CN102307035A - Novel management and control system of mining lithium iron phosphate direct current series excitation chopping speed regulation electric locomotive - Google Patents
Novel management and control system of mining lithium iron phosphate direct current series excitation chopping speed regulation electric locomotive Download PDFInfo
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- CN102307035A CN102307035A CN201110264631A CN201110264631A CN102307035A CN 102307035 A CN102307035 A CN 102307035A CN 201110264631 A CN201110264631 A CN 201110264631A CN 201110264631 A CN201110264631 A CN 201110264631A CN 102307035 A CN102307035 A CN 102307035A
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Abstract
The invention discloses a novel management and control system of a mining lithium iron phosphate direct current series excitation chopping speed regulation electric locomotive, and the system comprises a battery pack management device, a chopping speed regulation control device of the direct current series excitation electric locomotive and a charger, which are connected with an explosion-proof bolt respectively. The chopping speed regulation control device of the direct current series excitation electric locomotive comprises a chopping controller, a photoelectric setter, a power supply conversion module, a temperature control switch, a Hall current sensor, an isolated gate bipolar transistor, a charging capacitor, five direct current contactors, a motor armature winding, a motor excitation winding and two pathes. The system has the advantages that control precision is high and service life of equipment is long.
Description
Technical field
The present invention relates to the mining electric locomotive control system.
Background technology
Mining electric locomotive is the industrial important transportation instrument in colliery, and the quantity of in the colliery, using is more and more, and is because the operational environment under the coal mine is very abominable, very high to the electrical drive system requirement of electric locomotive.Still there is the mode of serial-resistance speed-regulation in the electric locomotive of using at present, has more power conversion when adopting this mode and becomes the resistance heat to consume, and capacity usage ratio is not high; And electrokinetic cell all adopts lead-acid battery, and the cycle life of lead-acid battery is poor, the big heavy of volume; Plumbous and sulfuric acid all can contaminated environment; Charge cycle is long, and cost is increasing year by year, when motor is operated under the on-position; Can not the mechanical energy that motor itself is had be converted into the electric energy of electrokinetic cell, waste a part of energy.
Summary of the invention
The object of the present invention is to provide a kind of DC series chopping regulating speed electric locomotive managing and control system, have the control precision height, the advantage that service life of equipment is long.
The present invention to achieve these goals, the technical solution of employing is:
DC series chopping regulating speed electric locomotive managing and control system comprises the management device of battery pack, DC series electric locomotive chopping regulating speed control device and the charger that are connected respectively with the flame proof latch;
DC series electric locomotive chopping regulating speed control device comprises copped wave controller, photoelectricity control point adjustment, power conversion module, temperature detect switch (TDS), Hall current sensor, insulated gate bipolar transistor, charging capacitor, five D.C. contactors, armature winding, motor excitation winding and two paths; Photoelectricity control point adjustment, voltage transformation module are connected with the copped wave controller respectively, and the coil of the coil of the coil of first D.C. contactor, second D.C. contactor, the coil of the 3rd D.C. contactor, the 4th D.C. contactor is connected with the copped wave controller respectively; The normally-closed contact of the 4th D.C. contactor is connected between two paths, and the collector and emitter of insulated gate bipolar transistor is connected with two paths respectively, and grid is connected with the copped wave controller; The normally opened contact of first D.C. contactor and normally-closed contact series connection; The normally opened contact of second D.C. contactor and normally-closed contact series connection; The common port of normally opened contact and normally-closed contact is connected the armature winding; Two normally-closed contacts also connect the motor excitation winding that the back connects two series connection, connect the collector electrode of insulated gate bipolar transistor afterwards; The common point of the motor excitation winding of two series connection connects and connects alternate path after often opening of the 3rd D.C. contactor got an electric shock; Hall current sensor one terminates between the collector electrode of motor excitation winding and insulated gate bipolar transistor, and the other end is connected with the copped wave processor; Charging capacitor is connected on the collector electrode of insulated gate bipolar transistor; The normally opened contact of the normally opened contact of the 4th D.C. contactor and the 5th D.C. contactor is connected on first path; The coil of the 5th D.C. contactor is connected between two paths.
