CN101708684A - Series hybrid dynamic system based on super capacitor and energy distribution method - Google Patents
Series hybrid dynamic system based on super capacitor and energy distribution method Download PDFInfo
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- CN101708684A CN101708684A CN200910226676A CN200910226676A CN101708684A CN 101708684 A CN101708684 A CN 101708684A CN 200910226676 A CN200910226676 A CN 200910226676A CN 200910226676 A CN200910226676 A CN 200910226676A CN 101708684 A CN101708684 A CN 101708684A
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- 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
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- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
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Abstract
The invention discloses a series hybrid dynamic system based on a super capacitor and an energy distribution method. A topological structure and a control method are adopted to realize the purpose that fewer super capacitors can finish series hybrid dynamic normal driving and uttermost braking energy recovery; the topological structure and the control method are characterized in that a motor and a motor controller thereof serve as the only power source of a finished automobile to drive the finished automobile and feed back braking energy; the motor and a generator serve as the active energy source of the whole system to be totally decoupled with finished automobile driving; the motor works in a high-efficiency zone all the time so as to lower oil consumption and lower emission; after being rectified by a rectifier, the generator provides a working power supply for a super capacitor set and a motor controller; a finished automobile control system is arranged in front of the generator; the super capacitor set serves as a system energy storage system to provide required electric energy for the motor controller as well as absorbing the recovered energy of an electrically driven system. The invention utilizes a topology system control method to effectively solve the deficiencies of low efficiency, short service life and the like of series hybrid dynamic energy storage systems.
Description
Technical field:
The present invention relates to a kind of mode of automobile power, refer in particular to a kind of series connection type hybrid power system and energy distributing method based on super capacitor.Be mainly used in hybrid vehicle, be particularly suitable for the city bus motorcoach.
Background technology:
Series hybrid electric vehicle is easy to control because flexible arrangement is simple in structure, and used power of motor is bigger than parallel, be beneficial to the recovery braking energy, and the city bus acceleration and deceleration is frequent, the low-intensity damped condition is many, so tandem especially is fit to city bus.
But series hybrid-power more and more becomes the bottleneck that the restriction serial mixed power further develops to the dependence of closed-centre system, traditional electrokinetic cell is the form of closed-centre system, battery efficiency, battery descend rapidly service life under long-time large current density operating mode, promptly influence system's fuel-economizing ability, increased system maintenance, replacement cost simultaneously again.
In recent years, Chinese scholars and designer be in order to make the SHEV oil consumption minimum, discharges minimumly, and system cost is minimum, the driveability optimum design multiple energy control strategy.These strategies can be divided into two big classes by its character: a class is the control of passive-type energy, and another kind of is active energy control.The control of passive-type energy is to guarantee that battery and engine operation satisfy a kind of master mode of vehicle power demand passively under the condition of best effort district scope.This master mode is its main purpose to improve energy Flow efficient.Active energy control is exactly when paying attention to improving automotive system internal energy flow efficiency, initiatively reduces the energy management pattern of vehicle power demand, expansion regenerating braking energy again according to environment.The big system capacity consumes least that this energy management pattern is formed with minimizing people's (chaufeur), car, road is a main purpose.
Active energy control has the characteristics of the control of becoming more meticulous because combine multiple optimization algorithm with theoretical, therefore is the main flow of modern control development.And the difficulty of active energy management control policy maximum is to need immediately to know in advance running route, condition of road surface and the traffic signal situation of this car, could make control in real time in advance.
Along with the continuous progress of control technology,, on the basis of global optimization energy management strategy, begin constantly to be studied exploitation for energy management strategy based on road condition identification to the intensification of hybrid-power bus control policy research.
The super capacitor of the double-deck organic system of present up-to-date exploitation has advantages such as internal resistance is low, charge discharge efficiency is high, long service life.But because characteristics such as its energy density is lower, self-discharge rate height make it to satisfy the requirement of series hybrid-power closed-centre system.Especially how rationally carry out still not having ready-made technology, necessary in addition further research to this based on the series connection type hybrid power system and the energy distribution of super capacitor.
