CN2485865Y - Self-adapt energy-saving controller for electric motor - Google Patents
Self-adapt energy-saving controller for electric motor Download PDFInfo
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- CN2485865Y CN2485865Y CN01213124U CN01213124U CN2485865Y CN 2485865 Y CN2485865 Y CN 2485865Y CN 01213124 U CN01213124 U CN 01213124U CN 01213124 U CN01213124 U CN 01213124U CN 2485865 Y CN2485865 Y CN 2485865Y
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Abstract
The utility model discloses a self-adapting energy saving control device for electric motor. Signal input end of a singlechip is connected with forward path that collects motor information of the controlled objects; a control output end is connected a backward path that transmits control information; the forward path consists of a mutual inductor that is arranged on a three-way power cord of the motor, and output end of the mutual inductor is connected with the singlechip through a switch of signal transmission, an analogue switch and A/D. The utility model can realize electrical buffer start, auto tracking of load, power-less on-site compensation and has the function of motor dynamic protection.
Description
The utility model relates to a kind of motor adaptive power conservation control device.
At present, motor drags different loads operation in industrial production, and its load factor major part is below 60%, have in addition less than 30%, thereby make loss meritorious, reactive power bigger, cause the waste of the energy.Present the cyclic variation feature in some load, the duty ratio that load increases the weight of with load reduction respectively is 50% o'clock, just mean and have 50% relative light running space-time at least, at this moment, reactive loss will aggravate, power factor will be away from the regulation requirement, and the motor start-up electric current is generally 4～7 times of rated operational current, and the installed capacity of transformer is promptly considered according to this.Though in actual the use startup measures such as Y/ △ conversion and compensator step-down are arranged, but still can't resolve starting current surge impact electrical network phenomenon.
The purpose of this utility model is to avoid above-mentioned weak point of the prior art, and a kind of electronic buffer starting is provided, from motion tracking load, reactive power compensation on the spot and motor adaptive power conservation control device with motor dynamic protection function.
Design of the present utility model is as follows:
A kind of motor adaptive power conservation control device comprises single-chip microcomputer 8, and its signal input part connects the forward path 18 of gathering controlled device motor 16 information; Its control output end connects the backward channel 17 of communicating control information; Described single-chip microcomputer 8 links with keyboard 14 by I/O expansion 7; Described single-chip microcomputer 8 outputs are connected to display unit, its special character is: described forward path 18 comprises the instrument transformer 12 that is arranged on the motor 16 major loop three-phase power lines, the output of this instrument transformer 12 connects the input of single-chip microcomputer 8 successively through signal transmitting 11, analog switch 10 and A/D conversion 9, described backward channel 17 comprises the D/A conversion 4 that is connected to single-chip microcomputer 8 control output ends, the output of this D/A conversion 4 is through simulation control 5 access power modules 6, and the reactive power compensation 3 in the described backward channel 17 is connected in the major loop of motor 16; The I/O mouth of described single-chip microcomputer 8 is connected to time-of-day clock 15; Described I/O expansion 7, D/A conversion 4, power model 6, A/D conversion 9, analog switch 10 and time-of-day clock 15 mainly are made of I/O expansion U2, D/A conversion U5, power model JML, A/D conversion U3, analog switch U4 and time-of-day clock U1 respectively, described single-chip microcomputer 8 is a single-chip microprocessor MCU, described motor 16 adopts motor M D, and described keyboard adopts keyboard KY; Described instrument transformer 12 comprises resistance R V1, RV2, the RV3 that is arranged at current transformer HA, HB, the HC on the motor M D major loop three-phase power line and is connected to its two ends respectively, described instrument transformer 12 also comprises the voltage transformer HV that is connected to motor M D two ends, and it inserts signal transmitting 11 through voltage transmitter B; Described display unit comprises display 2, and it comprises the digital display LEDD that is connected to the single-chip microprocessor MCU output; Described reactive power compensation 3 comprises the relay J C1 that is connected to main frame MD two ends and is connected to capacitor C P1, CP2, CP3 on the motor M D major loop respectively; Normally opened contact JC1-3, the JC1-4 of described relay J C1, JC1-5 are connected to respectively between the major loop of capacitor C P1, CP2, CP3 and motor M D.
