CN204334388U - A kind of brake control circuit of series-wound motor - Google Patents
A kind of brake control circuit of series-wound motor Download PDFInfo
- Publication number
- CN204334388U CN204334388U CN201420436996.6U CN201420436996U CN204334388U CN 204334388 U CN204334388 U CN 204334388U CN 201420436996 U CN201420436996 U CN 201420436996U CN 204334388 U CN204334388 U CN 204334388U
- Authority
- CN
- China
- Prior art keywords
- circuit
- diode
- power switching
- series
- power
- 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.)
- Expired - Fee Related
Links
Landscapes
- Control Of Direct Current Motors (AREA)
Abstract
The utility model discloses a kind of brake control circuit of series-wound motor, comprise series-wound motor, uncontrollable rectifying part, pulse-width modulation buck chopper power unit and braking circuit, uncontrollable rectifying part comprises 4 diodes, resistance and electric capacity, pulse-width modulation buck chopper power unit comprises controller, first power electric switch device of full-control type and fly-wheel diode, controller comprises digital microcontroller, tension measuring circuit, current measurement circuit, the isolated drive circuit of the first device for power switching and the second device for power switching, braking circuit is the circuit of the second device for power switching and resistant series, braking circuit is in parallel with armature winding.During braking, first control the break-make point duty ratio of the first device for power switching; The terminal voltage of motor is down to and is less than or equal to brake voltage; Control conducting second device for power switching, connect the braking circuit of motor; Record current-limiting resistance electric current and the second excitation winding difference between current close to zero time, cut off the electricity supply, complete braking.
Description
Technical field
The utility model belongs to motor control technology field, relates to a kind of brake control circuit of series-wound motor.
Background technology
Excitation winding due to series-wound motor in conventional art is connected with armature winding, the electromagnetic torque direction also existed to change series-wound motor realizes braking, must four power electronic switchings be set in motor driven main circuit, exchange the connection end of its excitation winding and armature winding, circuit structure is complicated, the problem that control method is loaded down with trivial details.
Utility model content
The purpose of this utility model is to provide a kind of brake control circuit of series-wound motor, solve in prior art because the excitation winding of series-wound motor is connected with armature winding, electromagnetic torque direction to change series-wound motor realizes braking, must four power electronic switchings be set in motor driven main circuit, exchange the connection end of its excitation winding and armature winding, circuit structure is complicated, the problem that control method is loaded down with trivial details.
The technical scheme that the utility model adopts is: a kind of brake control circuit of series-wound motor, comprise series-wound motor, uncontrollable rectifying part, pulse-width modulation buck chopper power unit and braking circuit, described pulse-width modulation buck chopper power unit comprises controller, first power electric switch device of full-control type and fly-wheel diode, described controller comprises digital microcontroller, tension measuring circuit, current measurement circuit, the isolated drive circuit of the first device for power switching and the second device for power switching, described braking circuit is the circuit of the second device for power switching and current-limiting resistance series connection, second device for power switching respectively with one end of current-limiting resistance, isolated drive circuit is connected, the other end of the second device for power switching is connected with armature winding one end of series-wound motor, first excitation winding one end respectively, the other end of the first excitation winding is connected with the positive terminal of one end of the first device for power switching, tension measuring circuit, fly-wheel diode respectively, the other end of current-limiting resistance is connected with other end armature winding one end of series-wound motor, second excitation winding one end through the Single port of current measurement circuit again, the other end of the second excitation winding is connected with the negative pole end of tension measuring circuit, fly-wheel diode, uncontrollable rectifying part respectively behind the another port of current measurement circuit, tension measuring circuit, current measurement circuit output are connected with digital microcontroller respectively, the output of digital microcontroller is connected with isolated drive circuit, first device for power switching is connected with isolated drive circuit, uncontrollable rectifying part respectively.