Summary of the invention:
The objective of the invention is deficiency at existing method for complete vehicle control of tandem type hybrid bus, proposed a kind of based on super capacitor separately as the series connection type hybrid power system and the control method of closed-centre system, utilize this system and control corresponding method to solve the shortcoming that serial mixed power closed-centre system efficient is low, the life-span is short by actv., also can avoid low car load dynamic property deficiency, the more high shortcoming of bringing of cost of super capacitor self-energy simultaneously.
Technology implementation scheme of the present invention is as follows: a kind of based on super capacitor separately as the series connection type hybrid power system method of closed-centre system, adopt later-model topological structure and control method to realize just finishing the driven of serial mixed power and braking energy recovery to greatest extent with less super capacitor.Described topological structure and control method are motor and controller thereof as unique drive power source car load of car load and realize the braking energy feedback.Driving engine, electrical generator are originated as the active energy of total system, travel with car load and separate lotus root fully, and efficient district reduces oil consumption, alkali discharges less thereby driving engine is operated in always.Super capacitor provides required electric energy as the system stored energy system for electric machine controller, absorbs the power drive system recuperated energy simultaneously.
On car load energy distribution strategy with car load kinetic energy and super capacitor energy co-operative control, the real-time energy distribution of super capacitor serial mixed power, promptly the real-time energy of car load is that kinetic energy and electric energy sum remain constant.When the speed of a motor vehicle was low, super capacitor kept higher-energy, guarantees the dynamic property that car load is good.Super capacitor stored than low capacity when the speed of a motor vehicle was higher, guaranteed that car load braking energy actv. reclaims.The energy distribution topology flow process of super capacitor serial mixed power is:
1, super capacitor voltage, current signal collection
2, the car load speed of a motor vehicle, ramp acquisition of signal
2, super capacitor system capacity estimation
Sampled result estimation super capacitor group useful capacity according to flow process 1.
ε
1Super capacitor energy C super capacitor group capacitance
U
IThe super capacitor voltage U
oSuper capacitor work cut-off voltage
4, car load kinetic energy is estimated in real time
Sampled result according to flow process 2 is calculated car load kinetic energy.
ε
2＝MV/
2/2*(1+kθ)
ε
2Car load kinetic energy M car load total mass
K ramp, V current vehicle speed θ ramp coefficient of correction
5, the car load gross energy is estimated in real time
ε
v=ε
1+ ε
2ε
vThe car load gross energy
6, car load Engine-Generator outputs state detection
7, next moment aggregate demand energy of car load, car load can provide gross energy to estimate
8, regulate Engine-Generator output according to car load gross energy dynamical equilibrium principle
9, car load demand gross energy can provide energy greater than the car load maximum, the operation of drive motor limit merit, and Engine-Generator is shut down.
The invention has the advantages that: utilize topological system and control corresponding method to solve the shortcoming that serial mixed power closed-centre system efficient is low, the life-span is short by actv., also can avoid low car load dynamic property deficiency, the more high shortcoming of bringing of cost of super capacitor self-energy simultaneously.
Figure of description
Fig. 1 is a system architecture scheme drawing of the present invention;
Fig. 2 distributes topological diagram of circuit for system capacity of the present invention.