Above-mentioned simulation control 5 can comprise the amplifier A6 that is connected to D/A conversion U5 output, and the output of this amplifier A6 connects the reverse input end of amplifier A7 through resistance R 1, and the output of described amplifier A7 is through isolating diode DL4 access power module J ML.
Above-mentioned signal transmitting 11 can comprise four paths that are connected to current transformer HA, HB, HC and voltage transformer HV output respectively, and each paths comprises an amplifier respectively, is connected to current rectifying and wave filtering circuit at the positive input of this amplifier.
Can comprise detection of electrical leakage 13 with passage 15 before above-mentioned, this detection of electrical leakage 13 can comprise amplifier A5 and relay J 1, described relay J 1 is connected to the I/O mouth of single-chip microprocessor MCU through optocoupler driver TD, the reverse input end of described amplifier A5 is connected to diode DL1, DL2, the normally-closed contact JC1-1 of DL3, relay J C1, the normally opened contact J1-1 of relay J 1 that is in series, and the positive input of described amplifier A5 is connected to divider resistance R2, R3.
Above-mentioned display unit can comprise alarm 1, and this alarm 1 can comprise LED 3～LED6, is divided into and Tong state the I/O expansion U2 that triode T3～T6 connects single-chip microprocessor MCU.
The accompanying drawing drawing is described as follows:
Fig. 1 is a theory diagram of the present utility model;
Fig. 2 is the circuit theory diagrams of the utility model one embodiment.
The utility model is described in further detail below in conjunction with accompanying drawing:
Referring to Fig. 1, the utility model is a closed-loop control device.Can make the The whole control device in strict accordance with setting with having related parameter, instruction to insert in advance in the single-chip microcomputer 8 by keyboard 14, correctly move.Display 2 transmits relevant parameter, instruction by single-chip microcomputer 8 serial ports, and demonstrates intuitively, can observe, revise for the operator.Keyboard 14 links with single-chip microcomputer 8 by I/O expansion 7.Alarm 1 is used to point out nature of trouble and running status, and it also links to each other with single-chip microcomputer 8 by I/O expansion 7.Time-of-day clock is to adopt programmable chip, communicates by letter by communication control procedure with single-chip microcomputer 8, and its time information is read by single-chip microcomputer 8 or refreshes altogether, with power controlling module 6, motor 16 is started or stoped.Forward path 18 is that single-chip microcomputer 8 is gathered the unique passage that obtains controlled device information, and whether its instrument transformer 12 waits information to deliver to single-chip microcomputer 8 by signal transmitting 11, analog switch 10 and A/D conversion 9 successively with fault the load weight size of motor 16.Detection of electrical leakage 13 in the forward path 18 is that the detection of electrical leakage signal of motor 16 is delivered to single-chip microcomputer 8 through analog switch 10, A/D conversion 9.Backward channel 17 is the unique passages that controlled quentity controlled variable sent successively to controlled device, and one bar branch road is that the size of 8 pairs of motor 16 power outputs of single-chip microcomputer is controlled, and promptly retrains the power output of motors 16 by D/A conversion 4, simulation control 5 and power model 6; Another branch road is to carry out reactive power compensation by reactive power compensation 3.
