CN107786079A - One kind power supply main circuit control method - Google Patents
One kind power supply main circuit control method Download PDFInfo
- Publication number
- CN107786079A CN107786079A CN201610724014.7A CN201610724014A CN107786079A CN 107786079 A CN107786079 A CN 107786079A CN 201610724014 A CN201610724014 A CN 201610724014A CN 107786079 A CN107786079 A CN 107786079A
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- CN
- China
- Prior art keywords
- contactor
- power supply
- train load
- voltage
- main circuit
- 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.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
- H02M1/34—Snubber circuits
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The present invention discloses a kind of power supply main circuit control method, including：The charging contactor KM1 of precharge unit is closed, Support Capacitor Cd is started to charge up；After Support Capacitor Cd voltage reaches preset voltage value, the short circuit contactor KM2 of precharge unit is closed, charging contactor KM1 disconnects afterwards；Close output contactor KM4, four-quadrant rectification module carries out uncontrollable rectification, output direct current 370V ~ 400V voltage to train load；Start four-quadrant rectification module, rectification output direct current 600V voltages, complete train load power supply process.In the present invention before not actuated four-quadrant rectification module, carry out uncontrollable rectification and export DC voltage 370V ~ 400V to train load, rectification exports direct current 600V to train load after starting four-quadrant rectification module, compared to existing main circuit control method, load shock reduces more than 30%, iron target voltage build-up rate requirement preferably is approached, avoids the generation of output overvoltage failure, improves reliability of the row for cabinet.
Description
Technical field
The present invention relates to power supply system of train field, more particularly, to one kind power supply main circuit control method.
Background technology
Power supply system of train is mainly used in the power supply of railway transport of passengers train.As shown in figure 1, inputted power network by locomotive
AC rectification provides to each compartment of passenger train DC600V direct current supply voltage into direct current, and each compartment is straight by this again
Stream voltage is transformed into required electrical energy form, so as to drive train load.
Existing row for cabinet main circuit control sequential are：Close charging contactor → closure short circuit contactor → startup four-quadrant
Rectification module → closure output contactor, its detailed process such as Fig. 2.This main circuit control method can cause four-quadrant rectification mould
For the direct current 600V voltages impact of block output in load, the impact to load is very big, and to four-quadrant under full load conditions
Control brings very big challenge, and over-voltage fault easily occurs, and can equally cause to load both ends electricity during passenger train load excision
The too fast decline of pressure and electric current, impact is produced to load.
The content of the invention
The defects of present invention is overcomes big to load shock described in above-mentioned prior art, there is provided one kind power supply main circuit control
Method processed, avoids load voltage from sharp rising to 600V, reduces the voltage current impact to load.
In order to solve the above technical problems, technical scheme is as follows：
Alternating current is converted into direct current by one kind power supply main circuit control method, the power supply main circuit by four-quadrant rectification module
Electricity is simultaneously output to train load, and a precharge unit is also in series between four-quadrant rectification module and AC power, and precharge is single
Member includes charging contactor KM1, charging resistor R1, short circuit contactor KM2, after charging contactor KM1 connects with charging resistor R1
It is in parallel with short circuit contactor KM2, Support Capacitor Cd is also parallel between four-quadrant rectification module and train load and output contacts
Device, it the described method comprises the following steps：
S1：The charging contactor KM1 of precharge unit is closed, Support Capacitor Cd is started to charge up；
S2：After Support Capacitor Cd voltage reaches preset voltage value, the short circuit contactor KM2 of precharge unit is closed, afterwards
Charging contactor KM1 disconnects；
S3：Output contactor KM4 is closed, four-quadrant rectification module carries out uncontrollable rectification, output direct current 370V ~ 400V voltage
To train load；
S4：Start four-quadrant rectification module, rectification output direct current 600V voltages, complete train load power supply process.
In a kind of preferable scheme, in step S2, after the short circuit contactor KM2 for closing precharge unit, by delay
Charging contactor KM1 trippings after time T, wherein, 0.5s<T<2s.
