CN101694984A - Asynchronous motor energy saver - Google Patents
Asynchronous motor energy saver Download PDFInfo
- Publication number
- CN101694984A CN101694984A CN200910272427A CN200910272427A CN101694984A CN 101694984 A CN101694984 A CN 101694984A CN 200910272427 A CN200910272427 A CN 200910272427A CN 200910272427 A CN200910272427 A CN 200910272427A CN 101694984 A CN101694984 A CN 101694984A
- Authority
- CN
- China
- Prior art keywords
- circuit
- voltage
- signal
- links
- asynchronous motor
- 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.)
- Pending
Links
Images
Landscapes
- Control Of Ac Motors In General (AREA)
Abstract
The invention relates to the field of alternating current motors, in particular to an asynchronous motor energy saver, which comprises a power supply circuit, a voltage synchronizing signal detection circuit, a DSP main controller, a trigger circuit, a main circuit control module, a protection circuit, a terminal voltage detection circuit, a power factor angle detection circuit and an input and output circuit, wherein the input end of the main circuit control module is connected with three-phase electric network voltage, and the output end is connected with the asynchronous motor, the control end receives real time trigger angle impulse control signals from the trigger circuit, the main circuit controls a switch device in a module to be triggered and conducted, and assures the output voltage of the switch device in real time according to real time trigger angle impulse control signals, and the output voltage is loaded on the port of the asynchronous motor. The asynchronous motor energy saver can be widely applied for industrially producing all-digital energy-saving controllers of a three-phase asynchronous motor in each field, has the function of soft start, overload and short-circuit protection, and can automatically measure and display parameters including motor voltage, electric current, power, power factor angle and the like.
Description
Technical field
The invention belongs to the AC asynchronous motor technical field, be specifically related to a kind of asynchronous motor energy saver based on the DSP fuzzy control.
Background technology
AC asynchronous motor, because it is simple in structure, easily manufactured, cheap, sturdy and durable, reliable, seldom need to safeguard and can be used for advantage such as adverse circumstances, obtained using widely in industry, agricultural and daily life, it all is as power with AC asynchronous motor that current most industry drags.These asynchronous motors generally all are to select according to the load of design, but in actual use, mostly often are in underloading even move under zero load.Therefore, the phenomenon of " low load with strong power " almost is very common, and the load factor of motor is low, and efficient is not high, and the waste of electric energy phenomenon is very serious.
At present, the asynchronous motor electricity-saving appliance that uses on the market adopts Y/ △ start-up technique mostly, and owing to it can not change with motor load, thereby electric energy is not high.And the Electric Motor Soft-starter of employing thyristor voltage regulation technology mainly be to regulate, but its control method is single, is difficult to the various parameters of motor are adjusted and controlled.
Summary of the invention
The objective of the invention is to overcome above-mentioned weak point, a kind of asynchronous motor energy saver is provided, this asynchronous motor energy saver has effectively solved traditional mathematical analysis method to motor and the indifferent problem of adaptive load, can be applicable to asynchronous motor running status under the various different operating modes, obtain energy-conservation comparatively efficiently (effect) effect.