Further, said management device of battery pack comprises battery management processor, display, blow-out contactor, ferric phosphate lithium cell group, and the battery management processor is connected with display, and the coil of blow-out contactor is connected with the battery management processor; After the ferric phosphate lithium cell group forms a branch road by N joint ferric phosphate lithium cell series connection back; Again that the M bar is same branch road is formed in parallel; The ferric phosphate lithium cell group is connected with the flame proof latch after connecting the normally opened contact of blow-out contactor, and every joint ferric phosphate lithium cell is furnished with the battery control board; Integrated voltage detecting circuit, temperature sensing circuit, voltage balance circuit on the battery control board; Each battery control board is connected with the battery management processor after connecting through bus, is connected with the insulated gate bipolar transistor npn npn on every ferric phosphate lithium cell series arm; All there are two paths that comprise the CMOS pipe at the two ends of every joint ferric phosphate lithium cell, and the end that is in the path that comprises the CMOS pipe on same the ferric phosphate lithium cell series arm is connected.
Beneficial effect of the present invention:
Direct current machine adopts the series excitation mode to connect, armature winding, motor excitation windings in series together, starting characteristic is soft, moment is big.First D.C. contactor and second D.C. contactor are used for changing armature winding sense of current; Thereby change the rotating of motor; During the electric locomotive high-ball; The 3rd D.C. contactor can be with excitation winding C2 and insulated gate bipolar transistor short circuit, thereby reduces the heat loss of insulated gate bipolar transistor, improves its useful life.
The electro-magnetic braking functions of DC series motor, when downslope motion, electric locomotive is operated in on-position, and D.C. series motor becomes DC generator, and the electric energy that gravitional force converts to is recharged in the ferric phosphate lithium cell group.
The battery management processor, overtension, brownout, the temperature that detects battery is too high, during the electric current overload, and the battery management system processor is all with automatic disconnection blow-out contactor, the protection battery pack.
Description of drawings
Fig. 1 is the circuit diagram of DC series electric locomotive chopping regulating speed control device.
Fig. 2 is the circuit diagram of management device of battery pack.
Fig. 3 is the circuit diagram of a ferric phosphate lithium cell series arm.
Embodiment
Below in conjunction with Fig. 1 to Fig. 3 the present invention is elaborated:
DC series chopping regulating speed electric locomotive managing and control system comprises the management device of battery pack, DC series electric locomotive chopping regulating speed control device and the charger that are connected respectively with the flame proof latch.
DC series electric locomotive chopping regulating speed control device comprises copped wave controller, photoelectricity control point adjustment, power conversion module, temperature detect switch (TDS) 1, Hall current sensor 2, insulated gate bipolar transistor 3, charging capacitor 4, five D.C. contactor KM1, KM2, KM3, KMV, KMP, armature winding S1, motor excitation winding C1, C2 and two paths 5,6.Photoelectricity control point adjustment, voltage transformation module are connected with the copped wave controller respectively; The coil of the coil of the coil of the coil of the first D.C. contactor KM1, the second D.C. contactor KM2, the 3rd D.C. contactor KM3, the 4th D.C. contactor KMV is connected with the copped wave controller respectively; The normally-closed contact of the 4th D.C. contactor KMV is connected two paths 5, between 6; The collector and emitter of insulated gate bipolar transistor 3 is connected with two paths 5,6 respectively, and grid is connected with the copped wave controller.The normally opened contact of the first D.C. contactor KM1 and normally-closed contact series connection; The normally opened contact of the second D.C. contactor KM2 and normally-closed contact series connection; The common port of normally opened contact and normally-closed contact is connected armature winding S1; Two normally-closed contacts also meet motor excitation winding C1, the C2 that the back connects two series connection, connect the collector electrode of insulated gate bipolar transistor 3 afterwards.The motor excitation winding C1 of two series connection, the common point of C2 connect and connect alternate path 6 after often opening of the 3rd D.C. contactor KM3 got an electric shock; Hall current sensor 2 one terminates between the collector electrode of motor excitation winding C2 and insulated gate bipolar transistor 3, and the other end is connected with the copped wave processor.Charging capacitor 4 is connected on the collector electrode of insulated gate bipolar transistor 3; The normally opened contact of the normally opened contact of the 4th D.C. contactor KMV and the 5th D.C. contactor KMP is connected on first path 5, and the coil of the 5th D.C. contactor KMP is connected on two paths 5, between 6.