In a kind of preferable scheme, described delay time T is 1s.
In a kind of preferable scheme, in step S2, described preset voltage value is 380V ~ 420V.
In a kind of preferable scheme, in step S3, four-quadrant rectification module carries out uncontrollable rectification, output direct current 400V
Voltage to train load.
In a kind of preferable scheme, methods described also includes the process for disconnecting train load power supply, concretely comprises the following steps：
S5：Four-quadrant rectification module is closed, four-quadrant rectification module carries out uncontrollable rectification, output direct current 370V ~ 400V electricity
Train load is pressed onto, the voltage of train load is dropped to 370V ~ 400V from 600V；
S6：Short circuit contactor KM2 and output contactor KM4 is disconnected, the voltage of train load is reduced to 0 from 370V ~ 400V.
During train load power supply is disconnected, the voltage of train load dropped to 370V ~ 400V from 600V before this, afterwards
0 is reduced to from 370V ~ 400V again, the too fast decline of train load both end voltage and electric current is avoided, reduces the impact to load.
Compared with prior art, the beneficial effect of technical solution of the present invention is：The present invention discloses a kind of power supply main circuit control
Method processed, closes the charging contactor KM1 of precharge unit, and Support Capacitor Cd is started to charge up；When Support Capacitor Cd voltage reaches
To after preset voltage value, the short circuit contactor KM2 of precharge unit is closed, charging contactor KM1 disconnects afterwards；Closure output connects
Tentaculum KM4, four-quadrant rectification module carry out uncontrollable rectification, output direct current 370V ~ 400V voltage to train load；Start four
Quadrant rectification module, rectification output direct current 600V voltages, completes train load power supply process.In not actuated four-quadrant in the present invention
Before rectification module, carry out uncontrollable rectification output DC voltage 370V ~ 400V and arrive train load, after startup four-quadrant rectification module
Rectification exports direct current 600V to train load, and compared to existing main circuit control method, load shock reduces more than 30%, more
The good generation for approaching iron target voltage build-up rate requirement, avoiding output overvoltage failure, improve reliability of the row for cabinet.
Brief description of the drawings
Fig. 1 is the circuit diagram of power supply main circuit.
Fig. 2 is the flow chart of existing power supply main circuit control method.
Fig. 3 is the flow chart of present invention power supply main circuit control method.
Embodiment
Accompanying drawing being given for example only property explanation, it is impossible to be interpreted as the limitation to this patent；
In order to more preferably illustrate the present embodiment, some parts of accompanying drawing have omission, zoomed in or out, and do not represent the chi of actual product
It is very little；
To those skilled in the art, some known features and its explanation may be omitted and will be understood by accompanying drawing.
Technical scheme is described further with reference to the accompanying drawings and examples.
Embodiment 1
As shown in figure 3, a kind of power supply main circuit control method, alternating current is passed through four-quadrant rectification module by the power supply main circuit
It is converted into direct current and is output to train load, a precharge list is also in series between four-quadrant rectification module and AC power
Member, precharge unit include charging contactor KM1, charging resistor R1, short circuit contactor KM2, charging contactor KM1 and charging electricity
It is in parallel with short circuit contactor KM2 after resistance R1 series connection, Support Capacitor Cd is also parallel between four-quadrant rectification module and train load
And output contactor, it the described method comprises the following steps：
S1：The charging contactor KM1 of precharge unit is closed, Support Capacitor Cd is started to charge up.
S2：After Support Capacitor Cd voltage reaches preset voltage value, the short circuit contactor KM2 of precharge unit is closed,
After 1s, charging contactor KM1 disconnects；
In specific implementation process, described preset voltage value is 380V ~ 420V.
S3：Output contactor KM4 is closed, four-quadrant rectification module carries out uncontrollable rectification, output direct current 370V ~ 400V's
Voltage is to train load.
