CN102751927A - Series excitation brush direct current motor controller - Google Patents
Series excitation brush direct current motor controller Download PDFInfo
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- CN102751927A CN102751927A CN2012102706814A CN201210270681A CN102751927A CN 102751927 A CN102751927 A CN 102751927A CN 2012102706814 A CN2012102706814 A CN 2012102706814A CN 201210270681 A CN201210270681 A CN 201210270681A CN 102751927 A CN102751927 A CN 102751927A
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- amplifier board
- power amplifier
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- Control Of Direct Current Motors (AREA)
Abstract
The invention discloses a series excitation brush direct current motor controller. The controller comprises a control panel and a power amplifier board, wherein the control panel comprises a power supply module, a microprogrammed control unit (MCU) module, an accelerator input module, a signal acquisition module, a pulse width modulation (PWM) drive module and a fault output module, the power amplifier board comprises a power switch element metal oxide semiconductor field effect transistor (MOSFET), a fly-wheel diode, a power capacitor, a discharge resistor and a thermosensitivity resistor, the above modules and elements are electrically connected, and the power amplifier board is provided with four large current terminals which are used for connecting with contactors on the front of a motor armature coil, a battery and a motor excitation coil respectively. The controller has the advantages that the characteristics of variable speed and reverse brake control are achieved, the controller has current, voltage and temperature protection control functions for the motor, the galloping is prevented, and safety of operators can be effectively protected.
Description
Technical field
The present invention relates to four line series excitation has the brush DC motor controller, belongs to technical field of automotive electronics.
Background technology
Series DC machine is the important part of middle-size and small-size motor vehicle, and its effect is the electric energy that receives batteries, and is converted into mechanical energy, and for the car load walking provides power, series DC machine has good speed adjustment features, the characteristics that detent torque is big.And than combustion engine powered system; It is little, pollution-free that motor power system motor vehicle has a noise, distinguishing features such as capacity usage ratio height; For environmental requirement higher application scenario such as golf course; Go sightseeing, station inspection etc. use the motor vehicle of motor power system with the obvious advantage.
The electrical source of power of motor vehicle car load is generally the lead accumulator group of 48V; Therefore series excitation DC motor is to be operated in the environment of low-voltage, big electric current; Series DC machine operation quality is directly decided by the series DC machine controller; Need the operation of the safe and reliable control series DC machine of controller ability, to improve the comfortableness of driving, protection driver's safety.Therefore, stability, the reliability to the series DC machine controller has higher requirement.
Summary of the invention
The objective of the invention is to the demand is that middle-size and small-size motor vehicle provides a kind of series DC machine controller efficient and easy for installation.Be used for the motor torque and the speed of electri forklift, electric golf cart and Sightseeing Trolley are controlled, and the vehicular electric machine dynamical system carried out the real-time guard of temperature, electric current and voltage simultaneously.This controller is applicable to four line series excitation DC motors.
The scheme of taking for the present invention that achieves the above object is:
Said series excitation has the brush DC motor controller, comprises control board and power amplifier board, and wherein control board comprises power module, MCU module (micro-control unit), accelerator input module, signal acquisition module, PWM driver module and fault output module; Power amplifier board comprises power switch component MOSFET, fly-wheel diode, power capacity, discharge resistance and thermo-sensitive resistor; Above-mentioned each module and components and parts are electrically connected; Power amplifier board is provided with four big current terminals, be respectively applied for armature coil, battery, motor excitation coil before contactor link to each other.
Said MCU module adopts PIC16F886, contains voltage protection, temperature protection, PWM calculating, fault detect, house dog program; Power switch component MOSFET adopts IRF2807, and thermo-sensitive resistor adopts MF5A-2-395-403.
Adopt the advantage of the series DC machine controller of the present invention of such scheme to be:
1) has infinitely variable speeds and plugging control characteristic;
2) can quiet high-frequency operation.Control circuit adopts pulse width modulation circuit, makes control frequency reach 15kHz;
3) the current of electric linearity reduces during the controller excess temperature, and inner thermo-sensitive resistor detects the controller temperature, and when the controller temperature surpassed 80 ℃, output current restriction linearity reduced, and when surpassing 120 ℃, output loop breaks off, and has improved the motor safety performance.After controller cooled down, electric current restriction and various function were recovered automatically;
4) current of electric reduces by half during controller low temperature.Inner thermo-sensitive resistor detects the controller temperature, and when the controller temperature was lower than-25 ℃, the output current restriction reduced by half, and when being lower than-40 ℃, output loop breaks off, and has improved the motor safety performance.After the controller temperature raise, electric current restriction and various function were recovered automatically.
