CN102303525B - Electromechanical coupling flywheel kinetic energy recovery device for traffic vehicle - Google Patents
Electromechanical coupling flywheel kinetic energy recovery device for traffic vehicle Download PDFInfo
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- CN102303525B CN102303525B CN 201110168903 CN201110168903A CN102303525B CN 102303525 B CN102303525 B CN 102303525B CN 201110168903 CN201110168903 CN 201110168903 CN 201110168903 A CN201110168903 A CN 201110168903A CN 102303525 B CN102303525 B CN 102303525B
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Abstract
The invention relates to an electromechanical coupling flywheel kinetic energy recovery device for a traffic vehicle, which comprises a flywheel, a clutch, a transmission, a double-rotor motor, a traction rectifying unit, a traction inverter unit, a flywheel inverter unit, a flywheel shaft, a transmission high-speed shaft, a transmission low-speed shaft and a load output shaft. The double-rotor motor comprises the transmission low-speed shaft, a slip ring, an electric brush, an inner rotor, an outer rotor surrounding the inner rotor and a stator surrounding the outer rotor. The slip ring is arranged on the transmission low-speed shaft. The electric brush is in contact with the slip ring. Both the stator and the inner rotor are provided with multiphase windings. The flywheel is connected with the clutch through the flywheel shaft. The clutch is connected with the transmission through the transmission high-speed shaft. The transmission is connected with the inner rotor through the transmission low-speed shaft. The outer rotor is connected with the load output shaft. In the invention, the double-rotor motor is used as the core, kinetic energy is transferred back and forth between the flywheel and a load by the electromechanical coupling between the inner and outer rotors and the stator, the loss is low, and the overall efficiency is high.
Description
Technical field
The invention belongs to the traffic technique field, be specifically related to a kind of vehicular traffic kinetic energy recovery system.
Background technology
Now, global vehicular traffic all be faced with industry development and protection of the environment this to contradiction.Energy problem and carbon-dioxide emission have been to need to start immediately the problem that solves in face of putting, and people guarantee the sustainable development of auto-industry and rail traffic vehicles in the urgent need to high efficiency green technology.The friction drag that present various types of vehicles utilizes brake system to produce is mostly realized slowing down or stopping, kinetic energy with vehicle during car brakeing changes the heat energy on drg into and has lost in vain, vehicular traffic generally can work in deceleration, parking, starting, Afterburning condition continually, particularly outstanding at urban rail transit vehicles and urban public traffic vehicles, the loss of this energy is considerable, this makes society to the increase in demand of the energy, has aggravated the pressure of resources and environment.
The existing energy-conservation method of transport solution car brakeing mainly contains:
1. resistance energy-dissipating type regenerative brake kinetic energy recovery system.Adopt power electronic device and energy consumption resistor to form chopper, braking energy consumption on energy consumption resistor, is not used to braking kinetic energy.In the Urban Underground rail traffic vehicles, a large amount of heat radiations of resistance also can cause ambient temperature to rise, and have increased the load of ventilation engine installation or air temp regulator, thereby have increased corresponding power consumption.
2. oil pump kinetic energy recovery system.Utilize the reversible operation principle of oil pump-oil motor, oil pump changes the kinetic energy of vehicle into the pressure energy of liquid when car brakeing, is stored in hydraulic accumulator, and in the time of need to releasing energy, oil motor helps driving engine to make vehicle launch or reinforcing.There are Hydraulic Elements in this mode, and system architecture is complicated, and reliability is lower.
3. storage battery or electric capacity-motor kinetic energy recovery system.Adopt inverter that the regenerating braking energy of vehicle is recovered in storage battery, large bulk capacitance, the method need to arrange the larger battery pack of volume or cond group, this is due to battery or cond as energy storage component, its technical index there is very high requirement, up to the present, battery and cond also need further to improve its energy density.In addition, the service life of battery and electric capacity and safety are also problems.
4. stepless change flywheel energy recovery system.Adopt circle ring surface driving device efficient, compact, the speed ratio continuous variable, realize that vehicle braking kinetic-energy reclaims, infinite variable speed circle ring surface driving device has connected flywheel and many grades of conventional gear transmissions, pass through adjusting speed ratio, allow kinetic energy walk up and down with the mode between of optimum, rather than lose by brake disc fully.This mode configuration is compact, energy transfer efficiency even exceeds 90%, overall performance is better than storage battery or electric capacity-motor mode, and the advantage of stepless change flywheel energy recovery system also comprises: operating temperature is interval wide, safety and stability, the life-span is long, reusable and environmental protection.But the core component stepless change circle ring surface driving device manufacture difficulty in this system is large, it is high to require, and is difficult to realize high pulling torque output, and this technology does not also have maturation at present.