Referring to Fig. 2, single-chip microcomputer 8 is that single-chip microprocessor MCU can adopt 89C52 in the present embodiment, and keyboard 14 can adopt the keypad KY of 12 keys, has related parameter, instruction to insert in advance in the single-chip microprocessor MCU by keyboard KY, and by display 2, promptly display led D can intuitively show.The 0# key of keyboard KY to 9# key is multiplexing key; have the effect of numeral, function key concurrently; the two switches by " gear shift " key, and promptly the 0# of keyboard KY～9# key also has functions such as " deletion ", " startup ", " startup initial value ", " start is preset ", " shutdown is preset " concurrently.Keyboard KY links to each other with single-chip microprocessor MCU by the I/O expansion U2 that constitutes I/O expansion 7.Alarm 1 adopts six light-emitting diode levels of LED1～LED6 to become, and it is respectively through triode T1～T6, link to each other with single-chip microprocessor MCU through I/O expansion U2 again.Display led D transmits data by the single-chip microprocessor MCU serial port.The main programmable chip U1 that adopt of time-of-day clock 15 constitute, and programmable clock chip U1 can select 8583 for use, and it is communicated by letter by communication control procedure with single-chip microprocessor MCU, can produce year, month, day, week in time, minute, second equal time information, read by single-chip microcomputer after the programming and refresh.Single-chip microprocessor MCU is constantly read the clock chip U1 content of special use, and sets duration relatively: generate " startup " or " stopping " when equating and order, and in order to power controlling module 6, i.e. power model JML, making motor 16 is that motor M D starts or stops.A/D conversion 9 in the forward path 18, analog switch 11 is respectively by A/D conversion U3, analog switch U4 constitutes, the current transformer HA that forms instrument transformer 12 is housed on the three-phase power line of motor M D, HB, HC, its secondary current is respectively through resistance R V1, RV2, RV3 is converted to voltage, one group of rectifying device QZL rectification and electric cloudy RL1 through signal transmitting 11, after electricity CL1～2 filtering, deliver to amplifier A1 by variable resistor RW1, in addition two groups then respectively through rectification, deliver to amplifier A2 after the filtering respectively, A3, signal after the adjusting is the analog quantity of signal transmitting 11 outputs, this amount is the load simulation amount, and whether are the weight size that shows load and fault.Equally, the terminal voltage of another road motor M D is to obtain secondary singal through voltage transformer HV, the terminal voltage analog quantity of the amplifier A4 output motor MD in signal transmitting 11.The detection of electrical leakage 13 of motor M D comprises two normally-closed contact JC1-1, the JC1-2 of relay J C1 and the normally opened contact J1-1 of relay J 1, and measures the loop by constituting with being connected in series of three isolating diode DL1～3, delivers to analog switch U4 after amplifier A5 amplifies.The various analog quantitys that A/D conversion U3 gathers become digital quantity behind analog switch U4 gating, the data bus dbus of delivering to single-chip microprocessor MCU reads analysis for single-chip microcomputer.The D/A conversion 4 of forming the back passage is made of D/A conversion U5; Simulation control 5 mainly is made of operational amplifier A 6, A7.To the control of power model JML, promptly be control to motor M D, the size of motor M D power output is retrained by power model JML.Single-chip microprocessor MCU is served bus DBUS with controlled quentity controlled variable, and gating D/A conversion U5, and the analog quantity of output is delivered to power model JML after amplifying adjustment, amplifier A7 reversal by amplifier A6, and controlling its amount of opening is the size of conduction angle.The height variation of motor M D terminal voltage is directly proportional with the amount of opening of power model JML, and in time closes power model JML when breaking down, and motor M D is stopped.Reactive power compensation 3 be when motor M D finish soft start running stable after, normally opened contact JC1-3, the JC1-4 of relay J C1, JC1-5 closure, put into operation in capacitor C P1～3 and carry out reactive power compensation, disconnect relay J C1-3, JC1-4, JC1-5 when breaking down, cut off capacitor C P1～3.
The utility model compared with prior art has following advantage:
1, motor adopts the even soft start that accelerates, and has avoided direct startup to bring the harm of heavy current impact;
2, follow the tracks of load fully, the timely adjustment power output makes power of motor and load reach optimum Match Adaptive process;
3, improve power factor, made a price reduction meritorious and idle infringement, also improved the unit power quality simultaneously;
4, motor has been carried out the Comprehensive protection, motor is moved under the condition of being perfectly safe;
5, adopt flexibly accurate clock control effect, the start-stop time can choose at random, arrange.