Asynchronous motor energy saver provided by the invention is characterized in that: it comprises power circuit, voltage synchronization signal detection circuit, DSP main controller, circuits for triggering, main circuit control module, protective circuit, terminal voltage testing circuit, power factor angle detection circuit and imput output circuit;
Power circuit provides power supply for each parts of energy-saving appliance;
The voltage synchronization signal detection circuit links to each other with three phase network voltage, is used to detect three phase network voltage synchronizing signal, and this three-phase voltage synchronizing signal is sent into the DSP main controller;
Protective circuit links to each other with the input of asynchronous motor, is used to detect voltage, the current signal of asynchronous motor, and its waveform is changed, and the digital signal after will changing is again sent into the DSP main controller; Protective circuit disconnects main circuit when receiving the control signal of DSP main controller feedback;
The terminal voltage testing circuit links to each other with the stator terminal voltage of asynchronous motor, is used to detect the terminal voltage signal of asynchronous motor stator, and this signal is carried out waveform transformation, converts digital signal to, sends into the DSP main controller again;
One end of power-factor angle detection module links to each other with the input of asynchronous motor, is used to detect the power factor angle signal of asynchronous motor, and this signal is carried out waveform transformation, converts digital signal to, sends into the DSP main controller again;
The DSP main controller is used to judge whether voltage, electric current surpass preset threshold, and when the electric current and voltage value surpassed threshold value, the DSP main controller transmitted control signal to protective circuit; The DSP main controller carries out rules optimization of fuzzy and handles also according to the power factor angle signal, terminal voltage signal and the three-phase voltage synchronizing signal that receive, calculates real-time trigger angle, and should send to circuits for triggering by real-time trigger angle signal; The DSP main controller also is connected with imput output circuit, and it is mutual that the two carries out signal;
Circuits for triggering receive the real-time trigger angle signal that the DSP main controller sends, and the main circuit control module is sent real-time trigger angle pulse control signal;
The input of main circuit control module links to each other with three phase network voltage, its output links to each other with the asynchronous motor input, its control end receives the real-time trigger angle pulse control signal of automatic triggering circuit, the conducting that is triggered of switching device in the main circuit control module, and determine in real time the size of switching device output voltage this output voltage to be carried in the asynchronous motor port according to real-time trigger angle pulse control signal.
Asynchronous motor energy saver provided by the invention is simple in structure, dependable performance, cost are lower, and can detect three phase network voltage synchronizing signal and asynchronous motor power factor angle signal and asynchronous motor terminal voltage signal automatically.Particularly, the present invention has following technical characterstic:
(1) the present invention adopts the DSP control technology to carry out detection of dynamic and control by real-time terminal voltage and power factor angle signal to asynchronous motor.
(2) the present invention adopts fuzzy control technology, and it does not rely on precise math model, and insensitive to the variation of parameter, adaptability is strong, has good robustness.
(3) detection method of the present invention is, by comparator the voltage of asynchronous motor, current zero-crossing signal is converted to square-wave signal, is converted to the power-factor angle digital signal at last for the collection of DSP main controller.
(4) the present invention utilizes the synchronous fundamental characteristics of three phase network voltage, and the zero passage information translation that can accurately measure the three phase network synchronous voltage signal by comparator becomes the square wave digital signal, gathers for the DSP main controller.
(5) the present invention says and adopts the digital signal processor DSP chip to be specially adapted to the real time digital signal processing of asynchronous motor.It has that speed is fast, operational precision is high, system design is simple, low in energy consumption, characteristics such as control command is flexible.
Description of drawings
Fig. 1 is a hardware system structure block diagram of the present invention.
Fig. 2 is the real-time control principle figure of DSP main controller of the present invention.
Fig. 3 is the structural representation of power factor angle detection circuit A phase of the present invention.
Fig. 4 is a DSP main controller control main flow chart of the present invention.
Embodiment
The present invention is further detailed explanation below in conjunction with accompanying drawing.
As shown in Figure 1, asynchronous motor energy saver provided by the invention comprises power circuit 1, voltage synchronization signal detection circuit 2, DSP main controller 3, circuits for triggering 4, main circuit control module 5, protective circuit 6, terminal voltage testing circuit 7, power factor angle detection circuit 8 and imput output circuit 9.
Power circuit 1 provides power supply for each parts of this energy-saving appliance.
Voltage synchronization signal detection circuit 2 one ends link to each other with three phase network voltage, and the other end links to each other with the input of DSP main controller 3.Voltage synchronization signal detection circuit 2 is used to detect three phase network voltage synchronizing signal, and this synchronizing signal is sent into DSP main controller 3 inputs.
Voltage, current signal that protective circuit 6 is used to detect asynchronous motor 10 carry out waveform transformation to it, and the digital signal after will changing is again sent into DSP main controller 3 inputs.
Terminal voltage testing circuit 7 one ends link to each other with the stator terminal voltage of asynchronous motor 10, and the other end links to each other with the input of DSP main controller 3.It is used to detect the terminal voltage signal of asynchronous motor stator, and this signal is carried out waveform transformation, convert digital signal to after, send into DSP main controller 3 inputs again.