Therefore, be necessary to reform the kinetic energy recovery system of vehicular traffic, further improve the performance of kinetic energy recovery system.
Summary of the invention
Technical matters:The present invention is directed to the problems such as reliability that the conventional traffic kinetic energy recovery system of vehicles exists, cost, efficient, a kind of kinetic energy recovery device for flywheel of transport vehicle that is applicable to the electromechanical coupling that efficient is high, the life-span is long, cost is low of all electrically driven vehicles is provided.
Technical scheme:A kind of kinetic energy recovery device for flywheel of transport vehicle, comprise flywheel, power-transfer clutch, change-speed box, double-rotor machine, traction invertor unit, flywheel inverter unit, traction rectifier unit, flywheel shaft, change-speed box high speed shaft and load output shaft, described double-rotor machine comprises change-speed box slow-speed shaft, slip ring, brush, internal rotor, around the outer rotor of described internal rotor, around the stator of described outer rotor, described slip ring is arranged on the change-speed box slow-speed shaft, described brush contacts with slip ring, and described stator and internal rotor are provided with polyphase winding; Described flywheel is connected with power-transfer clutch by flywheel shaft, described power-transfer clutch is connected with change-speed box by the change-speed box high speed shaft, described change-speed box is connected with the internal rotor of double-rotor machine by the change-speed box slow-speed shaft, and the outer rotor of double-rotor machine is connected with the load output shaft; The polyphase winding of described stator is connected with the interchange end of traction invertor unit by wire, be connected dc terminal with the dc terminal of traction invertor unit respectively by wire and be connected in described traction rectifier unit with the flywheel inverter unit, the interchange end of flywheel inverter unit is connected with brush by wire, slip ring is connected with the polyphase winding of internal rotor by wire, and slip ring keeps being electrically connected to static brush when rotating with the change-speed box slow-speed shaft.
The kinetic energy recovery device for flywheel of transport vehicle of electromechanical coupling of the present invention is when car brakeing or deceleration, and power-transfer clutch is closed, flywheel energy storage.This moment, the flywheel inverter unit was exported by straight-alternation the direct current (DC) of traction rectifier unit input after being changed to the AC excitation electric current that equates with the inner and outer Rotator slip frequency; The flywheel inverter unit is delivered to the internal rotor winding by wire, brush and slip ring with exciting current, set up coupled magnetic field and produce electromagnetic coupled power between inner and outer Rotator, the kinetic energy of load is delivered to internal rotor by the outer rotor of double-rotor machine, internal rotor drives the flywheel raising speed by change-speed box and power-transfer clutch, the kinetic energy of load is changed into the kinetic energy of flywheel.When vehicle launch or acceleration, power-transfer clutch is closed, flywheel is released can, high speed flywheel is by the internal rotor of change-speed box deceleration rear drive double-rotor machine, and the AC excitation electric current that this moment, the output of flywheel inverter unit equated with the inner and outer Rotator slip frequency is set up coupled magnetic field and produced electromagnetic coupled power between inner and outer Rotator, pass through magnetic Field Coupling, kinetic energy on internal rotor is delivered to outer rotor, and drives the load raising speed by the load output shaft, and flywheel energy changes load kinetic energy into.In flywheel energy storage or flywheel exoergic process, kinetic energy is not converted to electric energy, and kinetic energy only transmits between flywheel and load back and forth by magnetic Field Coupling, and kinetic energy mode with mechanical energy in energy transfer process exists.When the vehicle smooth running, power-transfer clutch is opened, this moment, flywheel was in rotating freely under energy storage state, neither absorb energy and do not release energy yet, the flywheel inverter unit is not worked, no current circulation on the internal rotor winding at this moment, the flywheel inverter unit is equivalent to open-circuit condition, traction invertor cell operation simultaneously changes the direct current (DC) of traction rectifier unit output into alternating current and is delivered to the stator of double-rotor machine, produces the propulsive effort of traction vehicular traffic on the outer rotor of double-rotor machine.
The effect of the flywheel inverter unit in the present invention is that the excitation source of variable frequency is provided for the internal rotor winding in flywheel energy storage or exoergic process, set up coupled magnetic field between inner and outer Rotator, thereby produce electromechanical coupling power between inner and outer Rotator, reach the transmission of kinetic energy between flywheel and load.The effect of traction invertor unit is for stator winding provides working current, drives outer rotor and rotates with the rigidly connected load of outer rotor.When car brakeing or deceleration, do not work in the traction invertor unit, when vehicle launch or acceleration, traction invertor unit and flywheel inverter unit are worked simultaneously, and the kinetic energy on outer rotor is making a concerted effort of traction invertor unit and flywheel inverter unit combined action formation.The effect of traction rectifier unit is to provide direct supply for flywheel inverter unit and traction invertor unit.