As the improvement of technique scheme, described uncontrollable rectifying part comprises the first diode, the second diode, the 3rd diode and the 4th diode, resistance and electric capacity, and the negative pole one termination AC power of the first diode is also connected in positive pole one end of the 3rd diode; Negative pole one end of 3rd diode is connected behind the another port of current measurement circuit with negative pole one end of the 4th diode, negative pole one end of electric capacity, the other end of the second excitation winding respectively; The positive pole one termination AC power of the 4th diode is also connected with negative pole one end of the second diode; Positive pole one end of first diode, positive pole one end of the second diode are connected with one end of resistance respectively; The other end of resistance is connected with positive pole one end of electric capacity, the first device for power switching respectively.
The utility model compared with prior art tool has the following advantages: the DC chopped-wave step-down voltage controller power source adopting pulse width modulation mode to control is that series-wound motor is powered, first its terminal voltage is adjusted to an appropriate value when motor stops, rear conducting one power electronic switching, to the branch road of motor armature winding parallel one string current limiting resistance, realize electromagnetic braking; Meanwhile, measure the electric current that motor second excitation winding electric current and current-limiting resistance pass through, the difference of both calculating, when difference close to zero time cut off the power supply of motor.The utility model need not exchange the connection end of excitation winding and armature winding when series-wound motor stopping brake, only control a power electronic switching and switch with regard to main circuit when realizing braking.
Accompanying drawing explanation
The circuit theory diagrams of the series-wound motor drive system embodiment that Fig. 1 applies for the utility model method;
Fig. 2 is the control flow chart of the utility model control method for series-wound motor drive system embodiment.
11 isolated drive circuits in figure, 2 tension measuring circuits, 3 digital microcontrollers, 4 current measurement circuits, 5 controllers, 6 uncontrollable rectifying part, 7 braking circuits
M series-wound motor, D1 first diode, D2 second diode, D3 the 3rd diode, D4 the 4th diode, D fly-wheel diode, L1 first excitation winding, L2 second excitation winding,
R1 resistance, R2 current-limiting resistance, C electric capacity, the electric current that i1 motor excitation winding passes through, the electric current that i2 current-limiting resistance passes through, V1 first device for power switching, the second device for power switching V2 second device for power switching
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
As shown in Figure 1, a kind of brake control circuit of series-wound motor, comprise series-wound motor M, uncontrollable rectifying part 6, pulse-width modulation buck chopper power unit and braking circuit 7, described pulse-width modulation buck chopper power unit comprises controller 5, first power electric switch device V1 of full-control type and sustained diode, sustained diode two voltage supplied u, described controller 5 comprises digital microcontroller 3, tension measuring circuit 2, current measurement circuit 4, the isolated drive circuit 1 of the first device for power switching V1 and the second device for power switching V2, described braking circuit 7 is the circuit that the second device for power switching V2 and current-limiting resistance R2 connect, second device for power switching V2 respectively with one end of current-limiting resistance R2, isolated drive circuit 1 is connected, the other end of the second device for power switching V2 is connected with armature winding one end of series-wound motor M, first excitation winding L1 one end respectively, the other end of the first excitation winding L1 is connected with the positive terminal of one end of the first device for power switching V1, tension measuring circuit 2, sustained diode respectively, the other end of current-limiting resistance R2 is connected with other end armature winding one end of series-wound motor M, second excitation winding L2 one end more respectively through the Single port of current measurement circuit 4, the other end of the second excitation winding L2 is connected with the negative pole end of tension measuring circuit 2, sustained diode, uncontrollable rectifying part respectively behind the another port of current measurement circuit 4, tension measuring circuit 2, current measurement circuit 4 output are connected with digital microcontroller 3 respectively, the output of digital microcontroller 3 is connected with isolated drive circuit 1, first device for power switching V1 is connected with isolated drive circuit 1, uncontrollable rectifying part respectively.
