CN201758289U - Dynamic reactive local compensation and frequency control integration energy-saving device of an asynchronous motor - Google Patents
Dynamic reactive local compensation and frequency control integration energy-saving device of an asynchronous motor Download PDFInfo
- Publication number
- CN201758289U CN201758289U CN2010201747404U CN201020174740U CN201758289U CN 201758289 U CN201758289 U CN 201758289U CN 2010201747404 U CN2010201747404 U CN 2010201747404U CN 201020174740 U CN201020174740 U CN 201020174740U CN 201758289 U CN201758289 U CN 201758289U
- Authority
- CN
- China
- Prior art keywords
- frequency control
- module
- dynamic reactive
- asynchronous motor
- local compensation
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
Landscapes
- Control Of Electrical Variables (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The utility model discloses a dynamic reactive local compensation and frequency control integration energy-saving device of an asynchronous motor. A dynamic reactive local compensation module (1) is connected with the front end of a frequency control module 92) in series, an output end of the frequency control module is connected with the asynchronous motor (6), a control line of the dynamic reactive local compensation module (1) accesses a port of a single-chip micro-computer (16) in a main control board (3), a control signal line of the frequency control module (2) is connected with an output port of an analog voltage module (15) in the main control board (3); the dynamic reactive local compensation module is connected with the frequency control module in series and the power factor is detected at the real time using the single-chip micro-computer and quick real-time reactive compensation is realized; no impact is present in the switching process and the life of a switching capacitor and a switching switch is prolonged, thus the asynchronous motor more stably operates and the energy saving effect is increased;; the frequency control module realizes the frequency control by the connection of the hardware thus the development period of the frequency control module is shortened.
Description
Technical field
The utility model relates to the asynchronous motor field of energy-saving technology, particularly asynchronous motor dynamic reactive local compensation and frequency control integrated energy-saving device.
Background technology
There is a large amount of reactive powers in large-scale application along with a large amount of inductive loads such as asynchronous motor etc. in electrical network, the utilization ratio of electrical network is reduced, and has increased the burden of electrical network, influences the quality of electrical network.For quality and the efficient that guarantees electrical network, department of State Grid requires the line power factor with electric unit must reach on certain numerical value, therefore with electric unit concentrated reactive power compensator is arranged all in major part, but this can not fundamentally solve the problem of electricity consumption internal institution power consumption efficiency.At this situation, can use reactive power compensation on the spot to come to compensate from the root that reactive power produces.The capacitor that most of at present reactive power compensation on the spot method that adopts is the fixed capacity in parallel at the power device place is realized compensation, though this device is simple, can not carry out real-Time Compensation according to the actual operating state of power device.
Advantages such as asynchronous motor is low, easy to maintenance owing to its cost, and is cheap are widely used in industrial or agricultural, daily life, and its load accounts for 60%～70% of total electricity consumption, becomes the electric equipment of power consumption maximum.In the middle of the production process of reality, as blower fan, load of the pumps such as water pump, because the actual needs of producing, need be to the adjusting of air quantity, flow, in real work, most of situation is that motor keeps rated speed, realize by controlling opening of valve, can cause waste of power resources like this.Theoretically, not changing valve opening, realize air quantity, Flow-rate adjustment by the rotating speed of variable frequency adjustment motor, is the mode of economical and energy saving the most.Therefore, frequency control exists considerable economic and wide application prospect.
Summary of the invention
The purpose of this utility model is to provide a kind of energy saver that collects dynamic reactive local compensation and frequency control one for asynchronous motor, make the asynchronous motor running speed adjustable continuously, realize the dynamic reactive local compensation of asynchronous motor simultaneously, reach energy-saving effect.
For achieving the above object, the utility model adopts following technical scheme: a kind of asynchronous motor dynamic reactive local compensation and frequency control integrated energy-saving device, by dynamic reactive local compensation module 1, frequency control module 2, master board 3 and asynchronous motor 6 constitute, it is characterized in that: frequency control module 2 front ends series connection dynamic reactive local compensation module 1, frequency control module output termination asynchronous motor 6, the control line of dynamic reactive local compensation module 1 inserts single-chip microcomputer 16 ports in the master board 3, and the control signal wire of frequency control module 2 is connected to aanalogvoltage module 15 output ports in the master board 3.
Described dynamic reactive local compensation module is by switch 10, fuse 11, building-out capacitor 12, thyristor 13, diode 14, voltage zero-cross detection chip 17, voltage current transformer 9 are formed, current-voltage transformer 9 inserts supply line, signal lines is connected to single-chip microcomputer 16 sample port in the master board 3, thyristor 13 and diode 14 reverse parallel connections, thyristor 13 control signal wires are connected to voltage zero-cross detection chip 17 output pins, and single-chip microcomputer 16 switching control signal wires are connected to voltage zero-cross detection chip 17 input pins.