Claims (5)
1, a kind of motor adaptive power conservation control device comprises single-chip microcomputer (8), and its signal input part connects the forward path (18) of gathering controlled device motor (16) information; Its control output end connects the backward channel (17) of communicating control information; Described single-chip microcomputer (8) links by I/O expansion (7) and keyboard (14); Described single-chip microcomputer (8) output is connected to display unit, it is characterized in that: described forward path (18) comprises the instrument transformer (12) that is arranged on motor (16) the major loop three-phase power line, the output of this instrument transformer (12) is successively through signal transmitting (11), analog switch (10) and A/D conversion (9) connect the input of single-chip microcomputer (8), described back passage (17) comprises the D/A conversion (4) that is connected to single-chip microcomputer (8) control output end, the output of this D/A conversion (4) is through simulation control (5) access power module (6), and the reactive power compensation (3) in the described backward channel (17) is connected in the major loop of motor (16); The I/O mouth of described single-chip microcomputer (8) is connected to time-of-day clock (15); Described I/O expansion (7), D/A conversion (4), power model (6), A/D conversion (9), analog switch (10) and time-of-day clock (15) are respectively mainly by I/O expansion U2, D/A conversion U5, power
Module J ML, A/D conversion U3, analog switch U4 and time-of-day clock U1 constitute, and described single-chip microcomputer (8) is a single-chip microprocessor MCU, and described motor (16) adopts motor M D, and described keyboard adopts keyboard KY; Described instrument transformer (12) comprises resistance R V1, RV2, the RV3 that is arranged at current transformer HA, HB, the HC on the motor M D major loop three-phase power line and is connected to its two ends respectively, described instrument transformer (12) also comprises the voltage transformer HV that is connected to motor M D two ends, and it inserts signal transmitting (11) through voltage transmitter B; Described display unit comprises display (2), and it comprises the digital display LEDD that is connected to the single-chip microprocessor MCU output; Described reactive power compensation (3) comprises the relay J C1 that is connected to main frame MD two ends and is connected to capacitor C P1, CP2, CP3 on the motor M D major loop respectively; Normally opened contact JC1-3, the JC1-4 of described relay J C1, JC1-5 are connected to respectively between the major loop of capacitor C P1, CP2, CP3 and motor M D.
2, motor adaptive power conservation control device as claimed in claim 1, it is characterized in that: described simulation control (5) comprises the amplifier A6 that is connected to D/A conversion U5 output, the output of this amplifier A6 connects the reverse input end of amplifier A7 through resistance R 1, and the output of described amplifier A7 is through isolating diode DL4 access power module J ML.
3, motor adaptive power conservation control device as claimed in claim 1 or 2, it is characterized in that: described signal transmitting (11) comprises four paths that are connected to current transformer HA, HB, HC and voltage transformer HV output respectively, each paths comprises an amplifier respectively, is connected to current rectifying and wave filtering circuit at the positive input of this amplifier.
4, motor adaptive power conservation control device as claimed in claim 3, it is characterized in that: described before and passage (18) comprise detection of electrical leakage (13), this detection of electrical leakage (13) comprises amplifier A5 and relay J 1, described relay J 1 is connected to the I/O mouth of single-chip microprocessor MCU through optocoupler driver TD, the reverse input end of described amplifier A5 is connected to diode DL1, DL2, the normally-closed contact JC1-1 of DL3, relay J C1, the normally opened contact J1-1 of relay J 1 that is in series, and the positive input of described amplifier A5 is connected to divider resistance R2, R3.
5, motor adaptive power conservation control device as claimed in claim 4, it is characterized in that: described display unit comprises alarm (1), this alarm (1) comprises LED 3～LED6, is divided into and Tong state the I/O expansion U2 that triode T3～T6 connects single-chip microprocessor MCU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN01213124U CN2485865Y (en) | 2001-03-23 | 2001-03-23 | Self-adapt energy-saving controller for electric motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN01213124U CN2485865Y (en) | 2001-03-23 | 2001-03-23 | Self-adapt energy-saving controller for electric motor |
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| Publication Number | Publication Date |
|---|---|
| CN2485865Y true CN2485865Y (en) | 2002-04-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN01213124U Expired - Fee Related CN2485865Y (en) | 2001-03-23 | 2001-03-23 | Self-adapt energy-saving controller for electric motor |
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| Country | Link |
|---|---|
| CN (1) | CN2485865Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101860316A (en) * | 2010-05-26 | 2010-10-13 | 天津市华萌科技有限公司 | Self-adaptive load following control technical system |
| CN101702603B (en) * | 2009-12-01 | 2012-04-04 | 山东大学 | DC motor soft starter supplied with power by storage battery |
| CN102454589A (en) * | 2012-01-09 | 2012-05-16 | 天津科技大学 | Frequency conversion cooling tower fan running state monitoring and fault diagnosis remote monitor system |
-
2001
- 2001-03-23 CN CN01213124U patent/CN2485865Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101702603B (en) * | 2009-12-01 | 2012-04-04 | 山东大学 | DC motor soft starter supplied with power by storage battery |
| CN101860316A (en) * | 2010-05-26 | 2010-10-13 | 天津市华萌科技有限公司 | Self-adaptive load following control technical system |
| CN102454589A (en) * | 2012-01-09 | 2012-05-16 | 天津科技大学 | Frequency conversion cooling tower fan running state monitoring and fault diagnosis remote monitor system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |