CN205490255U - Energy -saving motor a soft start control system - Google Patents
Energy -saving motor a soft start control system Download PDFInfo
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- CN205490255U CN205490255U CN201620246255.0U CN201620246255U CN205490255U CN 205490255 U CN205490255 U CN 205490255U CN 201620246255 U CN201620246255 U CN 201620246255U CN 205490255 U CN205490255 U CN 205490255U
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Abstract
The utility model discloses an energy -saving motor a soft start control system, including control circuit, voltage measurement circuit, voltage transducer, current measurement circuit, current transmitter, human -machine interface module, trigger impulse forming circuit and pulse amplifying circuit, the voltage measurement circuit is used for measuring the phase voltage of A, B and C looks on the major loop, entry control is sent the circuit through voltage transducer to the phase voltage of voltage measurement circuit output, the current measurement circuit is used for measuring the phase electric current of A, B and C looks on the major loop, the phase electric current of current measurement circuit output send entry control the circuit through current transmitter, human -machine interface module links to each other with control circuit. This energy -saving motor a soft start control system adopts thyristor pressure regulating circuit to realize the soft start, and is energy -conserving respond well.
Description
Technical field
This utility model relates to a kind of energy-saving motor soft-start control system.
Background technology
nullAC asynchronous motor is one of most important driven equipment in industrial and agricultural production,It is the mainstay equipment of the development of the national economy，Because of its low cost、Simple in construction、Maintenance workload is little、The advantages such as high reliability and be widely applied,But the energy consumption of motor is also production and processing class enterprise topmost energy consumption source simultaneously，And asynchronous motor electric current when directly initiating and mechanical shock are excessive，The service life of himself and driven equipment all can be produced impact，Bigger pressure drop of grid also can affect electrical network and power and the operation of other equipment，In addition，Motor energy resource consumption in running also directly affects the economic benefit of enterprise，Showing by the survey data of motor at present according to China，More than 7.5KW there are about 100,000,000 with asynchronous motor，Wherein most motor is operated in underloading and heavy duty change，Power factor is low，Loss is big，It is badly in need of solving energy-saving and cost-reducing problem.If whole nation popularization and application electrical machine energy-saving device at present, in industrial quarters, there is great energy conservation and consumption reduction effects.And from the point of view of the market space of energy saver product, prospect is boundless.Energy-saving of motor system engineering is one of ten big emphasis energy conservation projects of National Development and Reform Committee's startup, economic security of the country to be guaranteed and sustainable development, resources consciousness, economy consciousness must be strengthened, improve and optimize the startup of motor and operation control system is of great practical significance and economic benefit, it is therefore necessary to a kind of energy-saving motor soft-start control system of design.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of energy-saving motor soft-start control system, and this energy-saving motor soft-start control system uses thyristor voltage regulation circuit realiration soft start, and energy-saving effect is good.
The technical solution of utility model is as follows:
A kind of energy-saving motor soft-start control system, described motor is threephase asynchronous, the major loop of threephase asynchronous uses the thyristor voltage regulation circuit being made up of six IGCTs, six IGCTs are divided into three A, B to being serially connected in motor respectively to power in branch road with C phase, every a pair IGCT reverse parallel connection；
Including control circuit, tension measuring circuit, voltage transmitter, current measurement circuit, current transducer, human-machine interface module, triggering pulse shaping circuit and pulse amplifying circuit；
Tension measuring circuit is for measuring the phase voltage of A, B and C phase on major loop；The phase voltage of tension measuring circuit output sends into control circuit through voltage transmitter；
Current measurement circuit is for measuring the phase current of A, B and C phase on major loop；The phase current of current measurement circuit output sends into control circuit through current transducer；
Human-machine interface module is connected with control circuit；
The control signal outfan of control circuit is connected with pulse amplifying circuit by triggering pulse shaping circuit；Pulse amplifying circuit exports six road start pulse signals respectively to six described IGCTs.
Described human-machine interface module uses TD400C type to touch display screen.
Described control circuit uses PLC, and PLC is also associated with the coil of start button, stop button, display lamp and catalyst；Catalyst has 3 switches, and 3 switches are in parallel with 3 pairs of IGCTs in thyristor voltage regulation circuit respectively.
Pressure measuring circuit, voltage transmitter, current measurement circuit, current transducer, triggering pulse shaping circuit and pulse amplifying circuit are the circuit module of maturation.
Control circuit can be single-chip microcomputer, DSP(Programmable Logic Controller) or the integration module such as DSP; can also be (such as NAND gate by digital device; adder etc.) digital circuit blocks that builds; control circuit is existing ripe hardware module; this programme is not related to any software and program, belongs to the protection object of utility model.
Beneficial effect:
Energy-saving motor soft-start control system of the present utility model, uses the soft start of thyristor voltage regulation circuit realiration motor, it is easy to implementing, energy-saving effect is obvious, use and touch display screen, compact conformation, integrated level is high, use PLC, strong anti-interference performance, there is high stability.Using the signal that current transducer and voltage transmitter transmission gather, signal is not readily susceptible to interference, the beneficially stable operation of motor；Motor is switched to total head after startup completes and runs by catalyst.In sum, energy-saving motor soft-start control system of the present utility model can ensure motor steadily and energy conservation starting, little to electromechanical shock, is conducive to ensureing that motor runs steadily in the long term.
Accompanying drawing explanation
Fig. 1 is the population structure block diagram of energy-saving motor soft-start control system；
Fig. 2 is the I/O wiring diagram of PLC.
Detailed description of the invention
Below with reference to the drawings and specific embodiments, this utility model is described in further details:
Embodiment 1: such as Fig. 1-2, the motor that this programme relates to is threephase asynchronous, the major loop of threephase asynchronous uses the thyristor voltage regulation circuit being made up of six IGCTs, six IGCTs are divided into three A, B to being serially connected in motor respectively to power in branch road with C phase, every a pair IGCT reverse parallel connection；
Energy-saving motor soft-start control system includes control circuit, tension measuring circuit, voltage transmitter, current measurement circuit, current transducer, human-machine interface module, triggering pulse shaping circuit and pulse amplifying circuit；
Tension measuring circuit is for measuring the phase voltage of A, B and C phase on major loop；The phase voltage of tension measuring circuit output sends into control circuit through voltage transmitter；
Current measurement circuit is for measuring the phase current of A, B and C phase on major loop；The phase current of current measurement circuit output sends into control circuit through current transducer；
Human-machine interface module is connected with control circuit；
The control signal outfan of control circuit is connected with pulse amplifying circuit by triggering pulse shaping circuit；Pulse amplifying circuit exports six road start pulse signals respectively to six described IGCTs.
Described human-machine interface module uses TD400C type to touch display screen.
Described control circuit uses PLC, and PLC is also associated with the coil of start button, stop button, display lamp and catalyst；Catalyst has 3 switches, and 3 switches are in parallel with 3 pairs of IGCTs in thyristor voltage regulation circuit respectively.
Application example and effect thereof:
PLC is S7-200CPU224XP+EM231, touch display screen also known as text display, use TD400C (replacing traditional button and display floater), motor is 4 pole motors of the Y100L1-40 series of a 2.2kW, the load of pilot system is DC generator load, tests system, along with the reduction of load factor, the operational efficiency of motor is gradually improved, and power factor increase is the most notable.Test result indicate that, when motor load rate is more than 0.5, blood pressure lowering energy-saving effect is inconspicuous；When between 0.3～0.5, the efficiency change of motor is little, but power factor significantly improves, and has certain energy-saving effect；Load factor be less than 0.3 constantly blood pressure lowering energy-saving effect notable, efficiency and the power factor of motor all improve a lot.This energy-saving run scheme can make asynchronous motor all present higher efficiency under different loads, and takes into account raising power factor.
Claims (3)
1. an energy-saving motor soft-start control system, described motor is threephase asynchronous, the major loop of threephase asynchronous uses the thyristor voltage regulation circuit being made up of six IGCTs, six IGCTs are divided into three A, B to being serially connected in motor respectively to power in branch road with C phase, every a pair IGCT reverse parallel connection；
It is characterized in that, including control circuit, tension measuring circuit, voltage transmitter, current measurement circuit, current transducer, human-machine interface module, triggering pulse shaping circuit and pulse amplifying circuit；
Tension measuring circuit is for measuring the phase voltage of A, B and C phase on major loop；The phase voltage of tension measuring circuit output sends into control circuit through voltage transmitter；
Current measurement circuit is for measuring the phase current of A, B and C phase on major loop；The phase current of current measurement circuit output sends into control circuit through current transducer；
Human-machine interface module is connected with control circuit；
The control signal outfan of control circuit is connected with pulse amplifying circuit by triggering pulse shaping circuit；Pulse amplifying circuit exports six road start pulse signals respectively to six described IGCTs.
Energy-saving motor soft-start control system the most according to claim 1, it is characterised in that described human-machine interface module uses TD400C type to touch display screen.
Energy-saving motor soft-start control system the most according to claim 1 and 2, it is characterised in that described control circuit uses PLC, and PLC is also associated with the coil of start button, stop button, display lamp and catalyst；Catalyst has 3 switches, and 3 switches are in parallel with 3 pairs of IGCTs in thyristor voltage regulation circuit respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620246255.0U CN205490255U (en) | 2016-03-29 | 2016-03-29 | Energy -saving motor a soft start control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620246255.0U CN205490255U (en) | 2016-03-29 | 2016-03-29 | Energy -saving motor a soft start control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205490255U true CN205490255U (en) | 2016-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620246255.0U Expired - Fee Related CN205490255U (en) | 2016-03-29 | 2016-03-29 | Energy -saving motor a soft start control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205490255U (en) |
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2016
- 2016-03-29 CN CN201620246255.0U patent/CN205490255U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 Termination date: 20170329 |
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| CF01 | Termination of patent right due to non-payment of annual fee |