CN104960428B - Double source trolleybus and its isolated power supply system - Google Patents
Double source trolleybus and its isolated power supply system Download PDFInfo
- Publication number
- CN104960428B CN104960428B CN201510312238.2A CN201510312238A CN104960428B CN 104960428 B CN104960428 B CN 104960428B CN 201510312238 A CN201510312238 A CN 201510312238A CN 104960428 B CN104960428 B CN 104960428B
- Authority
- CN
- China
- Prior art keywords
- isolated
- fuel cell
- trolleybus
- power supply
- cell system
- 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.)
- Active
Links
Classifications
-
- 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
Landscapes
- Electric Propulsion And Braking For Vehicles (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention relates to a kind of double source trolleybus and its isolated power supply systems, including isolated DC/DC converters, isolated DC/DC switch inputs are for connecting current-collector, output end connects DC bus, energy storage device is connected on DC bus, DC bus is additionally operable to connection high-voltage electric system, and the input terminal of the isolated DC/DC converters is also associated with fuel cell system.As a result of fuel cell system as power source, when gauze voltage fluctuation, fuel cell motive force battery system provides energy by main DC/DC converters, ensures the stabilization of output voltage, improves the stability of the isolated power supply system of trolleybus.
Description
Technical field
The invention belongs to trolleybuses for electrical domain, and in particular to a kind of double source trolleybus and its isolated power supply system
System.
Background technology
Trolleybus is known as the title of " green public transport ", and relative to bus, it directly using the electric energy derived from a wealth of sources, subtracts
The use to fossil energies such as oil, natural gases is lacked；When the vehicle is braked, it can be converted kinetic energy into using regenerative braking
Electric energy feedback improves the utilization rate of the energy to gauze；Meanwhile the noise that the traction motor of trolleybus generates at runtime
To be less than the internal combustion engine of automobile, the noise very little that rubber tyre friction generates increases the comfort level of seating；Moreover, because
Without using fuel and machine oil so that its clean hygiene, maintenance are simple.Therefore, trolleybus is a kind of energy conservation and environmental protection, comfort and health
Track vehicle, have good development prospect.
Traditional trolleybus due to there is high-voltage safety by dispute, cannot achieve with the high pressure of gauze every
From, when vehicle failure of insulation, easily makes vehicle and be greatly connected to, the injury that the generation person gets an electric shock.And high pressure failpoint is more, failure
Risk is big.If individually increasing isolating device in vehicle power-supply system, there are modules to repeat, designs the shortcomings of redundancy, in addition
Traditional trolleybus cannot achieve off-line operation, and when gauze breaks down or maintains, vehicle can not be moved flexibly.
Publication No. is that the patent document of CN204055405U discloses a kind of isolated power supply system of trolleybus.Including
Isolated DC/DC converters for being connect with current-collector, isolated DC/DC converters connect electrokinetic cell system, it is described every
There are alternating-current charging interface, the electrokinetic cell system to have direct-current charging interface from formula DC/DC converters.When vehicle hanging net operation
When, which connects gauze by current-collector, and power grid is charged by isolated DC/DC converters to electrokinetic cell system,
Electrokinetic cell system provides vehicle demand power；When vehicle off-grid is run, electrokinetic cell system is powered to vehicle simultaneously.This is dynamic
Gauze is isolated with vehicle by isolated DC/DC current transformers for Force system, improves the safety of trolleybus；Pass through power electric
Cell system is powered to vehicle, realizes the off-line operation of trolleybus.But when gauze voltage fluctuation, it may can not expire
Sufficient power demand of motors；Simultaneously as needing to charge to electrokinetic cell system, gauze output voltage can be further decreased.Therefore,
The stability of the dynamical system is poor.
Invention content
The object of the present invention is to provide a kind of double source trolleybus and its isolated power supply systems, to solve the prior art
In trolleybus dynamical system stability poor.
To achieve the above object, the solution of the present invention includes：
A kind of isolated power supply system of trolleybus, including isolated DC/DC converters, isolated DC/DC converters are defeated
Enter end and connects DC bus for connecting current-collector, output end, be connected with energy storage device on DC bus, DC bus is additionally operable to
High-voltage electric system is connected, the input terminal of the isolated DC/DC converters is also associated with fuel cell system.
The energy storage device is super capacitor system.
It is connected with control switch K3 between the fuel cell system and the input terminal of isolated DC/DC converters and prevents
Current-collector conveys the diode of energy to fuel cell system.