One end of power factor angle detection circuit 8 links to each other with the input of asynchronous motor, and the other end links to each other with the input of DSP main controller 3.It is used to detect the power factor angle signal of asynchronous motor 10, and this signal is carried out waveform transformation, converts digital signal to, sends into DSP main controller 3 inputs again.
DSP main controller 3 is used to judge whether voltage, electric current surpass preset threshold, if do not surpass threshold value, energy-saving controller continues operation.If surpass threshold value, DSP main controller 3 transmits control signal to protective circuit 6, and protective circuit 6 disconnects main circuit, plays the effect of protection asynchronous motor.DSP main controller 3 carries out rules optimization of fuzzy and handles also according to the power-factor angle, terminal voltage and the voltage synchronous digital signal that collect, calculates the instantaneous value of trigger angle, and this instantaneous value is sent to circuits for triggering 4.DSP main controller 3 also carries out alternately the result after the analyzing and processing of detected various signals being sent to imput output circuit 9 with imput output circuit 9, receives the control signal of user by imput output circuit 9 inputs simultaneously.
As shown in Figure 2, DSP main controller 3 receives the three phase network voltage synchronizing signal of voltage synchronization signal detection, the power-factor angle detection signal of asynchronous motor 10, the terminal voltage detection signal of asynchronous motor 10, the various received signals that imput output circuit 9 sends.The various signals that 3 pairs of DSP main controllers collect are optimized calculation process according to fuzzy rule, obtain real-time trigger angle value.3 pairs of circuits for triggering 4 of DSP main controller this moment send real-time trigger angle signal, send the trigger angle pulse control signal by the switching device in 4 pairs of main circuit control modules 5 of circuits for triggering.The trigger angle pulse control signal that switching device in the main circuit control module 5 receives, make the switching device conducting, and determine the size of its output voltage in real time according to real-time trigger angle pulse control signal, this output voltage is carried in the asynchronous motor port, makes threephase asynchronous according to required power operation.Thereby reach real-time regulated control asynchronous motor stator terminal voltage, energy saving purposes.
Circuits for triggering 4 receive the real-time trigger angle signal that DSP main controller 3 sends, and main circuit control module 5 is sent real-time trigger angle pulse control signal.
The input of main circuit control module 5 links to each other with three phase network voltage, and output links to each other with asynchronous motor 10 inputs.The control end of main circuit control module 5 receives the real-time trigger angle pulse control signal of automatic triggering circuit 4, the conducting that is triggered of switching device in the main circuit control module 5, and determine the size of its output voltage in real time according to real-time trigger angle pulse control signal, this output voltage is carried in the asynchronous motor port, makes threephase asynchronous according to required power operation.
Energy-saving controller is controlled the strictness in the moment of the switching device break-make in the main circuit control module 5 in fact the control of output voltage and is realized.So the time of each trigger impulse generation, lasting length, the interval between and order are very important mutually, must be consistent with three phase network voltage.Voltage synchronization signal detection circuit 2 is mainly finished the location of pulse-triggered angle start time, and each voltage zero-cross goes on record constantly, with this benchmark as the trigger angle pulse signal.
Imput output circuit 9 is used to receive the various digital signals of DSP main controller 3 outputs, shows in real time and transmission, simultaneously the various control signals that also can send DSP main controller 3 inputs of imput output circuit 9; Imput output circuit 9 can also comprise communicating circuit, carries out two-way data communication with computer.
During the asynchronous motor operation, according to the difference of institute's bringing onto load size, performance index such as the power-factor angle of asynchronous motor, line voltage and motor stator terminal voltage have bigger variation.This energy-saving controller is by the real-time measurement to key indexs such as asynchronous motor power factor angle signal, three phase network voltage synchronizing signal and asynchronous motor stator terminal voltage signals, and adjust the performance index of controller system timely by FUZZY ALGORITHMS FOR CONTROL, make it reach comparatively ideal requirement of real-time control, meanwhile the operation conditions of controller system and fault message are shown and handle.
