CN203166827U - Special frequency converter for adjusting speed of battery electrical locomotive - Google Patents
Special frequency converter for adjusting speed of battery electrical locomotive Download PDFInfo
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- CN203166827U CN203166827U CN2013200881768U CN201320088176U CN203166827U CN 203166827 U CN203166827 U CN 203166827U CN 2013200881768 U CN2013200881768 U CN 2013200881768U CN 201320088176 U CN201320088176 U CN 201320088176U CN 203166827 U CN203166827 U CN 203166827U
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- motor
- frequency converter
- bipolar transistor
- current sensor
- controller
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Abstract
A special frequency converter for adjusting the speed of a battery electrical locomotive mainly solves the problems of the existing frequency converter that the output is not stable, the start is not smooth, and the energy consumption is relatively high. When the frequency converter receives a command from a driver controller, a fixed-point microcomputer controller (1) generates a three-phase pulse-width modulation signal by software control, and then an insulation grid bipolar transistor (3) is driven by an insulation grid bipolar transistor driving plate (2), so as to generate a three-phase pulse-width modulation voltage to drive an alternative voltage motor, the current of the motor is detected by a current sensor, the dynamic flux control and force moment current close-cycle control are performed through current vector transform, so as to generate a voltage space vector pulse-width modulation signal, realize the motor traction and feedback brake, and the reverse operation of the motor is realized in the software way, and the motor non-contact control is realized. When the overcurrent of the motor is detected by a protection circuit, and a hardware immediately locks a control signal, and the system is protected. The frequency converter is mainly used for an accumulator type industrial and mining electric locomotive.
Description
Technical field
The utility model relates to a kind of frequency converter, particularly a kind of accumulator loco motive speed governing special converter.
Background technology
At present, China's used battery locomotive on the colliery mostly adopts DC motor as traction motor, but the startup of direct-current electric locomotive and speed governing all will be in the loop series resistor, and because the actual needs of production process, electric locomotive will often be operated in the variable-speed operation state, therefore, a large amount of electric energy have slatterned at resistance with regard to consuming.In addition, DC motor is owing to have brush and the necessary running check maintenance of commutator, and commutation spark also is the gas environment that he is fit to the colliery, although the explosion-proof type direct-current electric locomotive can be adopted in the colliery, cost is too high.Also the someone studies the speed governing problem that solves the direct current drive locomotive with the method for controllable silicon chopper speed control a few years ago.Adopt the controllable silicon chopper speed control owing to be not activated resistance, so can save a part of electric energy.But because the technical performance of key element thyristor was poor at that time, conducting easily but can not turn-off voluntarily thereby out-of-control phenomenon can occur in speed regulation process, so this technology also fails to apply on battery locomotive.So the improvement of the mode of speed regulation of battery locomotive is very important.In view of alternating current motor is simpler, with low cost than dc motor structure, reliable operation, easy to maintenance, inertia is little, efficient is high, if battery locomotive made into to exchange to drag, obviously can bring many benefits.And along with development, particularly large scale integrated circuit and the computer-controlled appearance of power electronic technology, high-performance AC frequency converter timing system is arisen at the historic moment.Therefore can replace the DC motor of former usefulness on the battery locomotive with alternating current motor, and then adopt the method for frequency converter timing to carry out speed governing.
The utility model content
The purpose of this utility model provides a kind of contactless control; can by driver controller realize locomotive forward, backward, starting, traction, feedback electric braking; have perfect overcurrent, current limliting, overvoltage, under-voltage protection measure; can export specified 2 times of torques; start level and smooth non-jitter, energy-efficient accumulator loco motive speed governing special converter.
The technical scheme that its technical problem that solves the utility model adopts is: it comprises controller, current sensor, alternating current machine, it is characterized in that: controller connects microcomputerized controller 1, microcomputerized controller 1 and insulated gate bipolar transistor drive plate 2 link to each other by rectifier, insulated gate bipolar transistor drive plate 2 is provided with six or six above insulated gate bipolar transistors 3, insulated gate bipolar transistor 3 is connected with alternating current machine, alternating current machine is provided with current sensor, and current sensor links to each other with microcomputerized controller 1.
Microcomputerized controller 1 described in the utility model can adopt the TMS320LF2407A model.
Current sensor described in the utility model can adopt Hall current sensor.
Microcomputerized controller 1 described in the utility model is provided with and comprises and start stop key 4, just change reverse key 5, reset key 6, temperature switch 7, ready lamp 8, running indicator 9, alarm lamp 10, time-delay reset box 11, the given key 12 of speed and fan 13.