The control section of the isolated power supply system of trolleybus includes HCU, and HCU connects fuel electricity by controlling bus
Cell system, the driving circuit of isolated DC/DC or control circuit.
Pre-charge circuit is equipped between the current-collector and the isolated DC/DC switch inputs；The precharge
Circuit connects current-collector by counnter attack diode.
The pre-charge circuit includes the preliminary filling branch and fling branch that two parallel connections；The preliminary filling branch includes control
Control the switch K1, K1 of gauze power supply break-make are in series with a resistor；The straight branch that fills includes the control for controlling gauze power supply break-make
Switch K2.
A kind of trolleybus, including the isolated power supply system of trolleybus, the isolated power supply system packet of trolleybus
Isolated DC/DC converters are included, isolated DC/DC switch inputs connect DC bus for connecting current-collector, output end,
Energy storage device is connected on DC bus, DC bus is additionally operable to connection high-voltage electric system, the isolated DC/DC converters
Input terminal be also associated with fuel cell system.
The energy storage device is super capacitor system.
It is connected with control switch K3 between the fuel cell system and the input terminal of isolated DC/DC converters and prevents
Current-collector conveys the diode of energy to fuel cell system.
Pre-charge circuit is equipped between the current-collector and the isolated DC/DC switch inputs；The precharge
Circuit connects current-collector by counnter attack diode.
The pre-charge circuit includes the preliminary filling branch and fling branch that two parallel connections；The preliminary filling branch includes control
Control the switch K1, K1 of gauze power supply break-make are in series with a resistor；The straight branch that fills includes the control for controlling gauze power supply break-make
Switch K2.
Double source trolleybus provided by the invention and its isolated power supply system, as a result of fuel cell system conduct
Power source, when gauze voltage fluctuation, fuel cell motive force battery system provides energy by main DC/DC converters, ensures defeated
The stabilization for going out voltage improves the stability of the isolated power supply system of trolleybus.
Due to being connected with diode, Neng Goufang between fuel cell system and the input terminal of isolated DC/DC converters
Only gauze conveys energy to fuel cell system, improves the service life of fuel cell system.
Due to being connected with pre-charge circuit, when can prevent from starting to charge up, charging current is excessive damages equipment.
Isolated DC/DC converter output ends voltage is adjusted by whole-control system, it is ensured that super capacitor system has conjunction
The braking energy of the volume space storage feedback of reason.
Charging circuit is connected between isolated DC/DC converters by the DC output end in current-collector, ensure that confession
The safety of electric system.
Description of the drawings
Fig. 1 is the basic scheme schematic diagram of the embodiment of the present invention.
Fig. 2 is the concrete scheme schematic diagram of the embodiment of the present invention.
Specific implementation mode
The basic scheme of the present invention is as shown in Figure 1, the isolated power supply system of trolleybus includes isolated DC/DC conversions
Device, isolated DC/DC switch inputs connect DC bus, are connected on DC bus for connecting current-collector, output end
Energy storage device, DC bus are additionally operable to connection high-voltage electric system, and the input terminal of the isolated DC/DC converters is also associated with
Fuel cell system.
Specifically, the technical characteristic involved in above-mentioned basic scheme is specifically described below.
The concrete scheme of the present invention is as shown in Fig. 2, the isolated power supply system of trolleybus includes isolated DC/DC conversions
Device, isolated DC/DC switch inputs connect DC bus, are connected on DC bus for connecting current-collector, output end
Super capacitor system, DC bus are additionally operable to connection high-voltage electric system, and the input terminal of the isolated DC/DC converters also connects
It is connected to fuel cell system.
It is connected with control switch K3 between the fuel cell system and the input terminal of isolated DC/DC converters and is used for
Prevent current-collector from conveying the diode of energy to fuel cell system.
The control section of the isolated power supply system of trolleybus includes HCU, and HCU connects fuel electricity by controlling bus
Cell system, the driving circuit of isolated DC/DC or control circuit.The fuel cell system is connected with bus；Bus be isolated
Formula DC/DC converters, high-voltage electric system are connected；It is also associated with whole-control system in the bus.
Pre-charge circuit is equipped between the current-collector and the isolated DC/DC switch inputs；The precharge
Circuit includes two preliminary filling branches in parallel and flings branch；The preliminary filling branch includes that the control of control gauze power supply break-make is opened
K1 is closed, K1 is in series with a resistor；The straight branch that fills includes the control switch K2 for controlling gauze power supply break-make.The pre-charge circuit
Current-collector is connected by counnter attack diode.