Main circuit control module 5 adopts switching device to realize, be mainly used to control asynchronous motor 10 operations, the switching device of main circuit control module 5 can adopt KS200A (or PK55F-120) bidirectional thyristor, also can adopt insulation gate leve bipolar transistor IGBT (as M57957L).
Power factor angle detection circuit of the present invention comprises the identical A of structure, B and C phase detecting circuit, is example with the A phase detecting circuit below, and its concrete structure is described.
As shown in Figure 3, the A phase detecting circuit comprises first, second comparator U11, U12, photoelectrical coupler U2, XOR gate U3, instrument transformer T1.
The A phase voltage is sampled, the A phase voltage signal links to each other with an end of resistance R 1, the other end of resistance R 1 links to each other with the end of antiparallel diode D1, D2 and is connected the other end ground connection of antiparallel diode D1, D2 with the input of the first comparator U11.Another input of the first comparator U11 links to each other with an end of resistance R 3, the other end ground connection of resistance R 3.The first comparator U11 output links to each other with an end of resistance R 2, and the other end of resistance R 2 links to each other another input end grounding of the anode tap of diode D3 and photoelectrical coupler U2 with the cathode terminal of diode D3 and the input of photoelectrical coupler U2 respectively.The output Va of photoelectrical coupler U2 links to each other another output head grounding of the anode tap of voltage stabilizing didoe W3 and photoelectrical coupler U2 with input and the cathode terminal of a voltage stabilizing didoe W3 and input of DSP main controller 3 of XOR gate U3 respectively.The output of XOR gate U3 links to each other with another input of DSP main controller 3.
In like manner, to the A phase current sampling, the A phase current signal links to each other with the input of current transformer T1, and another input of current transformer T1 links to each other with the zero line of power supply, the output of current transformer T1 links to each other another output head grounding of current transformer T1 with an end of resistance R 4; The other end of resistance R 4 links to each other with the end of an end of capacitor C 1, play a reversed role voltage stabilizing didoe W1, W2 and the input of the second comparator U12 respectively, the other end of the other end of capacitor C 1 and play a reversed role voltage stabilizing didoe W1, W2 is ground connection respectively, second another input of comparator U12 links to each other with resistance R 5 one ends, the other end ground connection of resistance R 5.The output of the second comparator U12 links to each other with an end of resistance R 6, and the other end Ia of resistance R 6 links to each other the anode tap ground connection of voltage stabilizing didoe W4 with the cathode terminal of voltage stabilizing didoe W4 and another input of XOR gate U3 respectively.The output of XOR gate U3 links to each other with another input of DSP main controller 3.
The power-factor angle testing process is: detect by the zero crossing to asynchronous motor phase voltage and phase current.With A is example mutually, and to A phase voltage sampling, phase voltage enters the first comparator U11 and compares with ground by D1, D2 voltage stabilizing, if at the positive half cycle of waveform, then the first comparator U11 exports high level signal, if at negative half period, then is output as low level signal; When output signal is high level signal, make photoelectrical coupler U2 conducting, the voltage signal Va that enters an input of DSP main controller 3 just is high level signal, this moment, the positive square-wave signal of voltage and input of XOR gate U3 linked; As shown in Figure 3, realized voltage signal Va zero crossing is detected.In like manner, detection to asynchronous motor current signal zero crossing, phase current is sampled to current signal by current transformer T1, by the second comparator U12 phase information of current zero-crossing point is converted to square-wave signal, and the positive square-wave signal of this electric current and another input of XOR gate U3 link; XOR gate U3 output is the positive square-wave signal (it is directly proportional with the power factor angle signal) of reflecting voltage and current and phase difference, another input of this phase signal and DSP main controller 3 links, and DSP main controller 3 can be measured this phase difference numerical value and calculate the size of power-factor angle this moment.
DSP main controller of the present invention control main flow chart as shown in Figure 4, it comprises beginning, startup self-detection, initialization, voltage synchronization signal detection, terminal voltage, power-factor angle detection, fuzzy query, triggering sequential subprogram, fault detect, fault judgement, scram is arranged, fault-free continues to carry out and waits for interrupt module.