Management device of battery pack comprises battery management processor, display, blow-out contactor KM, ferric phosphate lithium cell group, and the battery management processor is connected with display, and the coil of blow-out contactor KM is connected with the battery management processor.After the ferric phosphate lithium cell group forms a branch road by N joint ferric phosphate lithium cell series connection back; Again that the M bar is same branch road is formed in parallel; The ferric phosphate lithium cell group is connected with the flame proof latch after connecting the normally opened contact of blow-out contactor KM, and every joint ferric phosphate lithium cell is furnished with the battery control board; Integrated voltage detecting circuit, temperature sensing circuit, voltage balance circuit on the battery control board; Each battery control board is connected with the battery management processor after connecting through bus 7, is connected with insulated gate bipolar transistor npn npn 8 on every ferric phosphate lithium cell series arm; All there are two paths that comprise the CMOS pipe at the two ends of every joint ferric phosphate lithium cell, and the end that is in the path that comprises the CMOS pipe on same the ferric phosphate lithium cell series arm is connected.
The electric locomotive of direct current chopping regulating speed of the present invention no longer adopts resistance box to come the resistance value that is connected in series on the switch motor excitation winding; But realize variable voltage control through the control of cutting of insulated gate bipolar transistor, insulated gate bipolar transistor under the effect that drives pwm signal, break-make ceaselessly; The longer effective voltage that motor is applied of insulated gate bipolar transistor ON time is high more; The speed that electric locomotive goes is fast more, otherwise the speed that electric locomotive goes is slow more.
The main feature of DC series electric locomotive chopping regulating speed control device:
1) direct current machine adopts the series excitation mode to connect, and armature winding S1 excitation winding C1 C2 is cascaded, and starting characteristic is soft, and moment is big.Contactor KM1 and KM2 are used for changing the armature winding sense of current; Thereby change the rotating of motor; During the electric locomotive high-ball; Contactor KM3 can be with excitation winding C2 and insulated gate bipolar transistor short circuit, thereby reduces the heat loss of insulated gate bipolar transistor, and improves its useful life.
Under the different phase, the state of each device is:
Electric locomotive is boost phase to overtake: KMP KMV KM1 adhesive, all the other contactors break off, insulated gate bipolar transistor copped wave control.
Electric locomotive is the full speed stage to overtake: KMP KMV KM1KM3 adhesive, and all the other contactors break off, and insulated gate bipolar transistor quits work.
The electric locomotive boost phase that goes backward: KMP KMV KM2 adhesive, all the other contactors break off, insulated gate bipolar transistor copped wave control.
Electric locomotive goes the stage at full speed backward: KMP KMV KM2KM3 adhesive, and all the other contactors break off, and insulated gate bipolar transistor quits work.
2) with the simplest structure, realized the electro-magnetic braking functions of DC series motor, when downslope motion, electric locomotive is operated in on-position, and D.C. series motor becomes DC generator, and the electric energy that gravitional force converts to is recharged in the ferric phosphate lithium cell group.Under the different phase, the state of each device is:
Electric locomotive is the deboost phase forward: KMP KM2 adhesive, all the other contactors break off, insulated gate bipolar transistor copped wave control.