The specific embodiment
Technology implementation scheme of the present invention is as follows: a kind of based on super capacitor separately as the series connection type hybrid power system method of closed-centre system, adopt later-model topological structure and control method to realize just finishing the driven of serial mixed power and braking energy recovery to greatest extent with less super capacitor.Described topological structure and control method are with motor 7 and electric machine controller 6 thereof the unique propulsion source as car load, drive car load and also realize the braking energy feedback; Driving engine 2, electrical generator 3 are originated as the active energy of total system, travel with car load and to separate lotus root fully, thereby driving engine 2 is operated in efficient district always reduces oil consumption, emission abatement, and electrical generator 3 provides working power for super capacitor group 5 and electric machine controller 6 after by rectifier 4 rectifications; Be provided with whole-control system 1 in driving engine 2 fronts; Super capacitor group 5 provides required electric energy as the system stored energy system for electric machine controller 6, absorbs the power drive system recuperated energy simultaneously.As shown in Figure 1:
On car load energy distribution strategy with car load kinetic energy and super capacitor energy co-operative control, the real-time energy distribution of super capacitor serial mixed power, promptly the real-time energy of car load is that kinetic energy and electric energy sum remain constant.When the speed of a motor vehicle was low, super capacitor kept higher-energy, guarantees the dynamic property that car load is good.Super capacitor stored than low capacity when the speed of a motor vehicle was higher, guaranteed that car load braking energy actv. reclaims.The energy distribution topology flow process of super capacitor serial mixed power is as follows:
1, super capacitor voltage, current signal collection
2, the car load speed of a motor vehicle, ramp acquisition of signal
3, super capacitor system capacity estimation
Sampled result estimation super capacitor group useful capacity according to flow process 1.
ε
1Super capacitor energy C super capacitor group capacitance
U
1The super capacitor voltage U
oSuper capacitor work cut-off voltage
4, car load kinetic energy is estimated in real time
Sampled result according to flow process 2 is calculated car load kinetic energy.
ε
2＝MV
2/2*(1+kθ)
ε
2Car load kinetic energy M car load total mass
K ramp, V current vehicle speed θ ramp coefficient of correction
5, the car load gross energy is estimated in real time
ε
v=ε
1+ ε
2ε
vThe car load gross energy
6, car load Engine-Generator outputs state detection
7, next moment aggregate demand energy of car load, car load can provide gross energy to estimate
8, regulate Engine-Generator output according to car load gross energy dynamical equilibrium principle
9, car load demand gross energy can provide energy greater than the car load maximum, the operation of drive motor limit merit, and Engine-Generator is shut down.
Accompanying drawing 2 is the energy distribution topology flow process associated diagram of super capacitor serial mixed power, from accompanying drawing as can be seen, the energy distribution topology flow process of super capacitor serial mixed power of the present invention is a net structure, be divided into two paths of signals control, wherein one the tunnel is the real-time control of super capacitor voltage, current signal, and one the tunnel is the control of the car load speed of a motor vehicle, ramp signal; Respectively super capacitor system capacity and car load kinetic energy are estimated by two paths of signals, carry out the real-time estimation of car load gross energy again, again according to car load Engine-Generator outputs state detection result, next moment aggregate demand energy of calculating car load, car load can provide gross energy, regulate Engine-Generator output according to car load gross energy dynamical equilibrium principle again, carry out the distribution of energy; Wherein if car load demand gross energy can provide energy greater than the car load maximum, drive motor limit merit is moved, and Engine-Generator is shut down.
Claims (2)
1. series connection type hybrid power system and energy distributing method based on a super capacitor adopt topological structure and control method to realize just finishing the driven of serial mixed power and braking energy recovery to greatest extent with less super capacitor; It is characterized in that: described topological structure and control method are with motor and electric machine controller thereof the unique propulsion source as car load, drive car load and also realize the braking energy feedback; Driving engine, electrical generator are originated as the active energy of total system, travel with car load and to separate lotus root fully, thereby driving engine is operated in efficient district always reduces oil consumption, emission abatement, and electrical generator provides working power for super capacitor group and electric machine controller after by rectifier rectification; Be provided with whole-control system in the driving engine front; The super capacitor group provides required electric energy as the system stored energy system for electric machine controller, absorbs the power drive system recuperated energy simultaneously.