5) have overvoltage and under-voltage protection function.The controller rated voltage is 48V, and when cell voltage surpassed 60V, controller cut off output; When cell voltage was lower than 40V, controller output current restriction linearity reduced; When cell voltage was lower than 32V, controller cut off output, with the protection battery.
6) have overcurrent protection function, design of Controller the output current restriction, prevent that output current is excessive, protection controller and motor.
7) have operating sequence error protection function, make operating characteristics safer (being applicable to that accelerator is potentiometer formula, Hall pedal).When controller powered on, like accelerator return (accelerator output surpass 20%) not, then controller quit work.Indicator light newspaper fault alert prevents driving, protection operating personnel's safety.
Description of drawings
Fig. 1 is the structured flowchart that series excitation according to the invention has the brush DC motor controller to be connected with motor.
Fig. 2 is that series excitation of the present invention has brush DC motor controller handling procedure flow chart.
Embodiment
Below in conjunction with accompanying drawing series DC machine controller of the present invention is described further.
As shown in Figure 1, said series excitation has the brush DC motor controller, comprises control board and power amplifier board, and wherein control board comprises power module, MCU module, accelerator input module, signal acquisition module, PWM driver module and fault output module; Power amplifier board comprises power switch component MOSFET, fly-wheel diode, power capacity, discharge resistance and thermo-sensitive resistor; Above-mentioned each module and components and parts are electrically connected; Power amplifier board has four big current terminals, be respectively applied for armature coil, battery, motor excitation coil before contactor link to each other; Power amplifier board has four big current terminal B+, A2, B-, M-, and wherein B+ and A2 receive the A1 and the A2 end of four line series DC machines respectively, and B+ receives the positive pole of battery simultaneously, and B-receives the negative pole of battery.Contactor is a single-pole double throw, is used to control motor positive and inverse, and contactor is controlled by external switch.When motor was just changeing, the sense of current was B+ → A1 → A2 → F1 → F2 → M-→ B-; When motor reversed, the sense of current was B+ → A1 → A2 → F2 → F1 → M-→ B-.
Said MCU module adopts PIC16F886, contains voltage protection, temperature protection, PWM calculating, fault detect, house dog program; Power switch component MOSFET adopts IRF2807, and thermo-sensitive resistor adopts MF5A-2-395-403.
Fig. 2 is for the flow chart of series DC machine controller of the present invention, and is as shown in the figure, after this director demon is accomplished initialization; Get into the interrupt routine of 4ms, gather input signal, judge whether voltage is normal; If normally judge again whether temperature is normal, if normally judge again whether accelerator signal is normal, if normally then calculate PWM; Output drive signal, motor rotation.If detect overruns such as voltage, temperature or electric current, then get into defence program.
This controller has three types of defencive functions, is respectively: current protection and voltage protection, temperature protection.It below is each defencive function implementation procedure.
voltage protection: later on by the controller collection, controller judges whether overvoltage or under-voltage to cell voltage through electric resistance partial pressure.The controller rated voltage is 48V, and when cell voltage surpassed 60V, controller cut off output, produces fault-signal simultaneously and is given to the fault output module, behind the generation high voltage fault, detects cell voltage less than 58V, removes fault, and controller recovers output; When cell voltage was lower than 40V, controller output current restriction linearity reduced, and controller produces low pressure derate fault; When cell voltage was lower than 32V, controller cut off output, and with the protection battery, controller produces low voltage failure simultaneously.Be higher than 41V when controller detects cell voltage, remove fault-signal.