DSP main controller control main flow of the present invention is as follows: the DSP main controller of at first starting shooting carries out self check to each functional module, enters the initializing set program after self check is normal.In initialization procedure, the processed offline of fuzzy control is initialized key point, because the every 10ms of system will once trigger the switching device in the main circuit control module 5, but also to finish analog-to-digital conversion, functions such as state demonstration, therefore to real-time requirement than higher, and fuzzy algorithmic approach will be passed through a large amount of mathematical operations, processor resource is taken very big, so processed offline of sampling, exactly the complicated calculations of fuzzy control is finished in initialize routine, being made into corresponding form stores according to output variable required under the different situations in RAM, to the power-factor angle that collects, after voltage synchronizing signal and terminal voltage are carried out Fuzzy Calculation, obtain the corresponding output variable of trigger angle in real time by tabling look-up, significantly reduced the complex calculation in the data processing, saved the resource of DSP main controller 3, the real-time the when system that guaranteed moves.
After initialization was finished, DSP main controller 3 carried out sample detecting to voltage synchronizing signal, terminal voltage and power factor angle signal simultaneously, and DSP main controller 3 is done corresponding digital to above signal and handled and store.
The course of work of fuzzy query is: DSP main controller 3 utilizes fuzzy rule that the various data of above detection are carried out fuzzy optimization and handles, and promptly carries out Fuzzy Calculation according to the situation of change of voltage synchronizing signal, power factor angle signal and terminal voltage signal and inquire about corresponding form obtaining required real-time trigger angle.
Triggering the process that the sequential subprogram finishes is: need to calculate the time that each start pulse signal produces, and lasting length, the interval between and order mutually, and be consistent with three phase network voltage synchronizing signal.Each trigger angle pulse control signal that obtains after the calculating offers circuits for triggering 4, and control switching device triggering and conducting in the main circuit control module 5 by the trigger angle pulse control signal of circuits for triggering 4, and determine in real time the size of switching device output voltage this output voltage to be carried in asynchronous motor 10 ports according to real-time trigger angle pulse control signal.Promptly control the main circuit switch break-over of device and make the asynchronous motor operation.
The process of fault detect is: protective circuit 6 is used to detect voltage, the current signal of asynchronous motor; digital signal after waveform transformation is sent into DSP main controller 3; judge by DSP main controller 3 whether voltage, electric current surpass preset threshold; if surpass threshold value; DSP main controller 3 transmits control signal to protective circuit 6; protective circuit 6 disconnects main circuit, reaches the effect of protection asynchronous motor.
If surpass threshold value, then continue to carry out wait and interrupt.Interruption subroutine comprises subprograms such as demonstration, keyboard interrupt, communicating interrupt.Be mainly the communication of DSP main controller 3 and peripheral hardware.
Application example:
Asynchronous motor energy saver of the present invention, its hardware circuit can adopt following element: power circuit 1 it mainly by rectifier bridge ,+12V ,-12V ,+5V ,+four groups of DC control supply of 3.3V are made up of integrated Voltage stabilizing module 7812,7912 and 7805 etc., offer each element circuit as the control power supply.It is made up of voltage synchronization signal detection circuit 2 voltage transformer, amplifier and corresponding resistance and electric capacity, and amplifier can adopt a kind of operational amplifier (as LM324 etc.) jointly; It can adopt dsp chip TMS320LF2407 or LF2812 DSP main controller 3, and each element circuit A/D converter can adopt the A/D converter of dsp chip self jointly; Circuits for triggering 4 can adopt ULN2003 chip (or triode) to drive; It is made up of main circuit control module 5 switching device and corresponding auxiliary circuit; Switching device can adopt KS200A (or PK55F-120) bidirectional thyristor, also can adopt insulation gate leve bipolar transistor IGBT (as M57957L); It is made up of protective circuit 6 voltage transformer, current transformer, contactor, amplifier and corresponding resistance and electric capacity; They mainly are made up of terminal voltage testing circuit 7 and power factor angle detection circuit 8 voltage transformer, current transformer, photoelectrical coupler, amplifier, integrated circuit and corresponding resistance and electric capacity, and photoelectrical coupler can adopt the TLP521-2 chip; XOR gate can adopt the CD4030 chip, and imput output circuit 9 mainly includes compositions such as integrated circuit, exclusion, electric capacity, diode, communicating circuit, keyboard, display.Display can adopt liquid crystal or charactron to show, and (demonstration can adopt ternary 8 bit shift register of HC595 and ULN2003 driver to drive charactron or liquid crystal display), keyboard can adopt QWERTY keyboard 64 keys and common key-press to form; Communicating circuit can adopt serial port and parallel port communication chip (can adopt RS232 or SN65LBC184 etc. as serial port chip).DSP main controller 3 can be connected with computer by imput output circuit 9, carries out two-way data communication.