Described frequency control module 2 is made up of rectifier 8, Intelligent Power Module 7, variable frequency control chip 4 and driving optocoupler 5, and the voltage/frequency control signal wire of variable frequency control chip 4 is connected to the output port of aanalogvoltage module 15 in the master board.
Preferentially, described single-chip microcomputer 16 is ATmega128.
Preferentially, described voltage zero-cross detection chip 17 is MOC3083.
Preferentially, described variable frequency control chip 4 is MC3PHAC.
The utlity model has following beneficial effect: the utility model is in the same place with frequency control module series combination by dynamic reactive local compensation module, adopts single-chip microcomputer to carry out realtime power factor and detects, and has realized quick real-time reactive power compensation; Realization switching process does not have impact, has prolonged the life-span of switched capacitor and fling-cut switch, makes the asynchronous motor operation more steady, improves energy-saving effect; Adopted MC3PHAC and IPM, saved the software design of SPWM and the hardware designs of inversion module, made the construction cycle of frequency control shorten a lot.
Description of drawings: Fig. 1 is a principle schematic of the present utility model; Fig. 2 is that the circuit of the utility model embodiment is formed schematic diagram; Among the figure: 1. dynamic reactive local compensation module; 2. frequency control module; 3. master board; 4. variable frequency control chip; 5. driving optocoupler; 6. asynchronous motor; 7. Intelligent Power Module; 8. rectifier; 9. voltage current transformer; 10. switch; 11. fuse; 12. compensation condenser; 13. thyristor; 14. diode; 15. aanalogvoltage output module; 16. single-chip microcomputer; 17. voltage zero-cross detection chip.
Embodiment: the utility model is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 1 and Figure 2, asynchronous motor dynamic reactive local compensation and frequency control one energy saver are made up of dynamic reactive local compensation module 1, frequency control module 2 and master board 3 and asynchronous motor 6.Frequency control module 2 front ends series connection dynamic reactive local compensation module 1, frequency control module 2 outputs link to each other with asynchronous motor 6, the control line of dynamic reactive local compensation module 1 inserts single-chip microcomputer 16 ports in the master board 3, and the control signal wire of frequency control module 2 is connected to aanalogvoltage module 15 output ports in the master board 3.Wherein: dynamic reactive local compensation module 1 is by switch 10, fuse 11, building-out capacitor 12, and thyristor 13, diode 14, voltage zero-cross detection chip 17, voltage current transformer 9 are formed; The frequency control module is made up of rectifier 8, Intelligent Power Module 7, variable frequency control chip 4 and driving optocoupler 5; Master board 3 is made up of single-chip microcomputer 16, aanalogvoltage output module 15; Voltage current transformer 9 inserts supply line in the dynamic reactive local compensation module 1, voltage, current acquisition signal are inserted the sample port of the single-chip microcomputer 16 in the master board 3, the switching control signal wire of thyristor 13 is connected to voltage zero-cross detection chip 17 input pins, thyristor 13 and diode 14 reverse parallel connections are connected to voltage zero-cross detection chip 17 output pins.
The voltage/frequency control signal wire of variable frequency control chip 4 is connected to the output port of aanalogvoltage module 15 in the master board 3 in the frequency control module 2.
Single-chip microcomputer 16 is selected ATmega128 for use; Voltage zero-cross detection chip 17 is selected MOC3083 for use; Variable frequency control chip 4 is selected MC3PHAC for use.
By the series combination with dynamic reactive local compensation module and frequency control module, energy-saving effect is obvious, and dynamic reactive local compensation inside modules realizes operating passing zero, has reduced the switching impact, prolongs the useful life of thyristor and capacitor.The frequency control module has realized frequency control by the connection of hardware, and the frequency control Development of Module cycle is shortened.
Above content is to further describing that the utility model is done in conjunction with concrete preferred implementation; can not assert that execution mode of the present utility model only limits to this; for the utility model person of an ordinary skill in the technical field; all any simple modification and equivalent structure transformation or modifications of being done according to the utility model spirit all belong to the definite scope of patent protection of claims that the utility model is submitted to.
Claims (6)
1. asynchronous motor dynamic reactive local compensation and frequency control integrated energy-saving device, by dynamic reactive local compensation module (1), frequency control module (2), master board (3) and asynchronous motor (6) constitute, it is characterized in that: frequency control module (2) front end series connection dynamic reactive local compensation module (1), frequency control module (2) output termination asynchronous motor (6), the control line of dynamic reactive local compensation module (1) inserts single-chip microcomputer (16) port in the master board (3), and the control signal wire of frequency control module (2) is connected to aanalogvoltage module (15) output port in the master board (3).
