CN2496184Y - Intelligent driving module for electric motor - Google Patents
Intelligent driving module for electric motor Download PDFInfo
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- CN2496184Y CN2496184Y CN 01219291 CN01219291U CN2496184Y CN 2496184 Y CN2496184 Y CN 2496184Y CN 01219291 CN01219291 CN 01219291 CN 01219291 U CN01219291 U CN 01219291U CN 2496184 Y CN2496184 Y CN 2496184Y
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Abstract
The utility model discloses an intelligent motor drive module, which comprises a rectifier bridge, an inverter bridge and a controlling circuit; the controlling circuit comprises a single-chip microcomputer, an EEPROM chip storing data, a drive chip for IGBT only and a protection circuit. The controlling circuit generates and outputs the PWM signal to make the IGBT of the inverter bridge continuously turn on or turn off, and to output the alternating current with frequency changing. The utility model adopts the single-chip microcomputer which can generate the PWM signal and the drive chip for IGBT only to directly control the turn-on or turn-off of the IGBT, so that the work of the whole power motor drive module is more reliable, the structure is simpler, the strong current and weak current parts do not exist in the entire module, and the entire circuit is connected with the earth.
Description
The utility model relates to a kind of electronic devices and components, refers to a kind of intelligent, controllable, heavy-duty motor driver module especially.
The 1970s and 1980s,, adopt traditional DC Transmission pattern, by the operation of dynamo control in China's industry and household appliance technical field more.The shortcoming of this DC Transmission pattern is: power consumption is big, control appliance is complicated, easy care not.Along with the continuous development of science and technology, the appearance of particularly controllable high power transistor IGBT it is found that the interchange transmission mode, promptly passes through to change the frequency shift rotating speed of motor of alternating current machine, thus the operation of control appliance.Exchange transmission mode and compare with traditional DC Transmission pattern, control section is simple in structure, reliability height, energy savings.So, frequency converter, convertible frequency air-conditioner, variable-frequency washing machine etc. have appearred.So-called interchange transmission is frequency control, reaches the purpose of speed governing exactly by the frequency of frequency converter change alternating current machine.
Frequency converter mainly is to be made of rectifier bridge and inverter bridge two parts; Its major part is the inverter bridge that six high-power switching transistor IGBT and control circuit thereof are formed.Frequency converter produces pwm signal by control circuit and makes six IGBT conductings in regular turn or shutoff, thereby produces the alternating current of frequency change, changes the rotating speed of alternating current machine.
Fig. 1 is the structural representation of inner inverter bridge of frequency converter and control circuit thereof, and it comprises control circuit, photoelectric isolating circuit, IGBT drive circuit and the inverter bridge that is made of six high power transistor IGBT.Several parts are separate more than frequency converter inside.Because the control circuit of frequency converter inside is a weak current part, and IGBT driving circuit section and inverter bridge partly are strong power part, for avoiding electromagnetic interference each other, between forceful electric power and weak current part, increased buffer circuit, make strong power system and weak electricity system independently of one another; In addition, be the correct inverter bridge work that high power transistor IGBT constitutes that drives, drive circuit must be with four accessory power supplys of isolation mutually independently.
At present, the IGBT module of formation frequency converter mainly contains two kinds of forms: a kind of is exactly simple IGBT module, and inside has only high power transistor IGBT, during use, need add control circuit, buffer circuit and drive circuit; Another kind is the IGBT module that has drive circuit, when this module is used, also need add control circuit and buffer circuit.
Because in the prior art, the IGBT module of the above two kinds of forms of the many employings of frequency converter is a motor drive module, this module and its control circuit be mutually independent, isolate, so frequency converter internal structure complexity, the cost height, volume is relatively big, the anti-interference between the strong, weak electricity of whole device is required high.
In view of the foregoing, the purpose of this utility model provides a kind of intelligent, controllable, heavy-duty motor driver module, this module becomes one high power transistor IGBT and its control circuit and drive circuit, strong power part of the prior art and weakness are partially integrated in the module, and forceful electric power ground and light current ground are altogether, volume is little, and cost is low, simple in structure.
For achieving the above object, the utility model adopts following design: a kind of intelligent electric machine driver module is characterized in that: it is made of rectifier bridge, inverter bridge and control circuit three parts; Described control circuit is again to be made of single-chip microcomputer, IGBT special driving chip and protective circuit; Described inverter bridge is made of six high power transistor IGBT; The pwm signal output of described single-chip microcomputer and the input of described IGBT special driving chip (HIN1～HIN3, LIN1～LIN3) link to each other; The I/O mouth of single-chip microcomputer links to each other with described inverter bridge current sampling circuit; The output of described chip for driving (HO1～HO3, LO1～LO3) link to each other with the grid of IGBT in the described inverter bridge respectively; The signal input end of described chip for driving (ITRIP) links to each other with the output of fault secure circuit.
