CN2567869Y - Controllor of frequency conversion brushless DC compressor without sensor - Google Patents
Controllor of frequency conversion brushless DC compressor without sensor Download PDFInfo
- Publication number
- CN2567869Y CN2567869Y CN02264226U CN02264226U CN2567869Y CN 2567869 Y CN2567869 Y CN 2567869Y CN 02264226 U CN02264226 U CN 02264226U CN 02264226 U CN02264226 U CN 02264226U CN 2567869 Y CN2567869 Y CN 2567869Y
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- circuit
- direct current
- detection circuit
- compressor
- voltage
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Abstract
The utility model relates to a controller of a direct current compressor without a sensor for frequency conversion or a brush. The utility model comprises an SCM U1, a voltage stabilization filter circuit, a driving control circuit, a direct current voltage detection circuit, a counter electromotive force detection circuit, a compressor temperature detection circuit, a rotating speed control signal circuit and a clock oscillating circuit, wherein the SCM U1 is connected with the voltage stabilization filter circuit, the driving control circuit, the direct current voltage detection circuit, the counter electromotive force detection circuit, the compressor temperature detection circuit, the rotating speed control signal circuit and the clock oscillating circuit; the driving control circuit is connected with the direct current voltage detection circuit and the counter electromotive force detection circuit; the voltage stabilization filter circuit provides working voltage. The utility model can be directly applied to a cooling device in the moving environment of low voltage direct current supply. The utility model can start smoothly and regulate speed smoothly without a board in the application situation which is strongly vibrated, and has the advantages of low cost and energy saving.
Description
The utility model relates to a kind of no transducer frequency conversion brushless direct current compressor controller, belongs to technical field of refrigeration equipment, is mainly used in the drive controlling of mobile object dc low-voltage electric power system middle low power direct current compressors such as car, ship.
Family expenses and the employed compressor of commercial refrigerating device are directly driven by high-voltage alternating mostly at present, adopt start-stop than control, can produce bigger startup impulse current, and on-off frequency is more than variable frequency control, is unfavorable for energy-conservation.This kind compressor more is not suitable for mobile occasions such as car, ship, and this applied environment does not all directly provide ac high-voltage, mostly by 12V, 24V DC-voltage supply.And frequent vibration is arranged more, adopt common compressor can not satisfy the operation needs.There is the AC frequency conversion of employing compressor set lower again than DC frequency-changeable compressor unit efficiency.The baby compressor that has adopts brush to be arranged or do not have and is brushed with sensor controller, and brushless electric machine needs the commutation device, and mechanical wear influences useful life.Sensor device is arranged with the aggrandizement apparatus complexity, thereby influence running reliability of motor.
The purpose of this utility model is that a kind of no transducer frequency conversion brushless direct current compressor controller will be provided, can in the mobile environment of low-voltage direct current supply, directly apply to refrigerating plant, in the strong application scenario of vibration, start steady, electrodeless stepless speed control, and cost is low and energy-conservation.
The purpose of this utility model is achieved like this, a kind of no transducer frequency conversion brushless direct current compressor controller, comprise single-chip microcomputer U1, filter circuit of pressure-stabilizing, Drive and Control Circuit, the direct current voltage detecting circuit, counter electromotive force detection circuit, the compressor temperature testing circuit, speed controling signal circuit and clock oscillation circuit, single-chip microcomputer U1 and filter circuit of pressure-stabilizing, Drive and Control Circuit, the direct current voltage detecting circuit, counter electromotive force detection circuit, the compressor temperature testing circuit, the speed controling signal circuit is connected with clock oscillation circuit, Drive and Control Circuit is connected with counter electromotive force detection circuit with the direct current voltage detecting circuit, and filter circuit of pressure-stabilizing provides operating voltage.
The utility model can be at supply voltage when 10V be between 40V, provide compressor needed normal electricity supply, rotating speed is adjustable on a large scale, thereby realization frequency control, in the strong occasion of vibration, reach level and smooth startup and electrodeless stepless speed control, on-off frequency is than lacking of the direct driving of high-voltage alternating and energy-conservation.Do not need the installation site transducer in the compressor, reduce installation procedure, save cost, circuit is simple, and the electric current and voltage protective circuit is simple and reliable.
Below in conjunction with accompanying drawing the utility model is further described below.
Accompanying drawing is the utility model electrical schematic diagram.
The utility model can be used in 12V, 24V and 36V direct current supply, and existing is the example explanation with the 24V power supply.Single-chip microcomputer U1 realizes all controlled function of system, and U1 adopts M68HC705MP16.It detects the speed controling signal of analog quantity input or the serial digital control signal that pin 46,47 provides by pin 6, determines compressor rotary speed after internal conversion.Pin 5 detects the compressor housing temperature.Pin 2,3,4 detects direct current machine three-phase back electromotive force respectively, according to these signal deciding pin 25,26,27,28,30,31 output signals, provides drive control signal, the control compressor operation.Pin 1 detects supply voltage, carries out overvoltage and under-voltage protection function after software is differentiated.Pin 63 detects direct current, starts and protection usefulness for the compressor control.
Clock oscillation circuit is made up of with U1 pin 52,53 capacitor C 1, C2 and crystal oscillator Y1 and is connected, and clock pulse is provided for single-chip microcomputer U1.
Socket J1 and upper single-chip microcomputer are connected to form serial communication loop, are connected with the pin 46,47 of U1, and digital controlled signal is provided.