Isolated DC/DC converters are used to ensure the stable output power of the isolated power supply system of trolleybus, locate always
In efficient operation section.
Super capacitor system can recycle the electric energy and braking energy more than needed of fuel cell, while provide momentary high power confession
Electricity.
When vehicle hanging net operation, fuel cell system is as supplementary energy, for ensureing that gauze supply voltage is stablized；When
When vehicle off-grid is run, fuel cell system is as main energy sources, for providing electric energy for vehicle operation.
The isolated power supply system of trolleybus is divided into two kinds of operating modes：
1, hanging net operation pattern
When vehicle hanging net operation, current collector contact gauze takes electricity from gauze, and gauze is as main power source to super capacitor
System charges, and driving vehicle operation provides the mean power needed for vehicle；Fuel cell system auxiliary power source.
When powering on, K1, K2 are closed successively, and K3 is closed.Fuel cell system works as supplementary energy.By isolated
DC/DC converters charge to super capacitor system, and High-Voltage Electrical Appliances system electrification is completed.
When driving, gauze charges as main power source to super capacitor system, driving vehicle operation.Meanwhile super capacitor
System can provide electric energy, to meet the instantaneous significant power demand of motor.
If gauze voltage stabilization is within 30% fluctuation range of nominal value, fuel cell system does not work at this time.When super
When capacitor system voltage drops to isolated DC/DC converters and nominally exports setting value V1, gauze is converted by isolated DC/DC
Device charges to super capacitor system, ensures that super capacitor system voltage is maintained within setting range (V2-V3, wherein V2<V1<
V3).When super capacitor system voltage is more than V3 values 20V or more, isolated DC/DC converters enter standby mode, Zhi Daochao
Grade capacitor system voltage, which is down to when isolated DC/DC converters nominally export setting value V1, just reworks.
If gauze voltage fluctuation is more than nominal value 30% or gauze brownout, fuel cell system work, as auxiliary
Power source provides energy to isolated DC/DC converters, ensure that the output power of the isolated power supply system of trolleybus is steady
It is fixed.
When braking, isolated DC/DC converters enter standby mode, after system enters driving condition, isolated DC/
DC converter rearmings；At this point, super capacitor system recycles fuel braking energy.
2, off-grid operational mode
When vehicle off-grid is run, control switch K2 is disconnected.Fuel cell system is run as main power source driving vehicle,
Isolated DC/DC converters obtain the energy from fuel cell, and working condition is identical as state when vehicle hanging net operation.
In the above-described embodiments, the energy storage device is super capacitor system, as other embodiment, be may be used dynamic
Power battery system.
Further, in the isolated power supply system embodiment of trolleybus, the fuel cell system is connected with bus；
Bus is connected with isolated DC/DC converters, high-voltage electric system；It is also associated with whole-control system in the bus.Vehicle
Control system is used for the coordination to entire power supply system and controls：Such as isolated DC/DC converters are controlled, acquire power supply system
Various electric parameters, control fuel cell system working condition in system etc..This control mode and power supply in the prior art
System control is identical, can also use other kinds of control mode.The solution of the present invention is the variation of power configuration, without
It is control section.
Further, in the isolated power supply system embodiment of trolleybus, the current-collector and the isolated DC/DC
Pre-charge circuit is equipped between switch input；The pre-charge circuit connects current-collector by counnter attack diode.As it
His embodiment, can not use the pre-charge circuit and counnter attack diode.
Further, in the isolated power supply system embodiment of trolleybus, the fuel cell system is opened by control
It closes K3 and connects isolated DC/DC input terminals with diode.As other embodiment, the control switch K3 can not used and prevented
Anti- diode.
Trolleybus embodiment
Trolleybus belongs to double source trolleybus, and the double source refers to that there are two the power supply systems of power source for trolleybus tool
System：Gauze power and it is fuel cell-powered.The specific power supply system is implemented with the isolated power supply system of above-mentioned trolleybus
The isolated power supply system of trolleybus in example is identical, therefore not in this repeated explanation.