Electric locomotive is the deboost phase backward: KMP KM1 adhesive, all the other contactors break off, insulated gate bipolar transistor copped wave control.
Behind the copped wave control boosted voltage,,, thereby prolonged the service time of power battery pack to the charging of ferric phosphate lithium cell group through behind stream diode, buffer capacitor, KMP contacts of contactor, gas cutoff instrument, flame proof latch.
3) after the adhesive of contactor KMP KMV KM1 or KM2 elder generation, increase the voltage at motor two ends more gradually by insulated gate bipolar transistor, so contactor KMP KMV KM1KM2 is no arc switching, the non-contact loss, useful life lengthening.Contactor KM3 can produce fiery arc in the moment of adhesive, and therefore requiring KM3 is closed type blow-out contactor.Contactor KMP can prevent the external battery pack reversal connection, and no-voltage in the copped wave control cabinet also provides path for feedback circuit simultaneously during reversal connection.
4) adopt the modular construction design, the flame proof latch can directly link to each other with electrical source of power, and the Hall current sensor and the photoelectricity control point adjustment linearity are high; Good stability; Adopt closed-loop control system, after Hall current sensor detects over current of motor or the overheated action of temperature detect switch (TDS), the copped wave controller all will block insulated gate bipolar transistor copped wave output; Thereby protected motor and insulated gate bipolar transistor, reduced the failure rate of electric equipment.In the high environment of coal mine gas concentration, system can cut off the power supply automatically, prevents that blast from taking place, and meets the safety regulations in coal mine requirement.
5) photoelectricity control point adjustment output 0 to 4V analog voltage signal, when the electric locomotive driver turned right the operation handle, it was closed to drive travel switch; Pivot angle according to the operation handle; Photoelectricity control point adjustment output corresponding simulating voltage, when the electric locomotive driver turned left the operation handle, it was closed to drive brake switch; According to the pivot angle of operation handle, photoelectricity control point adjustment output corresponding simulating voltage.The copped wave controller is regulated the duty ratio that insulated gate bipolar transistor drives pwm signal again according to the given voltage of photoelectricity control point adjustment, and driver operation handle pivot angle is big more, and given aanalogvoltage is high more, and the duty ratio of pwm signal is high more, and electric locomotive speed is fast more.
6) possess complete sequential logic protection, abnormal operation as changing motor steering in the electric locomotive driving process, is all forbidden response by the copped wave controller.
The main feature of management device of battery pack:
1) ferric phosphate lithium cell is in the connection in series-parallel anabolic process, if the parallel connection of first m joint is connected the group of the n after the parallel connection again; Although can simplify the structure of battery management system, reduce its cost, be difficult to realize detection adjusting to the cell electric current; 1 batteries fault, the cell charging and discharging currents that then should organize in residue m-1 joint cell charging and discharging currents and all the other n-1 group equates that no longer accumulation can cause the deterioration of whole battery group performance when long; Therefore adopted first series connection n batteries; The compound mode of parallelly connected then m branch road is 3.2V according to the voltage of LiFePO4 cell, and it is 100Ah that the colliery limits the monomer heap(ed) capacity; Then the voltage of battery pack is 3.2*n after the connection in series-parallel, and heap(ed) capacity is 100*m Ah.
2) every joint ferric phosphate lithium cell is equipped with 1 battery control board; Integrated voltage detecting circuit, temperature sensing circuit and balancing performance circuit on each battery control board; All embedded battery control boards are through 4 core CAN buses; Be connected to the battery management system processor, on the branch road of every series connection, also have 1 Hall current sensor, also be connected to the battery management system processor; During, electric current overload too high when the overtension that detects battery, brownout, temperature, the battery management system processor is all with automatic disconnection blow-out contactor KM.