Single-chip microcomputer in the described control circuit for can in have control program, can produce the single-chip microcomputer of pwm signal.Described control circuit also comprises: in have the eeprom chip of data, the I/O mouth of described single-chip microcomputer (P03, P04) links to each other with interior SDA, the SCL end that has the eeprom chip of data.A bootstrap capacitor in parallel respectively between the output Vb1 and Vs1 of the chip for driving in the described control circuit, between Vb2 and the Vs2, between Vb3 and the Vs3, described chip for driving has only the single power supply power supply.Described single-chip microcomputer links to each other with outer detecting circuit by interface, gathers external digital, analog signal.The serial port of described single-chip microcomputer links to each other with outer computer or single-chip microcomputer by interface, carries out data communication.
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is inner inverter bridge of frequency converter and a control circuit structural representation thereof in the prior art.
Fig. 2 is the utility model internal structure schematic diagram.
Fig. 3 is the utility model physical circuit figure.
As shown in Figure 2, the intelligent motor driver module of the utility model is made of rectifier bridge 1, inverter bridge 2 and control circuit 3 three parts; Control circuit be again by single-chip microcomputer, in have data eeprom chip, IGBT chip for driving and overcurrent, overheating protection circuit constitute.The pwm signal output of single-chip microcomputer links to each other with the input of chip for driving, and the grid of six IGBT in the output of chip for driving and the inverter bridge links to each other; The I/O mouth of single-chip microcomputer links to each other with the eeprom chip that has data, inverter bridge overcurrent sample circuit; The control end of chip for driving links to each other with the output of overcurrent, overheating protection circuit.In addition, single-chip microcomputer can link to each other with rectifier bridge overcurrent, undervoltage detection circuit, the ambient temperature detection circuit of outside by socket.The The whole control circuit is powered by single power supply.
Rectifier bridge converts alternating current the direct current of voltage constant to, for inverter bridge provides power supply; Control circuit produces and output pwm signal, makes IGBT conducting in regular turn or shutoff in the inverter bridge, the alternating current that output frequency changes through the IGBT special chip.When overcurrent, overheating fault appear in inverter bridge, protective circuit output control signal, notice IGBT special driving chip is cut off the output of pwm signal, turn-offs all IGBT; Simultaneously, notice singlechip CPU.
Fig. 3 is physical circuit figure of the present utility model.As shown in the figure, diode D1～D4, R16～R21, C8 constitute rectifier bridge, with alternating current L, N rectification, export a direct current power supply P+, DC-.Link to each other with the DC+ of inverter bridge behind P+ after the rectification external one big capacitor filtering.
Six IGBT Q1～Q6 form inverter bridge, and the source electrode of Q1, Q2, Q3 links to each other and links to each other with DC+; The drain electrode of Q4, Q5, Q6 links to each other and links to each other with DC-, and the drain electrode of Q1 links to each other respectively with the Q6 source electrode with the drain electrode of Q5 source electrode, Q3 with the drain electrode of Q4 source electrode, Q2, and its common port is alternating current output U, V, the W after the frequency conversion.
Control circuit comprises: single-chip microcomputer U1 (PTM9842), IGBT special driving chip U2 (PT9936), eeprom chip U3 (24C01) and overcurrent, overheating protection circuit.U1 has control program in being, can produce the special chip of pwm signal; U2 is the IGBT special driving chip, and its input directly links to each other with the pwm signal output of U1, and its output directly links to each other with the grid of IGBT, conducting or the shutoff of control IGBT; Overcurrent, overheating protection circuit detect whether overcurrent, overheated of inverter bridge, and its output links to each other with the control end of U2, and when finding above-mentioned situation, directly export control signal and cut off the output of pwm signal to U2, shutoff IGBT, thus realize soft shutoff.
As shown in the figure, pwm signal output T070～T075 of single-chip microcomputer U1 directly links to each other with input HIN1～HIN3, the LIN1～LIN3 of chip for driving U2; I/O mouth P03, the P04 of U1 and in have the U3 of data SDA, SCL the end connected in series; The I/O mouth P65 of U1 links to each other with inverter bridge current sampling circuit (overcurrent sampling resistor Rs, triode Q7, R40～R43, D11～D12, C22).