The beneficial effects of the utility model are: safeguard measure is perfect, and output is stable, starts level and smooth, energy-efficient.
Description of drawings
Fig. 1 is master control borad schematic diagram of the present utility model.
Fig. 2 is main electrical schematic schematic diagram of the present utility model.
Among the figure: the 1-microcomputerized controller, 2-insulated gate bipolar transistor drive plate, the 3-insulated gate bipolar transistor, 4-stop key, 5-are just changeing reverse key, 6-reset key, 7-temperature switch, 8-ready lamp, 9-running indicator.The 10-alarm lamp, 11-time-delay reset box, the given key of 12-speed, 13-fan.
Embodiment
Below in conjunction with drawings and Examples the utility model is described in further details.
Embodiment 1; the utility model comprises controller; current sensor; alternating current machine; it is characterized in that: controller connects microcomputerized controller 1; microcomputerized controller 1 and insulated gate bipolar transistor drive plate 2 link to each other by rectifier; insulated gate bipolar transistor drive plate 2 is provided with six or six above insulated gate bipolar transistors 3; insulated gate bipolar transistor 3 is connected with alternating current machine; alternating current machine is provided with current sensor; current sensor links to each other with microcomputerized controller 1; when receiving the controller instruction; microcomputerized controller 1 produces the three-phase pulse width modulated signal by software control; drive insulated gate bipolar transistor 3 through insulated gate bipolar transistor drive plate 2 again; produce three-phase pulse width modulated voltage and drive alternating current machine; pass through current sensor; detect current of electric; by the current phasor conversion; carry out dynamic flux regulator and torque current closed-loop adjustment; produce the space vector of voltage pulse-width signal; the traction of realization motor, regenerative braking realizes the motor inverted running by software mode simultaneously; thereby realize the contactless control of motor; when protective circuit detected over current of motor, hardware lockout control signal at once realized system protection.Consult Fig. 1 to Fig. 2.
Embodiment 2, microcomputerized controller 1 described in the utility model can adopt the TMS320LF2407A model, core algorithm is that the state-of-the-art DTC technology of present frequency converter industry and VVVF algorithm are combined, DTC and the VVVF core control technology better effects if more independent than common frequency converter.Read Fig. 1 to Fig. 2, all the other are with embodiment 1.
Claims (4)
1. accumulator loco motive speed governing special converter, it comprises controller, current sensor, alternating current machine, it is characterized in that: controller connects microcomputerized controller (1), microcomputerized controller (1) links to each other by rectifier with insulated gate bipolar transistor drive plate (2), insulated gate bipolar transistor drive plate (2) is provided with six or six above insulated gate bipolar transistors (3), insulated gate bipolar transistor (3) is connected with alternating current machine, alternating current machine is provided with current sensor, and current sensor links to each other with microcomputerized controller (1).
2. accumulator loco motive speed governing special converter according to claim 1, it is characterized in that: described microcomputerized controller (1) can adopt the TMS320LF2407A model.
3. accumulator loco motive speed governing special converter according to claim 1, it is characterized in that: described current sensor can adopt Hall current sensor.
4. accumulator loco motive speed governing special converter according to claim 1 is characterized in that: described microcomputerized controller (1) is provided with and comprises and start stop key (4), just change reverse key (5), reset key (6), temperature switch (7), ready lamp (8), running indicator (9), alarm lamp (10), time-delay reset box (11), the given key of speed (12) and fan (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200881768U CN203166827U (en) | 2013-02-27 | 2013-02-27 | Special frequency converter for adjusting speed of battery electrical locomotive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200881768U CN203166827U (en) | 2013-02-27 | 2013-02-27 | Special frequency converter for adjusting speed of battery electrical locomotive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203166827U true CN203166827U (en) | 2013-08-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013200881768U Expired - Fee Related CN203166827U (en) | 2013-02-27 | 2013-02-27 | Special frequency converter for adjusting speed of battery electrical locomotive |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203166827U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103178776A (en) * | 2013-02-27 | 2013-06-26 | 湘潭市电机车厂有限公司 | Frequency converter special for speed regulation of storage-battery electric locomotive |
-
2013
- 2013-02-27 CN CN2013200881768U patent/CN203166827U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103178776A (en) * | 2013-02-27 | 2013-06-26 | 湘潭市电机车厂有限公司 | Frequency converter special for speed regulation of storage-battery electric locomotive |
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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: 20130828 Termination date: 20200227 |