In specific implementation process, four-quadrant rectification module carries out uncontrollable rectification, and output direct current 400V voltage is to arranging
Car loads.
S4：Start four-quadrant rectification module, rectification output direct current 600V voltages, complete train load power supply process.
The present invention carries out uncontrollable rectification output DC voltage 370V ~ 400V and arrived before not actuated four-quadrant rectification module
Train load, rectification output direct current 600V controls to train load compared to existing main circuit after starting four-quadrant rectification module
Method, load shock reduce more than 30%, preferably approach iron target voltage build-up rate requirement, avoid output overvoltage failure
Occur, improve reliability of the row for cabinet.
In specific implementation process, methods described also includes the process for disconnecting train load power supply, concretely comprises the following steps：
S5：Four-quadrant rectification module is closed, four-quadrant rectification module carries out uncontrollable rectification, output direct current 370V ~ 400V electricity
Train load is pressed onto, the voltage of train load is dropped to 370V ~ 400V from 600V；
S6：Short circuit contactor KM2 and output contactor KM4 is disconnected, the voltage of train load is reduced to 0 from 370V ~ 400V.
The present invention during train load power supply is disconnected, the voltage of train load before this from 600V drop to 370V ~
400V, 0 is reduced to from 370V ~ 400V again afterwards, avoids the too fast decline of train load both end voltage and electric current, reduce to load
Impact.
Same or analogous label corresponds to same or analogous part；
Term the being given for example only property explanation of position relationship described in accompanying drawing, it is impossible to be interpreted as the limitation to this patent；
Obviously, the above embodiment of the present invention is only intended to clearly illustrate example of the present invention, and is not to this hair
The restriction of bright embodiment.For those of ordinary skill in the field, can also do on the basis of the above description
Go out other various forms of changes or variation.There is no necessity and possibility to exhaust all the enbodiments.It is all in the present invention
Spirit and principle within all any modification, equivalent and improvement made etc., should be included in the guarantor of the claims in the present invention
Within the scope of shield.
Claims (8)
1. one kind power supply main circuit control method, alternating current is converted into directly by the power supply main circuit by four-quadrant rectification module
Stream electricity is simultaneously output to train load, and a precharge unit is also in series between four-quadrant rectification module and AC power, described pre-
Charhing unit includes charging contactor KM1, charging resistor R1, short circuit contactor KM2, charging contactor KM1 and charging resistor R1
It is in parallel with short circuit contactor KM2 after series connection, Support Capacitor Cd and defeated is also parallel between four-quadrant rectification module and train load
Go out contactor, it is characterised in that the power supply main circuit control method comprises the following steps：
S1：The charging contactor KM1 of precharge unit is closed, Support Capacitor Cd is started to charge up；
S2：After Support Capacitor Cd voltage reaches preset voltage value, the short circuit contactor KM2 of precharge unit is closed, afterwards
Charging contactor KM1 disconnects；
S3：Output contactor KM4 is closed, four-quadrant rectification module carries out uncontrollable rectification, output direct current 370V ~ 400V voltage
To train load；
S4：Start four-quadrant rectification module, rectification output direct current 600V voltages, complete train load power supply process.
2. power supply main circuit control method according to claim 1, it is characterised in that in step S2, closure precharge is single
After the short circuit contactor KM2 of member, the charging contactor KM1 trippings after delay time T, wherein, 0.5s<T<2s.
3. power supply main circuit control method according to claim 2, it is characterised in that described delay time T is 1s.
4. according to any described power supply main circuit control methods of claim 1-3, it is characterised in that described in step S2
Preset voltage value is 380V ~ 420V.
5. the power supply main circuit control method according to claim 1-3, it is characterised in that in step S3, four-quadrant rectification
Module carries out uncontrollable rectification, output direct current 400V voltage to train load.
6. power supply main circuit control method according to claim 4, it is characterised in that in step S3, four-quadrant rectification mould
Block carries out uncontrollable rectification, output direct current 400V voltage to train load.