The flywheel inverter unit flywheel energy storage or release can the time, for the internal rotor of double-rotor machine provides the variable frequency excitation source, the frequency of described variable frequency excitation source equals the slip frequency that the speed discrepancy of internal rotor and outer rotor causes.
Adopt in the present invention change-speed box be conventional fixed speed ratio gear transmission, the change-speed box high speed shaft is connected with flywheel by power-transfer clutch, the change-speed box slow-speed shaft is connected with the internal rotor of double-rotor machine.
Double-rotor machine outer rotor in the present invention can be magneto, can be also squirrel-cage or Wound-rotor type.
Beneficial effect:The present invention reclaims flywheel as the vehicular traffic braking kinetic energy energy storage component, the flywheel that energy storage is used have advantages of that the life-span is long, cost is low, energy density and power density large.
The present invention is take double-rotor machine as core, by the electromechanical coupling between inner and outer Rotator and stator, allow kinetic energy transmit back and forth between flywheel and load, because most of kinetic energy mode with mechanical energy in energy transfer process exists, reduce the loss that the conversion of mechanical energy and electric energy produces, thereby improved entire system efficient.
The present invention adopts the flywheel inverter unit to provide excitation source for the internal rotor of double-rotor machine, its frequency values changes (equaling slip frequency) with the variation of internal rotor and outer rotor speed discrepancy, make the double-rotor machine internal rotor realize stepless change, can regulate continuously the rotating speed of flywheel after being connected to flywheel by power-transfer clutch, thereby realize the energy storage of flywheel and release energy.
The present invention realizes machinery-free contact between two mechanical rotating shafts of infinite variable speed double-rotor machine (change-speed box slow-speed shaft and load output shaft), operation can not produce wearing and tearing, thereby the life-span is long, maintenance cost is low, can satisfy the needs of high-power applications occasion, vehicular traffic flywheel energy recovery system of the present invention is applicable to all and uses power-actuated vehicle.
Description of drawings
Fig. 1 is structural representation of the present invention.
Have in figure: flywheel 1, power-transfer clutch 2, change-speed box 3, double-rotor machine 4, stator 41, outer rotor 42, internal rotor 43, slip ring 44, brush 45, traction rectifier unit 5, flywheel shaft 6, change-speed box high speed shaft 7, change-speed box slow-speed shaft 8, load output shaft 9,, flywheel inverter unit 10, traction invertor unit 11.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing.
as seen from Figure 1, a kind of kinetic energy recovery device for flywheel of transport vehicle of electromechanical coupling, comprise flywheel 1, power-transfer clutch 2, change-speed box 3, double-rotor machine 4, traction invertor unit 11, flywheel inverter unit 10, traction rectifier unit 5, , flywheel shaft 6, change-speed box high speed shaft 7 and load output shaft 9, described double-rotor machine 4 comprises change-speed box slow-speed shaft 8, slip ring 44, brush 45, internal rotor 43, outer rotor 42 around described internal rotor 43, stator 41 around described outer rotor 42, described slip ring 44 is arranged on change-speed box slow-speed shaft 8, described brush 45 contacts with slip ring 44, described stator 41 and internal rotor 43 are provided with polyphase winding, described flywheel 1 is connected with power-transfer clutch 2 by flywheel shaft 6, described power-transfer clutch 2 is connected with change-speed box 3 by change-speed box high speed shaft 7, described change-speed box 3 is connected with the internal rotor 43 of double-rotor machine 4 by change-speed box slow-speed shaft 8, and the outer rotor 42 of double-rotor machine 4 is connected with load output shaft 9, the polyphase winding of described stator 41 is connected by the interchange end of wire with traction invertor unit 11, described traction rectifier unit 5 is connected with the dc terminal that the dc terminal of traction invertor unit 11 is connected with the flywheel inverter unit respectively by wire, the interchange end of flywheel inverter unit 10 is connected with brush 45 by wire, slip ring 44 is connected by the polyphase winding of wire with internal rotor 43, and slip ring 44 is electrically connected to static brush 45 maintenances with change-speed box slow-speed shaft 8 rotation the time.