Claims (2)
1. asynchronous motor energy saver, it is characterized in that: it comprises power circuit (1), voltage synchronization signal detection circuit (2), DSP main controller (3), circuits for triggering (4), main circuit control module (5), protective circuit (6), terminal voltage testing circuit (7), power factor angle detection circuit (8) and imput output circuit (9);
Power circuit (1) provides power supply for each parts of energy-saving appliance;
Voltage synchronization signal detection circuit (2) links to each other with three phase network voltage, is used to detect three phase network voltage synchronizing signal, and this three-phase voltage synchronizing signal is sent into DSP main controller (3);
Protective circuit (6) links to each other with the input of asynchronous motor (10), is used to detect voltage, the current signal of asynchronous motor (10), and to its waveform transformation, the digital signal after will changing is again sent into DSP main controller (3); Protective circuit (6) disconnects main circuit when receiving the control signal of DSP main controller (3) feedback;
Terminal voltage testing circuit (7) links to each other with the stator terminal voltage of asynchronous motor (10), is used to detect the terminal voltage signal of motor stator, and this signal is carried out waveform transformation, converts digital signal to, sends into DSP main controller (3) again;
One end of power-factor angle detection module (8) links to each other with the input of asynchronous motor (10), is used to detect the power factor angle signal of asynchronous motor (10), and this signal is carried out waveform transformation, converts digital signal to, sends into DSP main controller (3) again;
DSP main controller (3) is used to judge whether voltage, electric current surpass preset threshold, and when the electric current and voltage value surpassed threshold value, DSP main controller (3) transmitted control signal to protective circuit (6); DSP main controller (3) carries out rules optimization of fuzzy and handles also according to the power factor angle signal, terminal voltage signal and the three-phase voltage synchronizing signal that receive, calculates real-time trigger angle, and should real-time trigger angle send to circuits for triggering (4); DSP main controller (3) also is connected with imput output circuit (9), and it is mutual that the two carries out signal;
Circuits for triggering (4) receive the real-time trigger angle that DSP main controller (3) sends, and main circuit control module (5) is sent real-time trigger angle pulse control signal;
The input of main circuit control module (5) links to each other with three phase network voltage, its output links to each other with asynchronous motor (10), its control end receives the real-time trigger angle pulse control signal of automatic triggering circuit (4), the conducting that is triggered of switching device in the main circuit control module (5), and determine in real time the size of switching device output voltage this output voltage to be carried in asynchronous motor (10) port according to real-time trigger angle pulse control signal.