temperature protection: use MF5A-2-395-403 as thermo-sensitive resistor; Controller turn-offs PWM output when excess temperature or low temperature, prevent that components and parts from suffering damage.Detailed process is: thermo-sensitive resistor is fixed on the aluminium base of controller, after controller collects temperature signal, compares with the temperature array of finishing writing in advance, draws actual temperature value.The controller normal working temperature scope of program setting is-25 ℃ to 80 ℃, and the controller temperature is not within normal range (NR) the time, and controller produces fault-signal.When the temperature of controller surpassed 80 ℃, controller output current restriction linearity reduced, and controller produces temperature derate fault simultaneously, after the controller temperature is lower than 78 ℃, removed fault, and controller is normally exported; When the controller temperature was lower than-25 ℃, the restriction of controller output current reduced by half, and controller produces temperature derate fault simultaneously, after the controller temperature is higher than-23 ℃, removed fault, and controller is normally exported; When the controller temperature is lower than-40 ℃ (or being higher than 120 ℃), controller cuts off output, and with protection controller and battery, controller produces the overtemperature fault simultaneously, after the controller temperature is higher than-38 ℃ (or being lower than 117 ℃), removes fault, and controller is normally exported.
Claims (2)
1. a series excitation has the brush DC motor controller, and it is characterized in that: this controller comprises control board and power amplifier board, and wherein control board comprises power module, MCU module, accelerator input module, signal acquisition module, PWM driver module and fault output module; Power amplifier board comprises power switch component MOSFET, fly-wheel diode, power capacity, discharge resistance and thermo-sensitive resistor; Above-mentioned each module and components and parts are electrically connected; Power amplifier board has four big current terminals, be respectively applied for armature coil, battery, motor excitation coil before contactor link to each other.
2. series excitation as claimed in claim 1 has the brush DC motor controller, it is characterized in that: said MCU module adopts PIC16F886, has voltage protection, temperature protection, PWM calculating, fault detect, house dog program; Power switch component MOSFET adopts IRF2807, and thermo-sensitive resistor adopts MF5A-2-395-403.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102706814A CN102751927A (en) | 2012-08-01 | 2012-08-01 | Series excitation brush direct current motor controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102706814A CN102751927A (en) | 2012-08-01 | 2012-08-01 | Series excitation brush direct current motor controller |
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| Publication Number | Publication Date |
|---|---|
| CN102751927A true CN102751927A (en) | 2012-10-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012102706814A Pending CN102751927A (en) | 2012-08-01 | 2012-08-01 | Series excitation brush direct current motor controller |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102979712A (en) * | 2012-12-15 | 2013-03-20 | 合肥同智机电控制技术股份有限公司 | Electric compressor controller for automobile air conditioner |
| CN107052904A (en) * | 2017-04-16 | 2017-08-18 | 赵洁 | A kind of safety monitoring device of Digit Control Machine Tool |
| CN108162801A (en) * | 2017-12-29 | 2018-06-15 | 常州市武起常乐电机有限公司 | The control method of small-sized pure electric automobile electric machine controller |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2681484A1 (en) * | 1991-09-18 | 1993-03-19 | Pellenc & Motte | Electronic control box for a brushless direct-current motor, with electronic commutation |
| CN101860310A (en) * | 2010-06-07 | 2010-10-13 | 苏州能健电气有限公司 | Drive control circuit and method of series DC machine for pitch control system |
| CN202818205U (en) * | 2012-08-01 | 2013-03-20 | 遵义天义利威机电有限责任公司 | Series-excited brush direct-current motor controller |
-
2012
- 2012-08-01 CN CN2012102706814A patent/CN102751927A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2681484A1 (en) * | 1991-09-18 | 1993-03-19 | Pellenc & Motte | Electronic control box for a brushless direct-current motor, with electronic commutation |
| CN101860310A (en) * | 2010-06-07 | 2010-10-13 | 苏州能健电气有限公司 | Drive control circuit and method of series DC machine for pitch control system |
| CN202818205U (en) * | 2012-08-01 | 2013-03-20 | 遵义天义利威机电有限责任公司 | Series-excited brush direct-current motor controller |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102979712A (en) * | 2012-12-15 | 2013-03-20 | 合肥同智机电控制技术股份有限公司 | Electric compressor controller for automobile air conditioner |
| CN107052904A (en) * | 2017-04-16 | 2017-08-18 | 赵洁 | A kind of safety monitoring device of Digit Control Machine Tool |
| CN108162801A (en) * | 2017-12-29 | 2018-06-15 | 常州市武起常乐电机有限公司 | The control method of small-sized pure electric automobile electric machine controller |
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Application publication date: 20121024 |