Claims (10)
1. a kind of isolated power supply system of trolleybus, it is characterised in that：Including isolated DC/DC converters, isolated DC/DC
Switch input connects DC bus for connecting current-collector, output end, and energy storage device is connected on DC bus, and direct current is female
Line is additionally operable to connection high-voltage electric system, and the input terminal of the isolated DC/DC converters is also associated with fuel cell system, whole
When vehicle hanging net operation, the fuel cell system is as supplementary energy, for ensureing that gauze supply voltage is stablized；
Specifically, when vehicle hanging net operation, if gauze voltage stabilization is being set within fluctuation range, fuel cell system not work
Make；When gauze voltage fluctuation is more than setting fluctuation range or gauze voltage is less than setting value, fuel cell is as auxiliary power
Source provides energy to isolated DC/DC converters；
When vehicle off-grid is run, fuel cell system as main power source driving vehicle operation, isolated DC/DC converters from
Fuel cell system obtains the energy.
2. the isolated power supply system of trolleybus according to claim 1, it is characterised in that：The energy storage device is super
Capacitor system.
3. the isolated power supply system of trolleybus according to claim 1, it is characterised in that：The fuel cell system with
It is connected with control switch K3 between the input terminal of isolated DC/DC converters and prevents current-collector from conveying energy to fuel cell system
The diode of amount.
4. the isolated power supply system of trolleybus according to claim 1, it is characterised in that：The trolleybus is isolated
The control section of power supply system includes HCU, and HCU connects the driving electricity of fuel cell system, isolated DC/DC by controlling bus
Road or control circuit.
5. the isolated power supply system of trolleybus according to claim 1, it is characterised in that：The current-collector with it is described every
From between formula DC/DC switch inputs be equipped with pre-charge circuit；The pre-charge circuit connects current collection by counnter attack diode
Device.
6. the isolated power supply system of trolleybus according to claim 5, it is characterised in that：The pre-charge circuit includes
Two preliminary filling branches in parallel and directly fill branch；The preliminary filling branch includes control the switch K1, K1 for controlling gauze power supply break-make
It is in series with a resistor；The straight branch that fills includes the control switch K2 for controlling gauze power supply break-make.
7. a kind of trolleybus, it is characterised in that：Including the isolated power supply system of trolleybus, the isolated confession of trolleybus
Electric system includes isolated DC/DC converters, and isolated DC/DC switch inputs are for connecting current-collector, output end connection
DC bus is connected with energy storage device on DC bus, and DC bus is additionally operable to connection high-voltage electric system, described isolated
The input terminal of DC/DC converters is also associated with fuel cell system, and when vehicle hanging net operation, the fuel cell system is as auxiliary
The energy is helped, for ensureing that gauze supply voltage is stablized；
Specifically, when vehicle hanging net operation, if gauze voltage stabilization is being set within fluctuation range, fuel cell system not work
Make；When gauze voltage fluctuation is more than setting fluctuation range or gauze voltage is less than setting value, fuel cell is as auxiliary power
Source provides energy to isolated DC/DC converters；
When vehicle off-grid is run, fuel cell system as main power source driving vehicle operation, isolated DC/DC converters from
Fuel cell system obtains the energy.
8. trolleybus according to claim 7, it is characterised in that：The energy storage device is super capacitor system.
9. trolleybus according to claim 7, it is characterised in that：The fuel cell system turns with isolated DC/DC
It is connected with control switch K3 between the input terminal of parallel operation and prevents current-collector to the diode of fuel cell system conveying energy.
10. trolleybus according to claim 7, it is characterised in that：The current-collector is converted with the isolated DC/DC
Pre-charge circuit is equipped between device input terminal；The pre-charge circuit connects current-collector by counnter attack diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510312238.2A CN104960428B (en) | 2015-06-09 | 2015-06-09 | Double source trolleybus and its isolated power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510312238.2A CN104960428B (en) | 2015-06-09 | 2015-06-09 | Double source trolleybus and its isolated power supply system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104960428A CN104960428A (en) | 2015-10-07 |
| CN104960428B true CN104960428B (en) | 2018-09-14 |
Family