Filter circuit of pressure-stabilizing is made up of pressurizer IC2, IC3, resistance R 20～R24, capacitor C 18～C19.External power is introduced by socket J3, and after R23, R24 dividing potential drop, the pin 1 that advances single-chip microcomputer U1 through sampling resistor R20 carries out voltage detecting and mistake, under-voltage control.24V voltage is provided+the 15V direct voltage by pressurizer IC3 after R22 divider resistance dividing potential drop, C20 filtering.Should+the 15V direct voltage after R21 dividing potential drop, C19 filtering, by pressurizer IC2 voltage stabilizing, provides after the C18 filtering+5V digital circuit operating voltage again.IC2 adopts LM7805, and IC3 adopts LM7815.
Resistance R 17 is a current sense resistor in the direct current voltage detecting circuit, the amplifying circuit that resistance R 15, R16, R18 and integrated circuit (IC) 7A form amplifies the detected current signal of R17, after resistance R 13, R14, diode D1, capacitor C 17 matched filterings, send U1 pin 63 to detect electric current by resistance R 19 samplings.The comparison circuit that signal after the amplification is formed through resistance R 10～R12 and integrated circuit (IC) 7B relatively back formation overcurrent protection signal send U1 pin 18,19,20,21, carries out overcurrent protection by U1.IC7 adopts LM358.
In the counter electromotive force detection circuit, the three-phase back electromotive force arrives by resistance R 35 through resistance R 7～R9, R36, the filtering sampling circuit that capacitor C 21 is formed and by resistance R 37, R38, the filtering sampling circuit that capacitor C 22 is formed reaches by resistance R 39, R40, after the filtering sampling circuit sampling filtering that capacitor C 23 is formed, with by integrated circuit (IC) 1, resistance R 32, R33, R34, R29, R30, the comparison circuit that R31 forms with by resistance R 41, R42, the neutral point voltage of the neutral point generative circuit that capacitor C 24 is formed compares, provide the zero cross fired signal by resistance R 43, R44, send the pin 2 of U1 after drawing on the R45,3,4, treated formation control signal.IC1 adopts LP339M.
In the speed controling signal circuit, external analog amount control signal send U1 pin 6 to form speed controling signal through socket J5 input by resistance R 27, R28 sampling.
In the compressor temperature testing circuit, the compressor housing temperature sensor signal send U1 pin 5 to form overheated control signal through socket J4 input by resistance R 25, R26 sampling.
Claims (1)
1, a kind of no transducer frequency conversion brushless direct current compressor controller, it is characterized in that comprising single-chip microcomputer U1, filter circuit of pressure-stabilizing, Drive and Control Circuit, the direct current voltage detecting circuit, counter electromotive force detection circuit, the compressor temperature testing circuit, speed controling signal circuit and clock oscillation circuit, single-chip microcomputer U1 and filter circuit of pressure-stabilizing, Drive and Control Circuit, the direct current voltage detecting circuit, counter electromotive force detection circuit, the compressor temperature testing circuit, the speed controling signal circuit is connected with clock oscillation circuit, Drive and Control Circuit is connected with counter electromotive force detection circuit with the direct current voltage detecting circuit, and filter circuit of pressure-stabilizing provides operating voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02264226U CN2567869Y (en) | 2002-09-06 | 2002-09-06 | Controllor of frequency conversion brushless DC compressor without sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02264226U CN2567869Y (en) | 2002-09-06 | 2002-09-06 | Controllor of frequency conversion brushless DC compressor without sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2567869Y true CN2567869Y (en) | 2003-08-20 |
Family
ID=33730466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN02264226U Expired - Lifetime CN2567869Y (en) | 2002-09-06 | 2002-09-06 | Controllor of frequency conversion brushless DC compressor without sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2567869Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102594076A (en) * | 2012-03-09 | 2012-07-18 | 江门市凯斯莱工贸有限公司 | Variable-frequency three-phase brushless permanent magnet motor |
| CN103812398A (en) * | 2013-01-17 | 2014-05-21 | 常州先进制造技术研究所 | Instantaneous high-energy drive direct-current servo control device |
| CN105553350A (en) * | 2016-02-24 | 2016-05-04 | 台州谊聚机电有限公司 | Motor control circuit in water pump system |
| CN105587491A (en) * | 2016-02-24 | 2016-05-18 | 台州谊聚机电有限公司 | Photovoltaic water pump system |
| CN106208841A (en) * | 2016-08-30 | 2016-12-07 | 上海德麦电子科技有限公司 | A kind of sinusoidal control device without DC brushless motor suddenly |
-
2002
- 2002-09-06 CN CN02264226U patent/CN2567869Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102594076A (en) * | 2012-03-09 | 2012-07-18 | 江门市凯斯莱工贸有限公司 | Variable-frequency three-phase brushless permanent magnet motor |
| CN102594076B (en) * | 2012-03-09 | 2014-09-24 | 江门市凯斯莱工贸有限公司 | Variable-frequency three-phase brushless permanent magnet motor |
| CN103812398A (en) * | 2013-01-17 | 2014-05-21 | 常州先进制造技术研究所 | Instantaneous high-energy drive direct-current servo control device |
| CN105553350A (en) * | 2016-02-24 | 2016-05-04 | 台州谊聚机电有限公司 | Motor control circuit in water pump system |
| CN105587491A (en) * | 2016-02-24 | 2016-05-18 | 台州谊聚机电有限公司 | Photovoltaic water pump system |
| CN106208841A (en) * | 2016-08-30 | 2016-12-07 | 上海德麦电子科技有限公司 | A kind of sinusoidal control device without DC brushless motor suddenly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20120906 Granted publication date: 20030820 |