Described uncontrollable rectifying part 6 comprises the first diode D1, the second diode D2, the 3rd diode D3 and the 4th diode D4, resistance R1 and electric capacity C, and the negative pole one termination AC power of the first diode D1 is also connected in positive pole one end of the 3rd diode D3; Negative pole one end of 3rd diode D3 is connected behind the another port of current measurement circuit 4 with negative pole one end of the 4th diode D4, negative pole one end of electric capacity C, the other end of the second excitation winding L2 respectively; The positive pole one termination AC power of the 4th diode D4 is also connected with negative pole one end of the second diode D2; Positive pole one end of first diode D1, positive pole one end of the second diode D2 are connected with one end of resistance R1 respectively; The other end of resistance R1 is connected with positive pole one end of electric capacity C, the first device for power switching V1 respectively.
As shown in Figure 2, the DC chopped-wave step-down voltage controller power source adopting pulse width modulation mode to control is that series-wound motor M powers, and during stopping brake, first controls the break-make point duty ratio of the first device for power switching V1; After the terminal voltage of motor being down to be less than or equal to brake voltage; Control conducting second device for power switching V2, connect the braking circuit of motor, realize braking; Record current i 2 nearly with the differential of i1 zero time, cut off the electricity supply, complete braking.
Embodiment:
If the chop control cycle of pulse-width modulation buck chopper power supply is Tp.The controller break-make point duty ratio of 3Tp time controling first device for power switching V1, namely and measure and confirm that the terminal voltage of motor is down to and be less than or equal to brake voltage; Controller Tp time conducting power switch second device for power switching V2, measures current i 2 and i1 afterwards, and calculates its difference within each Tp time; When record difference close to zero time, controller Tp time power cut.
The utility model need not exchange the connection end of excitation winding and armature winding when series-wound motor stopping brake, only control a power electronic switching and switch with regard to main circuit when realizing braking.
It should be noted last that, above embodiment is only unrestricted for illustration of the technical solution of the utility model, although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify to the technical solution of the utility model or equivalent replacement, and not departing from the spirit and scope of technical solutions of the utility model, it all should be encompassed in right of the present utility model.
Claims (2)
1. the brake control circuit of a series-wound motor, it is characterized in that, comprise series-wound motor (M), uncontrollable rectifying part (6), pulse-width modulation buck chopper power unit and braking circuit (7), described pulse-width modulation buck chopper power unit comprises controller (5), first power electric switch device (V1) of full-control type and fly-wheel diode (D), described controller (5) comprises digital microcontroller (3), tension measuring circuit (2), current measurement circuit (4), the isolated drive circuit (1) of the first device for power switching (V1) and the second device for power switching (V2), described braking circuit (7) is the circuit that the second device for power switching (V2) and current-limiting resistance (R2) are connected, second device for power switching (V2) respectively with one end of current-limiting resistance (R2), isolated drive circuit (1) is connected, the other end of the second device for power switching (V2) is connected with one end armature winding of series-wound motor (M), the first excitation winding (L1) one end respectively, the other end of the first excitation winding (L1) is connected with the positive terminal of one end of the first device for power switching (V1), tension measuring circuit (2), fly-wheel diode (D) respectively, the other end of current-limiting resistance (R2) is connected with the other end armature winding of series-wound motor (M), the second excitation winding (L2) one end more respectively through the Single port of current measurement circuit (4), the other end of the second excitation winding (L2) is connected with tension measuring circuit (2), the negative pole end of fly-wheel diode (D), uncontrollable rectifying part respectively behind the another port of current measurement circuit (4), tension measuring circuit (2), current measurement circuit (4) output are connected with digital microcontroller (3) respectively, the output of digital microcontroller (3) is connected with isolated drive circuit (1), first device for power switching (V1) is connected with isolated drive circuit (1), uncontrollable rectifying part respectively.