ID=54214585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510312238.2A Active CN104960428B (en) | 2015-06-09 | 2015-06-09 | Double source trolleybus and its isolated power supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104960428B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109347189A (en) * | 2015-12-04 | 2019-02-15 | 郑州宇通客车股份有限公司 | A kind of power supply system for trolley bus and its method for controlling power supply |
| CN105383320B (en) * | 2015-12-08 | 2018-04-03 | 上海航天电源技术有限责任公司 | One kind is used for cell management system of electric automobile alternative power source system and application method |
| CN110126634A (en) * | 2019-05-30 | 2019-08-16 | 江苏易飞特科技有限公司 | The method of supplying power to of rail vehicle |
| CN110116639A (en) * | 2019-05-30 | 2019-08-13 | 江苏易飞特科技有限公司 | The method of supplying power to of rail vehicle based on super capacitor |
| DE102019211230A1 (en) * | 2019-07-29 | 2021-02-04 | Scania Cv Ab | vehicle |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103448573A (en) * | 2013-07-29 | 2013-12-18 | 华北电力大学（保定） | High-voltage direct-current tractive power supply system of bidirectional interactive electrified railway |
| CN104052079A (en) * | 2013-03-15 | 2014-09-17 | 余名俊 | Electric energy feedback type electronic load |
| CN204161140U (en) * | 2014-06-13 | 2015-02-18 | 郑州宇通客车股份有限公司 | Double source trackless trolley car and power system thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104097526B (en) * | 2014-06-13 | 2017-04-05 | 郑州宇通客车股份有限公司 | A kind of double source trolleybus and its dynamical system |
| CN204161139U (en) * | 2014-06-13 | 2015-02-18 | 郑州宇通客车股份有限公司 | Novel double source trackless trolley car and power system thereof |
| CN104097527B (en) * | 2014-06-13 | 2017-04-05 | 郑州宇通客车股份有限公司 | A kind of new double source trolleybus and its dynamical system |
| CN204895161U (en) * | 2015-06-09 | 2015-12-23 | 郑州宇通客车股份有限公司 | Two source trolley bus and isolated power supply system thereof |
-
2015
- 2015-06-09 CN CN201510312238.2A patent/CN104960428B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104052079A (en) * | 2013-03-15 | 2014-09-17 | 余名俊 | Electric energy feedback type electronic load |
| CN103448573A (en) * | 2013-07-29 | 2013-12-18 | 华北电力大学（保定） | High-voltage direct-current tractive power supply system of bidirectional interactive electrified railway |
| CN204161140U (en) * | 2014-06-13 | 2015-02-18 | 郑州宇通客车股份有限公司 | Double source trackless trolley car and power system thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104960428A (en) | 2015-10-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104960428B (en) | Double source trolleybus and its isolated power supply system | |
| CN107804326B (en) | Traction motor power supply system and electric locomotive power supply equipment | |
| CN203496891U (en) | Dual-power supply system of railway vehicle | |
| US9013168B2 (en) | System for transferring energy from an energy source and method of making same | |
| CN204905907U (en) | Insert electric formula electric automobile and on -vehicle charging source system thereof | |
| TW201736159A (en) | Hybrid power delivery with improved power control | |
| WO2011045248A3 (en) | Electrical connecting device for hybrid and electric vehicles and associated method for charging | |
| CN103189230A (en) | Power supply apparatus for electric vehicle, method of controlling power supply apparatus, and electric vehicle | |
| CN103754124B (en) | The pure Electric Bus control system of a kind of electricity electricity mixing | |
| CN102149564B (en) | Device for recharging a storage system comprising two storage elements and associated methods for using such a recharging device | |
| CN103832286B (en) | A kind of energy control method of hybrid power mine electric wheel dump | |
| CN109861331B (en) | High-efficiency charging control device for pure electric vehicle and control strategy thereof | |
| CN105150864B (en) | A kind of double source trolleybus dynamical system and control method | |
| CN107733055B (en) | Charging system for vehicle-mounted power battery of oil-electricity hybrid power locomotive | |
| CN101593985B (en) | Self-powered charging device and charging method | |
| CN104139706B (en) | A kind of trolleybus and its isolated electric power system | |
| CN104097527A (en) | Novel two-source trolleybus and power system thereof | |
| CN205202756U (en) | Locomotive traction system | |
| CN204055405U (en) | Trackless trolley car and isolated electric power system thereof | |
| CN104917279B (en) | A kind of electric automobile communication base station emergency power supply system | |
| CN108321864B (en) | Charging system with multi-terminal complementary input and output energy coordinated distribution and control method | |
| CN205901433U (en) | On -vehicle power take -off generate electricity power supply system | |
| CN204895161U (en) | Two source trolley bus and isolated power supply system thereof | |
| CN110341518A (en) | A kind of highly integrated formula charge and discharge device | |
| CN205086705U (en) | Hybrid locomotive ground charging system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 450061 Yudao Road, Guancheng District, Zhengzhou City, Henan Province Patentee after: Yutong Bus Co., Ltd Address before: 450016 Yutong Industrial Zone, eighteen Li River, Henan, Zhengzhou Patentee before: Zhengzhou Yutong Bus Co., Ltd |
|
| CP03 | Change of name, title or address |