3) the embedded battery control board has electric voltage equalization and current balance function; All there are 2 paths that comprise the CMOS pipe at arbitrary batteries two ends; And electric voltage equalization is continual always the adjusting, and because of the cell pressure drop is 3.2V, euqalizing current is less than 1A; So adopt CMOS pipe low-cost, voltage-controlled type to serve as electronic switch, the control signal Q that produces by the embedded battery control board respectively
V1Q
V2Q
V3Q
V4Q
V (2n-1)Q
V (2n)Control these electronic switches, carry out electric voltage equalization and regulate.For preventing that battery discharge current is different on the different branch; And discharging current can reach amperes up to a hundred; So on every branch road, be connected in series 1 insulated gate bipolar transistor, although the price of insulated gate bipolar transistor is high slightly, the quantity of parallel branch generally can be above 6 in a connection in series-parallel battery pack; The compare price of LiFePO4, the cost of battery management system is very low.
At the electric locomotive duration of work, control Q
V1Q
V2Q
V3Q
V4Q
V (2n-1)Q
V (2n)Signal; All electric voltage equalization cmos switches are broken off, guaranteed the lasting noiseless of battery discharge, and in electric locomotive section standby time; Voltage energy shifts and controlled by the embedded battery control board; Between each embedded battery control board,, controlled by the battery management system processor through 4 core CAN buses.The transfer of voltage energy can only be carried out between two adjacent batteries, and promptly the r batteries is if shifting energy demand to the t batteries shifts r-t time, as long as adjacent two batteries electric voltage equalizations, then any two batteries voltages also are balanced in the whole battery group.
In Fig. 3, be example with the n# battery to the 1# battery, the process that energy shifts is described:
1. Q
V4Q
V (2n)Effectively, the n# battery discharge stores energy in the inductance capacitance device.
2. Q
V (2n)Invalid, Q
V3Effectively, inductance produces induced electromotive force to the 2# battery charge, and energy stored is transferred to battery.
3. Q
V2Q
V (2n-1)Effectively, the 2# battery discharge stores energy in the inductance capacitance device.
4. Q
V (2n-1)Invalid, Q
V1Effectively, inductance produces induced electromotive force to the 1# battery charge, and energy stored is transferred to battery.
Branch current is regulated and controlled by the battery management system processor; Under the situation that band carries; The size of branch current is regulated through closed-loop control system automatically; Carry out signal feedback through the electric current on the Hall current sensor detection branch, when electric current is bigger than normal, produce the Q of low duty ratio by the battery management system processor
ImThe current balance signal reduces the electric current on this branch road; Otherwise, when electric current is less than normal, produce the current balance signal of high duty ratio.During overheated or fault, then break off the response branch road at battery, and on display display alarm information, remind and in time change or the maintenance battery.
4) in order to reduce the electric locomotive circuitry consumes that external circuit continues when idle, increase by 1 mains switch in the system service time of further improving battery, had only after the mains switch closure, could pass through flame proof latch output/input voltage.
5) if the flame proof latch is connected to the copped wave control cabinet, then the ferric phosphate lithium cell group is in power supply state, and the electric energy of storage changes the kinetic energy of electric locomotive into; If the flame proof latch is connected to charger, then the ferric phosphate lithium cell group is in charged state, and charging begins to adopt constant current charge; Big electric current when preventing low pressure; Later stage in charging is adopted constant voltage charge, prevents that charged battery voltage is too high, and outside like this electric energy just changes the electric energy in the battery into.
6) display adopts the TFT LCD, and circulation shows the voltage and the temperature of every batteries, the total voltage of battery pack and mean temperature, the charging and discharging currents of every branch road; And total charging and discharging currents of battery pack, if fail battery is arranged, then show the fail battery numbering, prompting changing; If overtension, too high, the electric current overload warning of temperature are arranged, then show corresponding warning message, the convenient processing; If brownout is arranged, then show corresponding warning message, remind charging in time.
Certainly, above-mentioned explanation is not to be limitation of the present invention, and the present invention also is not limited in above-mentioned giving an example, and variation, remodeling, interpolation or replacement that the technical staff in present technique field is made in essential scope of the present invention also should belong to protection scope of the present invention.