Output HO1～HO3, the LO1～LO3 of chip for driving U2 links to each other with the grid of IGBT Q1～Q6 respectively, the output Vs of U2
1, Vs
2, Vs
3Drain electrode with IGBT Q1～Q3 links to each other respectively, and the COM end of U2 links to each other with the drain electrode of IGBT Q4～Q6.The utility model chip for driving U2 adopts single 15V power supply power supply, at a bootstrap capacitor C5 in parallel, C6, C7 respectively between the Vb1 and Vs1 of U2, between Vb2 and the Vs2, between Vb3 and the Vs3.When the IGBT conducting, C5～C7 charging, when IGBT turn-offed, C5～C7 discharges provided accessory power supply to IGBT.The signal input end ITRIP of U2 links to each other with the output of fault secure circuit, when overcurrent, overheat condition appear in inverter bridge, directly exports control signal and cuts off the output of pwm signal to U2, turn-offs IGBT, realizes soft shutoff.The FLT of U2 end links to each other with the P20 mouth of single-chip microcomputer U1, and when overcurrent, overheating fault appear in inverter bridge, U2 cuts off the output of pwm signal, and when turn-offing IGBT, U2 notifies single-chip microcomputer U1 by the FLT end.In addition, at the V of chip for driving U2
CC, V
SSSeries connection one resistance R 3 and capacitor C 4 between end, the EN end of U2 links to each other with the P17 mouth of single-chip microcomputer U1; When overcurrent, overheating fault appear in inverter bridge, U2 cuts off the output of pwm signal, turn-offs IGBT; After fault disappears, prolong a period of time after (time expand is by R3, C4 decision), U2 just begins to rework, and whether U2 allows work, is determined by single-chip microcomputer U1.
Over-current detection resistance R S, triode Q7, comparator U4A etc. constitute current foldback circuit; the collector electrode of triode Q7 links to each other with the positive input of comparator U4A, and the output of comparator U4A links to each other with the signal input end ITRIP of chip for driving U2 by diode D10.
Thermistor R
T, components and parts such as comparator U4B constitute an overheating protection circuit, its output is that the output of comparator U4B links to each other with the signal input end ITRIP of chip for driving U2 by diode D9.When power motor driver module overcurrent, when overheated, protective circuit output output high level, promptly the ITRIP of U2 end is high level, output HO1～HO3, the LO1～LO3 of U2 is low level, cuts off pwm signal output, turn-offs all IGBT.
In addition, I/O mouth P60～P63, the P12～P16 of single-chip microcomputer U1 can gather outside numeral and analog signal by module interface J1, and can carry out data communication by serial port of single chip computer RXD, TXD and outer computer or single-chip microcomputer.
Above-described rectifier bridge, inverter bridge and control circuit all are integrated in the housing, constitute the intelligent power motor drive module.
Because conducting or shutoff that the utility model has adopted the single-chip microcomputer that can produce pwm signal and IGBT special driving chip directly to control IGBT, saved driving circuit section and the photoelectric isolating circuit part of IGBT in the prior art, make whole module not have the branch of forceful electric power and weakness, entire circuit connects altogether, the work of whole power motor driver module is more reliable, structure is simpler, volume is little thereby make, and cost is low.The utility model chip for driving adopts the single power supply power supply, has changed the problem that driving circuit section wants external four suspended power supplies to power in the prior art.The utility model uses soft switch technique, the Uce of IGBT be 0 or Ice be 0 o'clock, turn-off, conducting IGBT, reduce switching loss, reduce electromagnetic interference.
The above only is preferred embodiment of the present utility model, and the equivalent transformation of any basic utility model technical scheme all belongs within the utility model protection range.
Claims (6)
1, a kind of intelligent electric machine driver module is characterized in that: it is made of rectifier bridge, inverter bridge and control circuit three parts; Described control circuit is again to be made of single-chip microcomputer, IGBT special driving chip and protective circuit;
Described inverter bridge is made of six high power transistor IGBT;
The pwm signal output of described single-chip microcomputer and the input of described IGBT special driving chip (HIN1～HIN3, LIN1～LIN3) link to each other; The I/O mouth of single-chip microcomputer links to each other with described inverter bridge current sampling circuit;
The output of described chip for driving (HO1～HO3, LO1～LO3) link to each other with the grid of IGBT in the described inverter bridge respectively; The signal input end of described chip for driving (ITRIP) links to each other with the output of fault secure circuit.
