DE10044954A1 - Controlling electric vehicle with internal combustion engine and unregulated generator involves specifying demanded drive torque directly at internal combustion engine - Google Patents

Controlling electric vehicle with internal combustion engine and unregulated generator involves specifying demanded drive torque directly at internal combustion engine

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Publication number
DE10044954A1
DE10044954A1 DE10044954A DE10044954A DE10044954A1 DE 10044954 A1 DE10044954 A1 DE 10044954A1 DE 10044954 A DE10044954 A DE 10044954A DE 10044954 A DE10044954 A DE 10044954A DE 10044954 A1 DE10044954 A1 DE 10044954A1
Authority
DE
Germany
Prior art keywords
internal combustion
combustion engine
drive torque
electric vehicle
controlling electric
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.)
Withdrawn
Application number
DE10044954A
Other languages
German (de)
Inventor
Herbert Ott
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZF Friedrichshafen AG
Original Assignee
ZF Friedrichshafen AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ZF Friedrichshafen AG filed Critical ZF Friedrichshafen AG
Priority to DE10044954A priority Critical patent/DE10044954A1/en
Publication of DE10044954A1 publication Critical patent/DE10044954A1/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
    • B60K6/46—Series type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00—Control systems specially adapted for hybrid 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
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/48—Drive Train control parameters related to transmissions
    • B60L2240/486—Operating parameters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2710/00—Output or target parameters relating to a particular sub-units
    • B60W2710/06—Combustion engines, Gas turbines
    • B60W2710/0666—Engine torque
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2710/00—Output or target parameters relating to a particular sub-units
    • B60W2710/10—Change speed gearings
    • B60W2710/1022—Input torque
    • 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
    • Y02T10/62—Hybrid vehicles

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The method involves specifying the demanded drive torque directly at the internal combustion engine. The torque demand value is determined from the existing intermediate circuit voltage by using a characteristic stored in the inverter or in the higher level controller.

Description

Die Erfindung betrifft ein Verfahren zur Steuerung von Elektrofahrzeugen mit Verbrennungsmotor und ungeregeltem Generator gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a method for controlling Electric vehicles with combustion engines and uncontrolled Generator according to the preamble of claim 1.

Elektrofahrzeuge mit Verbrennungsmotor gewinnen zuneh­ mend an Bedeutung wegen der Umweltverträglichkeit sowie der Kombination der Vorteile mehrerer Antriebsquellen, übli­ cherweise eines Elektro- und eines Dieselmotors. Derartige Antriebskonzepte werden insbesondere bei öffentlichen Ver­ kehrsmitteln, beispielsweise bei Stadtbussen eingesetzt.Electric vehicles with combustion engines are increasing important because of the environmental compatibility and the Combining the advantages of multiple drive sources, übli an electric and a diesel engine. such Drive concepts are used especially in public ver sweeping equipment, used for example in city buses.

Die Spannung des Stromgenerators ist von der Drehzahl, der Last und der Magnettemperatur abhängig. Die üblicher­ weise verwendeten Antriebsmotoren (Asynchronmotoren mit Wechselrichter) benötigen je nach Leistung und Drehzahl eine entsprechende Zwischenkreisspannung. Der Wunsch des Fahrers nach Antriebsmoment wird deshalb zuerst in einen Sollwert für die Zwischenkreisspannung umgesetzt.The voltage of the power generator is from the speed, the load and the magnet temperature. The more common as used drive motors (asynchronous motors with Depending on the power and speed a corresponding DC link voltage. The wish of the Driver's drive torque is therefore first in one Setpoint for the DC link voltage implemented.

Aus diesem Sollwert und den Daten des Generators wird nach dem Stand der Technik eine Solldrehzahl ermittelt, wobei der Sollwert je nach Generatortemperatur korrigiert und angepaßt wird. Außerdem erfordern die Drehzahldynamik des Verbrennungsmotors sowie sonstige Ungenauigkeiten bei der Erfassung des Lastzustandes umfangreiche Korrekturen und teilweise Reduzierungen der möglichen Fahrleistungen. From this setpoint and the data of the generator determined a target speed according to the prior art, the setpoint being corrected depending on the generator temperature and is adjusted. They also require speed dynamics the internal combustion engine and other inaccuracies extensive corrections to the recording of the load condition and partial reductions in possible mileage.  