Claims (2)
1. DC series chopping regulating speed electric locomotive managing and control system is characterized in that: comprise the management device of battery pack, DC series electric locomotive chopping regulating speed control device and the charger that are connected respectively with the flame proof latch;
DC series electric locomotive chopping regulating speed control device comprises copped wave controller, photoelectricity control point adjustment, power conversion module, temperature detect switch (TDS), Hall current sensor, insulated gate bipolar transistor, charging capacitor, five D.C. contactors, armature winding, motor excitation winding and two paths; Photoelectricity control point adjustment, voltage transformation module are connected with the copped wave controller respectively, and the coil of the coil of the coil of first D.C. contactor, second D.C. contactor, the coil of the 3rd D.C. contactor, the 4th D.C. contactor is connected with the copped wave controller respectively; The normally-closed contact of the 4th D.C. contactor is connected between two paths, and the collector and emitter of insulated gate bipolar transistor is connected with two paths respectively, and grid is connected with the copped wave controller; The normally opened contact of first D.C. contactor and normally-closed contact series connection; The normally opened contact of second D.C. contactor and normally-closed contact series connection; The common port of normally opened contact and normally-closed contact is connected the armature winding; Two normally-closed contacts also connect the motor excitation winding that the back connects two series connection, connect the collector electrode of insulated gate bipolar transistor afterwards; The common point of the motor excitation winding of two series connection connects and connects alternate path after often opening of the 3rd D.C. contactor got an electric shock; Hall current sensor one terminates between the collector electrode of motor excitation winding and insulated gate bipolar transistor, and the other end is connected with the copped wave processor; Charging capacitor is connected on the collector electrode of insulated gate bipolar transistor; The normally opened contact of the normally opened contact of the 4th D.C. contactor and the 5th D.C. contactor is connected on first path; The coil of the 5th D.C. contactor is connected between two paths.
2. DC series chopping regulating speed electric locomotive managing and control system according to claim 1; It is characterized in that: said management device of battery pack; Comprise battery management processor, display, blow-out contactor, ferric phosphate lithium cell group; The battery management processor is connected with display, and the coil of blow-out contactor is connected with the battery management processor; After the ferric phosphate lithium cell group forms a branch road by N joint ferric phosphate lithium cell series connection back; Again that the M bar is same branch road is formed in parallel; The ferric phosphate lithium cell group is connected with the flame proof latch after connecting the normally opened contact of blow-out contactor, and every joint ferric phosphate lithium cell is furnished with the battery control board; Integrated voltage detecting circuit, temperature sensing circuit, voltage balance circuit on the battery control board; Each battery control board is connected with the battery management processor after connecting through bus, is connected with the insulated gate bipolar transistor npn npn on every ferric phosphate lithium cell series arm; All there are two paths that comprise the CMOS pipe at the two ends of every joint ferric phosphate lithium cell, and the end that is in the path that comprises the CMOS pipe on same the ferric phosphate lithium cell series arm is connected.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110264631.0A CN102307035B (en) | 2011-09-08 | 2011-09-08 | Novel management and control system of mining lithium iron phosphate direct current series excitation chopping speed regulation electric locomotive |
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| CN201110264631.0A CN102307035B (en) | 2011-09-08 | 2011-09-08 | Novel management and control system of mining lithium iron phosphate direct current series excitation chopping speed regulation electric locomotive |
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| CN103326644B (en) * | 2013-07-04 | 2015-11-25 | 丽水学院 | A kind of control method of series-wound motor speed-adjusting driving system |
| CN111451627A (en) * | 2020-04-13 | 2020-07-28 | 中国电子科技集团公司第十八研究所 | Electrode polarity reversing device for parallel resistance welding |
| CN113541296A (en) * | 2021-05-31 | 2021-10-22 | 华电电力科学研究院有限公司 | Explosion-proof mining 5G online backup power supply |
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| CN102307035B (en) | 2014-06-18 |
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