In the present invention take double-rotor machine as core, by the electromechanical coupling between inner and outer Rotator and stator, allow kinetic energy transmit back and forth between flywheel and load, because most of kinetic energy mode with mechanical energy in energy transfer process exists, reduce the loss that the conversion of mechanical energy and electric energy produces, thereby improved entire system efficient.When car brakeing or deceleration, power-transfer clutch is closed, and the kinetic energy of load is delivered to internal rotor by the outer rotor of double-rotor machine, and internal rotor drives the flywheel raising speed by change-speed box and power-transfer clutch, the kinetic energy of load is changed into the kinetic energy of flywheel; At vehicle launch or when accelerating, power-transfer clutch is closed, and high speed flywheel is by the internal rotor of change-speed box deceleration rear drive double-rotor machine, and the kinetic energy of flywheel is delivered to outer rotor and drives the load raising speed by rotating shaft, and flywheel energy changes load kinetic energy into; During the vehicle smooth running, power-transfer clutch is opened, flywheel is in energy storage state, neither absorbing energy does not release energy yet, this moment, flywheel inverter unit and internal rotor circuit disconnected, the internal rotor of double-rotor machine remains static, the double-rotor machine equivalence is the synchronous or asynchronous dynamo of a single stator, single rotor, the direct current (DC) of traction rectifier unit output changes alternating current into by the traction invertor unit and is delivered to the stator of double-rotor machine, produces the propulsive effort of traction vehicular traffic on the outer rotor of double-rotor machine.
In the present invention, when the vehicle smooth running, according to the vehicle traction control strategy of routine, devoted oneself to work in the traction invertor unit, and the flywheel inverter unit is not worked; When car brakeing or starting, work simultaneously in flywheel inverter unit and traction invertor unit, respectively to internal rotor and stator power supply, form driving or deceleration loading needed with joint efforts on outer rotor, this moment, the flywheel inverter unit was regulated the rotating speed of internal rotor and flywheel, the power frequency of flywheel inverter unit input internal rotor is the slip frequency of internal rotor and outer rotor speed discrepancy, thereby realizes stepless change between flywheel and load, carries out the energy storage of flywheel or releases energy by power-transfer clutch.Realize machinery-free contact between two mechanical rotating shafts of infinite variable speed double-rotor machine in the present invention, operation can not produce wearing and tearing, thereby the life-span is long, and maintenance cost is low, can satisfy the needs of high-power applications occasion.The energy storage component that flywheel reclaims as the vehicular traffic braking kinetic energy, the flywheel that energy storage is used have advantages of that the life-span is long, cost is low, energy density and power density large.
Claims (2)
1. the kinetic energy recovery device for flywheel of transport vehicle of an electromechanical coupling, it is characterized in that, this kinetic energy recovery device comprises flywheel (1), power-transfer clutch (2), change-speed box (3), double-rotor machine (4), traction invertor unit (11), flywheel inverter unit (10), traction rectifier unit (5), flywheel shaft (6), change-speed box high speed shaft (7) and load output shaft (9), described double-rotor machine (4) comprises change-speed box slow-speed shaft (8), slip ring (44), brush (45), internal rotor (43), outer rotor (42) around described internal rotor (43), stator (41) around described outer rotor (42), described slip ring (44) is arranged on change-speed box slow-speed shaft (8), described brush (45) contacts with slip ring (44), described stator (41) and internal rotor (43) are provided with polyphase winding,
Described flywheel (1) is connected with power-transfer clutch (2) by flywheel shaft (6), described power-transfer clutch (2) is connected with change-speed box (3) by change-speed box high speed shaft (7), described change-speed box (3) is connected with the internal rotor (43) of double-rotor machine (4) by change-speed box slow-speed shaft (8), and the outer rotor (42) of double-rotor machine (4) is connected with load output shaft (9);
The polyphase winding of described stator (41) is connected by the interchange end of wire with traction invertor unit (11), described traction rectifier unit (5) is connected 10 with the dc terminal of traction invertor unit (11) with the flywheel inverter unit respectively by wire) dc terminal be connected, the interchange end of flywheel inverter unit (12) is connected with brush (45) by wire, slip ring (44) is connected by the polyphase winding of wire with internal rotor (43), and slip ring (44) keeps being electrically connected to static brush (45) when rotating with change-speed box slow-speed shaft (8).
2. the kinetic energy recovery device for flywheel of transport vehicle of electromechanical coupling according to claim 1, is characterized in that, described outer rotor (42) is magneto, squirrel-cage or Wound-rotor type.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110168903 CN102303525B (en) | 2011-06-22 | 2011-06-22 | Electromechanical coupling flywheel kinetic energy recovery device for traffic vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110168903 CN102303525B (en) | 2011-06-22 | 2011-06-22 | Electromechanical coupling flywheel kinetic energy recovery device for traffic vehicle |
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| CN102303525A CN102303525A (en) | 2012-01-04 |
| CN102303525B true CN102303525B (en) | 2013-06-05 |
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| CN103978896B (en) * | 2014-05-28 | 2016-05-18 | 青岛大学 | A kind of based on the recoverable load isolation formula power-driven system of braking |
| CN104269913B (en) * | 2014-10-24 | 2016-03-30 | 周建峰 | Electric motor car kinetic energy Inertia in Airflow charging device |
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