2. according to the described asynchronous motor energy saver of claim 1, it is characterized in that: the power factor angle detection circuit comprises the identical A of structure, B and C phase detecting circuit, includes first, second comparator (U11, U12), photoelectrical coupler (U2), XOR gate (U3), instrument transformer (T1);
One end of antiparallel first, second diode (D1, D2), first resistance R 1 that was connected connects corresponding single-phase voltage signal, and be connected the other end ground connection of antiparallel first, second diode (D1, D2) with an input of first comparator (U11); Another input of first comparator (U11) links to each other with an end of resistance R 3, the other end ground connection of resistance R 3; First comparator (U11) output links to each other with an end of resistance R 2, the other end of resistance R 2 links to each other with the cathode terminal of the 3rd diode (D3) and the input of photoelectrical coupler U2 respectively, another input end grounding of the anode tap of the 3rd diode (D3) and photoelectrical coupler (U2); An output of photoelectrical coupler (U2) links to each other another output head grounding of the anode tap of the 3rd voltage stabilizing didoe (W3) and photoelectrical coupler (U2) with an input and cathode terminal of the 3rd voltage stabilizing didoe (W3) and input of DSP main controller (3) of XOR gate (U3) respectively; The output of XOR gate (U3) links to each other with another input of DSP main controller (3);
The current signal of a corresponding phase of input termination of current transformer (T1), another input of current transformer (T1) links to each other with the zero line of power supply, an output of current transformer (T1) links to each other another output head grounding of current transformer (T1) with an end of resistance R 4; The other end of resistance R 4 links to each other with an end an of end of capacitor C 1, first, second voltage stabilizing didoe of anti-series (W1, W2) and an input of second comparator (U12) respectively, the other end of the other end of capacitor C 1 and first, second voltage stabilizing didoe (W1, W2) is ground connection respectively, another input of second comparator (U12) links to each other with resistance R 5 one ends, the other end ground connection of resistance R 5; An output of second comparator (U12) links to each other with an end of resistance R 6, and the other end of resistance R 6 links to each other the anode tap ground connection of the 4th voltage stabilizing didoe (W4) with the cathode terminal of the 4th voltage stabilizing didoe (W4) and another input of XOR gate (U3) respectively; The output of XOR gate (U3) links to each other with another input of DSP main controller (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910272427A CN101694984A (en) | 2009-10-16 | 2009-10-16 | Asynchronous motor energy saver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910272427A CN101694984A (en) | 2009-10-16 | 2009-10-16 | Asynchronous motor energy saver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101694984A true CN101694984A (en) | 2010-04-14 |
Family
ID=42093932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910272427A Pending CN101694984A (en) | 2009-10-16 | 2009-10-16 | Asynchronous motor energy saver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101694984A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101841147A (en) * | 2010-05-18 | 2010-09-22 | 福州欣联达电子科技有限公司 | Anti-lock circuit for permanent magnet motor |
| CN102315807A (en) * | 2011-09-06 | 2012-01-11 | 程小榕 | Novel soft-start intelligent power-saving controller for motor |
| CN102480120A (en) * | 2010-11-30 | 2012-05-30 | 杨波 | Asynchronous motor adaptive control and protection system |
| CN102522946A (en) * | 2012-01-06 | 2012-06-27 | 神华集团有限责任公司 | Method, device and system for controlling fan motor |
| CN102636749A (en) * | 2011-02-11 | 2012-08-15 | 王丕忠 | Method for measuring motor parameter |
| CN102655385A (en) * | 2012-01-05 | 2012-09-05 | 三一重型装备有限公司 | Soft starter of three-phase asynchronous motor and control method of soft starter |
| CN103795035A (en) * | 2012-10-31 | 2014-05-14 | 三星电机株式会社 | Power module and apparatus for preventing malfunction, and method of controlling thereof |
| CN106357190A (en) * | 2016-09-09 | 2017-01-25 | 湖南工业大学 | Motor load adaptive energy-saving control device |
| CN106357191A (en) * | 2016-09-09 | 2017-01-25 | 湖南工业大学 | Motor load adaptive energy-saving control method |
| CN107222149A (en) * | 2017-07-28 | 2017-09-29 | 天津理工大学 | Motor power factor detecting system under the conditions of a kind of non-sinusoidal power supply |
| 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 |
-
2009