2. asynchronous motor dynamic reactive local compensation according to claim 1 and frequency control integrated energy-saving device, it is characterized in that: described dynamic reactive local compensation module (1) is by switch (10), fuse (11), building-out capacitor (12), thyristor (13), diode (14), voltage zero-cross detection chip (17), voltage current transformer (9) is formed, current-voltage transformer (9) inserts supply line, signal lines is connected to single-chip microcomputer (16) sample port in the master board (3), thyristor (13) and diode (14) reverse parallel connection, thyristor (13) control signal wire is connected to voltage zero-cross detection chip (17) output pin, and single-chip microcomputer (16) switching control signal wire is connected to voltage zero-cross detection chip (17) input pin.
3. asynchronous motor dynamic reactive local compensation according to claim 1 and frequency control integrated energy-saving device, it is characterized in that: described frequency control module (2) is made up of rectifier (8), Intelligent Power Module (7), variable frequency control chip (4) and driving optocoupler (5), and the voltage/frequency control signal wire of variable frequency control chip (4) is connected to the output port of aanalogvoltage module (15) in the master board.
4. asynchronous motor dynamic reactive local compensation according to claim 1 and frequency control integrated energy-saving device is characterized in that: described single-chip microcomputer (16) is ATmega128.
5. asynchronous motor dynamic reactive local compensation according to claim 2 and frequency control integrated energy-saving device is characterized in that: described voltage zero-cross detection chip (17) is MOC3083.
6. asynchronous motor dynamic reactive local compensation according to claim 3 and frequency control integrated energy-saving device is characterized in that: described variable frequency control chip (4) is MC3PHAC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201747404U CN201758289U (en) | 2010-04-29 | 2010-04-29 | Dynamic reactive local compensation and frequency control integration energy-saving device of an asynchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201747404U CN201758289U (en) | 2010-04-29 | 2010-04-29 | Dynamic reactive local compensation and frequency control integration energy-saving device of an asynchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201758289U true CN201758289U (en) | 2011-03-09 |
Family
ID=43645578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201747404U Expired - Lifetime CN201758289U (en) | 2010-04-29 | 2010-04-29 | Dynamic reactive local compensation and frequency control integration energy-saving device of an asynchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201758289U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110098621A (en) * | 2019-04-12 | 2019-08-06 | 安徽中电电气有限公司 | A kind of reactive power automatic compensation device for motor local compensation |
-
2010
- 2010-04-29 CN CN2010201747404U patent/CN201758289U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110098621A (en) * | 2019-04-12 | 2019-08-06 | 安徽中电电气有限公司 | A kind of reactive power automatic compensation device for motor local compensation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105356576A (en) | Grid-connection type photovoltaic direct current microgrid system and operational control method therefor | |
| CN103547043B (en) | A kind of centralized direct-current micro-grid electric power system of LED and method for controlling power supply | |
| CN102148507A (en) | Photovoltaic grid-connected inverter MPPT (Maximum Power Point Tracking) system based on admittance optimization algorithm | |
| CN201758289U (en) | Dynamic reactive local compensation and frequency control integration energy-saving device of an asynchronous motor | |
| CN204948016U (en) | A kind of photovoltaic power generation apparatus adopting zero voltage switch auxiliary resonance | |
| CN201789203U (en) | Power distribution cabinet | |
| CN201577063U (en) | Special power saving device for fans and water pumps | |
| CN203399048U (en) | An optical electrical complementation AC frequency-variable generating and speed-regulating energy-saving device | |
| CN203883683U (en) | Frequency conversion device provided with PLC controller | |
| CN203632914U (en) | LED centralized direct-current micro-grid power supply system | |
| CN202707449U (en) | Pipeline constant-pressure conveying starting disk for liquid | |
| CN205753400U (en) | A kind of household DC micro-capacitance sensor mu balanced circuit | |
| CN105977957B (en) | A kind of household DC micro-capacitance sensor voltage regulator circuit and control method | |
| CN205986141U (en) | Power supply circuit of air conditioning unit | |
| CN201307844Y (en) | Electric saver of industrial sewing machine | |
| CN104092436A (en) | Photovoltaic curtain wall power supply system and method | |
| CN211321249U (en) | Closed-loop motor power saving device | |
| CN201750396U (en) | Intelligent three-phase motor power saver | |
| CN203368033U (en) | Household intelligent power saving device | |
| CN203219216U (en) | Solar energy system including energy optimizing devices | |
| CN201918739U (en) | Energy-storage-type electricity-saving control device of water pump | |
| CN103001571A (en) | Motor load tracking synchronous adjusting power saving device | |
| CN201001228Y (en) | Single phase illumination digital power economizer | |
| CN102006004A (en) | Single phase fan frequency-conversion power-saving device | |
| CN201766550U (en) | Three-phase air compressor frequency conversion energy economizer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110309 |