
6. control the weak electricity measuring system of equipment as claimed in claim 1 based on intelligent soft starter, it is characterised in that described letter
Number control centre (14) also includes signal isolation circuit (15) and RS485 communication module (17), described signal isolation circuit (15)
Receive the pulse signal from starting impulse signaling module (16), utilize RS485 communication module (17) by the number after signal processing
According to going out, and it is stored in data base (19).
The weak electricity measuring system controlling equipment based on intelligent soft starter the most according to claim 6, it is characterised in that described
Signal processing module (4) also includes current effective value testing circuit (7) summation current transformer (5), and described current effective value detects
The outfan of circuit (7) is connected by the input of A/D modular converter (6) with current transformer (5).
The weak electricity measuring system controlling equipment based on intelligent soft starter the most according to claim 6, it is characterised in that described
Voltage detecting circuit (8) includes motor electric energy computing module (12) and SCR protection testing circuit (11), and described motor electric energy calculates
The outfan of module (12) is also associated with LCD MODULE (13), and the outfan of described SCR protection testing circuit (11) also connects
Being connected to relay module (9), the data terminal at SCR protection testing circuit (11) is also associated with phase-detection meter (10).
9. control a weak electricity measuring method for equipment based on intelligent soft starter, comprise the following steps:
S1, control electric motor starting chip with embedded system as core, it is provided that powerful operating system and set up different merit
The built-in function of energy；
S2, utilize electric motor starting chip that start-up parameters is monitored in real time, and design operable interface, it is possible to realize liquid
Brilliant interface switching and to starting and the relevant data such as protection motor are modified；
S3, utilize real-time clock that the time is configured, then realize soft starter start at regular intervals one time three different
Step motor, enables threephase asynchronous machine to keep normal condition for a long time；
S4, the switching being realized different interface by button and operation and the setting of 200 motor starting parameters, and by data
It is stored in outer extension memory, soft starter can be realized according to the wireless signal received and can make when there is catastrophe failure
Chip reset；
S5, in programming Control module, download operation, and the parameter of setting and the logout of starting are saved in inside
In ROM or external ROM.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610919384.6A CN106301090A (en) | 2016-10-21 | 2016-10-21 | A kind of weak electricity measuring system and method controlling equipment based on intelligent soft starter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610919384.6A CN106301090A (en) | 2016-10-21 | 2016-10-21 | A kind of weak electricity measuring system and method controlling equipment based on intelligent soft starter |
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| CN106301090A true CN106301090A (en) | 2017-01-04 |
Family
ID=57720188
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| CN201610919384.6A Pending CN106301090A (en) | 2016-10-21 | 2016-10-21 | A kind of weak electricity measuring system and method controlling equipment based on intelligent soft starter |
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| CN107248745A (en) * | 2017-07-07 | 2017-10-13 | 中国矿业大学 | A kind of voltage detecting control system based on embedded technology |
| CN107462778A (en) * | 2017-09-05 | 2017-12-12 | 辰昊电力设备（深圳）有限公司 | Powered phase discriminator |
| CN111383780A (en) * | 2018-12-27 | 2020-07-07 | 核工业西南物理研究院 | Synchronous digital trigger system for multiple sets of thyristor pulse power supplies |
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| CN111383780A (en) * | 2018-12-27 | 2020-07-07 | 核工业西南物理研究院 | Synchronous digital trigger system for multiple sets of thyristor pulse power supplies |
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Application publication date: 20170104 |