2. series connection type hybrid power system and energy distributing method based on super capacitor as claimed in claim 1 is characterized in that: the energy distribution topology flow process of described super capacitor serial mixed power is:
A, super capacitor voltage, current signal collection;
B, the car load speed of a motor vehicle, ramp acquisition of signal;
C, the estimation of super capacitor system capacity:
Sampled result estimation super capacitor group useful capacity according to flow process 1
ε
1Super capacitor energy C super capacitor group capacitance
U
1The super capacitor voltage U
0Super capacitor work cut-off voltage;
D, car load kinetic energy are estimated in real time:
Sampled result according to flow process 2 is calculated car load kinetic energy;
ε
2＝MV
2/2*(1+kθ)
ε
2Car load kinetic energy M car load total mass
K ramp, V current vehicle speed θ ramp coefficient of correction;
E, car load gross energy are estimated in real time:
ε
v=ε
1+ ε
2ε
vThe car load gross energy;
F, car load Engine-Generator outputs state detection;
G, next moment aggregate demand energy of car load, car load can provide gross energy to estimate:
Estimate car load demand gross energy according to current ramp, the speed of a motor vehicle, driver's pedal etc.;
According to flow process 5, flow process 6 results calculate next step maximum of car load that gross energy can be provided;
H, regulate Engine-Generator output according to car load gross energy dynamical equilibrium principle;
I, car load demand gross energy can provide energy greater than the car load maximum, the operation of drive motor limit merit, and Engine-Generator is shut down.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104494416A (en) * | 2014-12-10 | 2015-04-08 | 北京航天发射技术研究所 | Energy management system and energy management method for tandem type hybrid power electro-car |
| CN105811558A (en) * | 2016-05-16 | 2016-07-27 | 吉林大学 | Electric motor energy recycling type braking apparatus with energy buffer pool |
| CN106740154A (en) * | 2017-01-04 | 2017-05-31 | 深圳市图门新能源有限公司 | Automobile dynamic system based on carbon-based capacitor batteries group |
| CN106864242A (en) * | 2017-01-17 | 2017-06-20 | 航天重型工程装备有限公司 | The workflow of hybrid electric drive system, vehicle and super capacitor |
| CN107607869A (en) * | 2017-09-20 | 2018-01-19 | 新疆金风科技股份有限公司 | Wind generating set pitch control system failure analysis methods, device and storage medium |
| CN109861360A (en) * | 2019-01-02 | 2019-06-07 | 山东爱特机电技术有限责任公司 | A kind of speed regulation potential energy load energy-saving control circuit |
-
2009
- 2009-12-18 CN CN200910226676A patent/CN101708684A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104494416A (en) * | 2014-12-10 | 2015-04-08 | 北京航天发射技术研究所 | Energy management system and energy management method for tandem type hybrid power electro-car |
| CN104494416B (en) * | 2014-12-10 | 2017-06-13 | 北京航天发射技术研究所 | A kind of serial hybrid electric car EMS and method |
| CN105811558A (en) * | 2016-05-16 | 2016-07-27 | 吉林大学 | Electric motor energy recycling type braking apparatus with energy buffer pool |
| CN106740154A (en) * | 2017-01-04 | 2017-05-31 | 深圳市图门新能源有限公司 | Automobile dynamic system based on carbon-based capacitor batteries group |
| CN106864242A (en) * | 2017-01-17 | 2017-06-20 | 航天重型工程装备有限公司 | The workflow of hybrid electric drive system, vehicle and super capacitor |
| CN107607869A (en) * | 2017-09-20 | 2018-01-19 | 新疆金风科技股份有限公司 | Wind generating set pitch control system failure analysis methods, device and storage medium |
| CN107607869B (en) * | 2017-09-20 | 2019-12-10 | 新疆金风科技股份有限公司 | fault analysis method and device for variable pitch system of wind generating set and storage medium |
| CN109861360A (en) * | 2019-01-02 | 2019-06-07 | 山东爱特机电技术有限责任公司 | A kind of speed regulation potential energy load energy-saving control circuit |
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Application publication date: 20100519 |