7. according to any described power supply main circuit control method of claim 1 or 2, it is characterised in that methods described also includes
The process of train load power supply is disconnected, is concretely comprised the following steps：
S5：Four-quadrant rectification module is closed, four-quadrant rectification module carries out uncontrollable rectification, output direct current 370V ~ 400V electricity
Train load is pressed onto, the voltage of train load is dropped to 370V ~ 400V from 600V；
S6：Short circuit contactor KM2 and output contactor KM4 is disconnected, the voltage of train load is reduced to 0 from 370V ~ 400V.
8. power supply main circuit control method according to claim 3, it is characterised in that methods described also includes disconnecting train
The process of load supplying, is concretely comprised the following steps：
S5：Four-quadrant rectification module is closed, four-quadrant rectification module carries out uncontrollable rectification, output direct current 370V ~ 400V electricity
Train load is pressed onto, the voltage of train load is dropped to 370V ~ 400V from 600V；
S6：Short circuit contactor KM2 and output contactor KM4 is disconnected, the voltage of train load is reduced to 0 from 370V ~ 400V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610724014.7A CN107786079B (en) | 2016-08-26 | 2016-08-26 | A kind of power supply main circuit control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610724014.7A CN107786079B (en) | 2016-08-26 | 2016-08-26 | A kind of power supply main circuit control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107786079A true CN107786079A (en) | 2018-03-09 |
| CN107786079B CN107786079B (en) | 2019-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610724014.7A Active CN107786079B (en) | 2016-08-26 | 2016-08-26 | A kind of power supply main circuit control method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110875609A (en) * | 2018-08-30 | 2020-03-10 | 株洲中车时代电气股份有限公司 | Vehicle-mounted charger and dead load control method thereof |
| CN111092418A (en) * | 2019-12-31 | 2020-05-01 | 珠海格力电器股份有限公司 | Direct current power supply loop, voltage fluctuation processing method and device thereof, and controller |
| CN111775972A (en) * | 2020-06-21 | 2020-10-16 | 中车永济电机有限公司 | High-reliability locomotive electric transmission system and control method thereof |
| CN111775973A (en) * | 2020-06-21 | 2020-10-16 | 中车永济电机有限公司 | Locomotive power supply system and control method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104993686A (en) * | 2015-07-22 | 2015-10-21 | 华中科技大学 | Method for starting single-phase rectifier based on modular multilevel converter |
-
2016
- 2016-08-26 CN CN201610724014.7A patent/CN107786079B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104993686A (en) * | 2015-07-22 | 2015-10-21 | 华中科技大学 | Method for starting single-phase rectifier based on modular multilevel converter |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110875609A (en) * | 2018-08-30 | 2020-03-10 | 株洲中车时代电气股份有限公司 | Vehicle-mounted charger and dead load control method thereof |
| CN110875609B (en) * | 2018-08-30 | 2023-04-14 | 株洲中车时代电气股份有限公司 | Vehicle-mounted charger and dead load control method thereof |
| CN111092418A (en) * | 2019-12-31 | 2020-05-01 | 珠海格力电器股份有限公司 | Direct current power supply loop, voltage fluctuation processing method and device thereof, and controller |
| CN111775972A (en) * | 2020-06-21 | 2020-10-16 | 中车永济电机有限公司 | High-reliability locomotive electric transmission system and control method thereof |
| CN111775973A (en) * | 2020-06-21 | 2020-10-16 | 中车永济电机有限公司 | Locomotive power supply system and control method thereof |
| CN111775973B (en) * | 2020-06-21 | 2021-06-22 | 中车永济电机有限公司 | Locomotive power supply system and control method thereof |
| CN111775972B (en) * | 2020-06-21 | 2021-06-22 | 中车永济电机有限公司 | High-reliability locomotive electric transmission system and control method thereof |
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| Publication number | Publication date |
|---|---|
| CN107786079B (en) | 2019-11-26 |
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