2. the brake control circuit of a kind of series-wound motor according to claim 1, it is characterized in that, described uncontrollable rectifying part (6) comprises the first diode (D1), the second diode (D2), the 3rd diode (D3) and the 4th diode (D4), resistance (R1) and electric capacity (C), and the negative pole one termination AC power of the first diode (D1) is also connected in positive pole one end of the 3rd diode (D3); Negative pole one end of 3rd diode (D3) is connected behind the another port of current measurement circuit (4) with negative pole one end of the 4th diode (D4), negative pole one end of electric capacity (C), the other end of the second excitation winding (L2) respectively; The positive pole one termination AC power of the 4th diode (D4) is also connected with negative pole one end of the second diode (D2); Positive pole one end of first diode (D1), positive pole one end of the second diode (D2) are connected with one end of resistance (R1) respectively; The other end of resistance (R1) is connected with positive pole one end of electric capacity (C), the first device for power switching (V1) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420436996.6U CN204334388U (en) | 2014-08-04 | 2014-08-04 | A kind of brake control circuit of series-wound motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420436996.6U CN204334388U (en) | 2014-08-04 | 2014-08-04 | A kind of brake control circuit of series-wound motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204334388U true CN204334388U (en) | 2015-05-13 |
Family
ID=53170696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420436996.6U Expired - Fee Related CN204334388U (en) | 2014-08-04 | 2014-08-04 | A kind of brake control circuit of series-wound motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204334388U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108141211A (en) * | 2015-10-13 | 2018-06-08 | 大陆泰密克微电子有限责任公司 | For making the method for at least one semiconductor switch operation and circuit device, for making the method for motor operation and current transformer |
| CN109716472A (en) * | 2016-09-23 | 2019-05-03 | 西门子股份公司 | The electronic device of switch driver for electric switch |
-
2014
- 2014-08-04 CN CN201420436996.6U patent/CN204334388U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108141211A (en) * | 2015-10-13 | 2018-06-08 | 大陆泰密克微电子有限责任公司 | For making the method for at least one semiconductor switch operation and circuit device, for making the method for motor operation and current transformer |
| CN109716472A (en) * | 2016-09-23 | 2019-05-03 | 西门子股份公司 | The electronic device of switch driver for electric switch |
| CN109716472B (en) * | 2016-09-23 | 2021-03-09 | 西门子股份公司 | Motor arrangement for a switch drive of an electrical switch |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204623178U (en) | The scooter electrical controller of a kind of solar power and the complementary accumulation of energy of super capacitor | |
| CN203750901U (en) | AC-DC (Alternating Current-Direct Current) dual-purpose cleaning machine | |
| CN201774307U (en) | Power supply circuit of motor of automobile | |
| CN204334388U (en) | A kind of brake control circuit of series-wound motor | |
| CN104201855B (en) | A kind of four phase switch reluctance motor torque ripple two level suppressing method | |
| CN203675030U (en) | AC servo driving system | |
| CN203072355U (en) | Intelligent energy-saving grass removing machine | |
| CN103826362B (en) | A kind of LED drive circuit and control method thereof | |
| CN203387448U (en) | Multipath soft-start system used for electric vehicle | |
| CN102447436B (en) | DC brushed motor self-locking control method and self-locking circuit thereof | |
| CN110221565A (en) | The aging feedback load control circuit and control method of pulse current working condition | |
| CN202495761U (en) | Capacitor constant power discharge circuit | |
| CN202309592U (en) | Variable-frequency type motor energy saving device | |
| CN203574576U (en) | Main circuit for inhibiting torque ripple of brushless direct current motor for electric automobile | |
| CN202475359U (en) | High voltage direct current high-power generator voltage regulator | |
| CN201860281U (en) | Self-locking circuit of DC brush motor | |
| CN202940764U (en) | Dual-drive brushless motor driving controller | |
| CN202001532U (en) | Uniform-speed braking control device used for series electromagnetic brake | |
| CN204334395U (en) | A kind of full-bridge direct current motor driver | |
| CN202940762U (en) | Dual-drive brushless electrical machine controller | |
| CN203014483U (en) | Fast switching power supply reused by silicon controlled rectifier and relay | |
| CN205406397U (en) | Direct current contactor's PWM drive circuit | |
| CN104816755A (en) | Power assisted steering system for dual-source trackless trolley | |
| CN204376791U (en) | A kind of field effect transistor full-bridge direct current motor driver | |
| CN205168209U (en) | Electric skateboard control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150513 Termination date: 20180804 |