2, intelligent electric machine driver module according to claim 1 is characterized in that: the single-chip microcomputer in the described control circuit for can in have control program, can produce the single-chip microcomputer of pwm signal.
3, intelligent electric machine driver module according to claim 1, it is characterized in that: described control circuit also comprises: in have the eeprom chip of data, the I/O mouth of described single-chip microcomputer (P03, P04) links to each other with interior SDA, the SCL end that has the eeprom chip of data.
4, intelligent electric machine driver module according to claim 1, it is characterized in that: a bootstrap capacitor in parallel respectively between the output Vb1 and Vs1 of the chip for driving in the described control circuit, between Vb2 and the Vs2, between Vb3 and the Vs3, described chip for driving has only the single power supply power supply.
5, intelligent electric machine driver module according to claim 1, it is characterized in that: described single-chip microcomputer links to each other with outer detecting circuit by interface, gathers external digital, analog signal.
6, intelligent electric machine driver module according to claim 1 is characterized in that: the serial port of described single-chip microcomputer links to each other with outer computer or single-chip microcomputer by interface, carries out data communication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01219291 CN2496184Y (en) | 2001-04-10 | 2001-04-10 | Intelligent driving module for electric motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01219291 CN2496184Y (en) | 2001-04-10 | 2001-04-10 | Intelligent driving module for electric motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2496184Y true CN2496184Y (en) | 2002-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01219291 Expired - Fee Related CN2496184Y (en) | 2001-04-10 | 2001-04-10 | Intelligent driving module for electric motor |
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| CN (1) | CN2496184Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102781130A (en) * | 2012-07-30 | 2012-11-14 | 东莞市精诚电能设备有限公司 | Large-power electromagnetic cooker circuit based on power electronic technology |
| CN103089659A (en) * | 2011-10-31 | 2013-05-08 | 朱小雄 | Water pump with water shortage protection device |
| CN103089660A (en) * | 2011-10-31 | 2013-05-08 | 朱小雄 | Water pump with water shortage protection device |
| CN105552849A (en) * | 2016-01-19 | 2016-05-04 | 珠海格力节能环保制冷技术研究中心有限公司 | Phase default judgment circuit and judgment method for brushless DC motor |
| CN106559024A (en) * | 2015-09-24 | 2017-04-05 | 韩正强 | A kind of controllable silicon drive module |
| CN106802632A (en) * | 2015-11-26 | 2017-06-06 | 韩正强 | Split modular drive control device based on controllable silicon |
| CN113595466A (en) * | 2021-08-26 | 2021-11-02 | 浙江台运汽车科技有限公司 | Electric isolation circuit of motor controller |
-
2001
- 2001-04-10 CN CN 01219291 patent/CN2496184Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089659A (en) * | 2011-10-31 | 2013-05-08 | 朱小雄 | Water pump with water shortage protection device |
| CN103089660A (en) * | 2011-10-31 | 2013-05-08 | 朱小雄 | Water pump with water shortage protection device |
| CN103089660B (en) * | 2011-10-31 | 2015-12-16 | 朱小雄 | A kind of water pump with water-shortage protection device |
| CN103089659B (en) * | 2011-10-31 | 2015-12-16 | 朱小雄 | A kind of water pump with water-shortage protection device |
| CN102781130A (en) * | 2012-07-30 | 2012-11-14 | 东莞市精诚电能设备有限公司 | Large-power electromagnetic cooker circuit based on power electronic technology |
| CN106559024A (en) * | 2015-09-24 | 2017-04-05 | 韩正强 | A kind of controllable silicon drive module |
| CN106559024B (en) * | 2015-09-24 | 2020-03-24 | 韩正强 | Silicon controlled rectifier driving module |
| CN106802632A (en) * | 2015-11-26 | 2017-06-06 | 韩正强 | Split modular drive control device based on controllable silicon |
| CN106802632B (en) * | 2015-11-26 | 2020-09-08 | 韩正强 | Split modular drive controller based on controllable silicon |
| CN105552849A (en) * | 2016-01-19 | 2016-05-04 | 珠海格力节能环保制冷技术研究中心有限公司 | Phase default judgment circuit and judgment method for brushless DC motor |
| CN105552849B (en) * | 2016-01-19 | 2019-01-18 | 珠海格力电器股份有限公司 | Phase-loss judging circuit and judging method for direct-current brushless motor |
| CN113595466A (en) * | 2021-08-26 | 2021-11-02 | 浙江台运汽车科技有限公司 | Electric isolation circuit of motor controller |
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Legal Events
| Date | Code | Title | Description |
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| 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 |