- 2009-10-16 CN CN200910272427A patent/CN101694984A/en active Pending
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101841147B (en) * | 2010-05-18 | 2012-08-08 | 福州欣联达电子科技有限公司 | Anti-lock circuit for permanent magnet motor |
| CN101841147A (en) * | 2010-05-18 | 2010-09-22 | 福州欣联达电子科技有限公司 | Anti-lock circuit for permanent magnet motor |
| CN102480120A (en) * | 2010-11-30 | 2012-05-30 | 杨波 | Asynchronous motor adaptive control and protection system |
| CN102636749A (en) * | 2011-02-11 | 2012-08-15 | 王丕忠 | Method for measuring motor parameter |
| CN102315807B (en) * | 2011-09-06 | 2014-10-15 | 程小榕 | Novel soft-start intelligent power-saving controller for motor |
| CN102315807A (en) * | 2011-09-06 | 2012-01-11 | 程小榕 | Novel soft-start intelligent power-saving controller for motor |
| CN102655385A (en) * | 2012-01-05 | 2012-09-05 | 三一重型装备有限公司 | Soft starter of three-phase asynchronous motor and control method of soft starter |
| CN102655385B (en) * | 2012-01-05 | 2015-09-02 | 三一重型装备有限公司 | Threephase asynchronous machine soft starter and control method thereof |
| CN102522946A (en) * | 2012-01-06 | 2012-06-27 | 神华集团有限责任公司 | Method, device and system for controlling fan motor |
| CN102522946B (en) * | 2012-01-06 | 2015-06-10 | 神华集团有限责任公司 | Method, device and system for controlling fan motor |
| CN103795035A (en) * | 2012-10-31 | 2014-05-14 | 三星电机株式会社 | Power module and apparatus for preventing malfunction, and method of controlling thereof |
| CN106357190A (en) * | 2016-09-09 | 2017-01-25 | 湖南工业大学 | Motor load adaptive energy-saving control device |
| CN106357191A (en) * | 2016-09-09 | 2017-01-25 | 湖南工业大学 | Motor load adaptive energy-saving control method |
| CN106357190B (en) * | 2016-09-09 | 2018-07-24 | 湖南工业大学 | Motor load adaptive controller |
| CN106357191B (en) * | 2016-09-09 | 2018-09-11 | 湖南工业大学 | motor load self-adaptation control method |
| CN107222149A (en) * | 2017-07-28 | 2017-09-29 | 天津理工大学 | Motor power factor detecting system under the conditions of a kind of non-sinusoidal power supply |
| 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 |
| CN111383780B (en) * | 2018-12-27 | 2022-10-21 | 核工业西南物理研究院 | Synchronous digital trigger system for multiple sets of thyristor pulse power supplies |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101694984A (en) | Asynchronous motor energy saver | |
| CN102901936B (en) | Poweroff detection method of alternating current power supply and poweroff protection method of direct current inverter compressor | |
| CN201674273U (en) | Automatic transfer switch controller | |
| CN101841292B (en) | Direct-current motor driver of wind generating variable-propeller control system | |
| CN102570590A (en) | Solid-state changeover switch | |
| CN110412346A (en) | A kind of metering type intelligent breaker based on Internet of Things | |
| CN202837520U (en) | Power-off detection circuit for alternating-current power source and direct-current variable-frequency air conditioner | |
| CN101458306A (en) | Breaker operating characteristic test apparatus | |
| CN102156267A (en) | Experimental device for high-power photovoltaic grid-connected inverter | |
| CN101860310A (en) | Drive control circuit and method of series DC machine for pitch control system | |
| CN201298749Y (en) | Automatic transfer switching electrical appliance with double phase-correction power sources | |
| CN201352706Y (en) | Digital multifunctional motor protector | |
| CN201616805U (en) | Phase control power-saving control circuit used for asynchronous motor | |
| CN204145317U (en) | A kind of power supply unit for the test of handcart type vacuum switching characteristic | |
| CN201708756U (en) | Driving device of series excited DC motor of variable paddle control system | |
| CN104901567A (en) | Low-switching-loss model prediction control method based on single-phase grid-connected inverter | |
| CN201904605U (en) | Self-adaptive control and protecting system of asynchronous motor | |
| CN101860311A (en) | Drive device of series DC machine for pitch control system | |
| CN102361424B (en) | Fuzzy control strategy-based asynchronous motor soft starter | |
| CN206250776U (en) | A kind of commutation device | |
| CN102480120A (en) | Asynchronous motor adaptive control and protection system | |
| CN102195456B (en) | High-power series 12-pulse thyristor rectifier triggering device and method for ship | |
| CN201708755U (en) | Drive control circuit of series direct-current motor of variable propeller control system | |
| CN210201490U (en) | Based on unbalanced three-phase commutation device of low voltage distribution network | |
| CN2686188Y (en) | Isolation detector for double-power source changeover switch |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100414 |