Des weiteren muss die maximale Leistungsaufnahme der Nebenantriebe bei der Festlegung der maximalen Fahrleistung eingerechnet werden, d. h. der Fahrantrieb fährt immer - auch im Winter - mit einem um die Leistungsaufnahme der Klimaanlage reduzierten Wert.Furthermore, the maximum power consumption of the Power take-offs when determining the maximum mileage be included, d. H. the drive always runs - even in winter - with one for the power consumption of the Air conditioning reduced value.

Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, ein Verfahren zur Steuerung eines Elektrofahr­ zeugs mit Verbrennungsmotor anzugeben, welches die obenge­ nannten Nachteile vermeidet und den Wunsch nach Antriebsmo­ ment möglichst präzise, ohne umfangreiche Korrekturen rea­ lisiert.The present invention is therefore based on the object based on a method for controlling an electric vehicle Stuff with an internal combustion engine to specify the above mentioned disadvantages avoided and the desire for drive mo ment as precisely as possible, without extensive corrections lisiert.

Diese Aufgabe wird durch die Merkmale des Patentan­ spruchs 1 gelöst. Weitere Ausgestaltungen und Varianten gehen aus den Unteransprüchen hervor.This task is accomplished through the features of the patent spell 1 solved. Other designs and variants emerge from the subclaims.

Demnach wird vorgeschlagen, den Fahrerwunsch nach An­ triebsmoment direkt an den Verbrennungsmotor vorzugeben und den Drehmomentsollwert aus der bestehenden Zwischen­ kreisspannung nach einer Kennlinie im Wechselrichter oder in der übergeordneten Steuerung zu ermitteln.Accordingly, it is proposed to change the driver's request to specify the drive torque directly to the internal combustion engine and the torque setpoint from the existing intermediate circuit voltage according to a characteristic curve in the inverter or to be determined in the higher-level control.

Ein Vorteil des erfindungsgemäßen Verfahrens besteht darin, dass Unterschiede in der Drehzahldynamik des Ver­ brennungsmotors nicht erfaßt und korrigiert werden mtissen, da die Leistungsabnahme der Radmotoren von der Zwischen­ kreisspannung abhängig ist.There is an advantage of the method according to the invention in that differences in the speed dynamics of the ver internal combustion engine must not be recorded and corrected, since the power loss of the wheel motors from the intermediate circuit voltage is dependent.

Außerdem können höhere Spannungen und damit höhere Leistungen auch bei kaltem Generator genutzt werden oder bei gleichen Leistungen kann die Verbrennungsmotordrehzahl gesenkt werden. Dies resultiert in einem geringeren spezi­ fischen Kraftstoffverbrauch.In addition, higher voltages and thus higher voltages Services can also be used when the generator is cold or at the same power, the engine speed  be lowered. This results in a lower spec fish fuel consumption.

Gemäß der Erfindung werden Unterschiede in der Lei­ stungsaufnahme der Nebenantriebe, besonders der Klimaanla­ ge, automatisch durch eine Reduzierung der Antriebsleistung ausgeglichen.According to the invention, differences in lei Power take-up of the power take-offs, especially the air conditioning automatically by reducing the drive power balanced.

Die Erfindung wird im folgenden anhand der Zeichnung näher erläutert.The invention is described below with reference to the drawing explained in more detail.

In dieser stellen dar:In this represent:

Fig. 1 ein Blockschaltbild des Verfahrens gemäß der vorliegenden Erfindung und Fig. 1 is a block diagram of the method according to the present invention and

Fig. 2 eine Leistungs-/Spannungskennlinie zur Ermittlung des Drehmomentsollwertes aus der bestehenden momentanen Zwischenkreisspan­ nung. Fig. 2 is a power / voltage characteristic curve for determining the torque setpoint from the existing instantaneous DC link voltage.

Gemäß Fig. 1 wird der Fahrerwunsch nach Drehmoment direkt an den Verbrennungsmotor vorgegeben. Der entspre­ chende Sollwert für das Drehmoment wird erfindungsgemäß gemäß einer Kennlinie als Funktion der aktuellen Zwischen­ kreisspannung ermittelt. Parallel dazu wird die Antriebsmo­ mentanforderung in der Steuerung oder im Wechselrichter in einen Drehmomentsollwert umgerechnet und mit dem aus der Kennlinie ermittelten Drehmomentsollwert verglichen, wobei der kleinere der beiden Werte verwendet wird.According to Fig. 1 of the driver's wish for torque is given directly to the internal combustion engine. The corresponding target value for the torque is determined according to the invention according to a characteristic curve as a function of the current intermediate circuit voltage. At the same time, the drive torque request in the controller or in the inverter is converted into a torque setpoint and compared with the torque setpoint determined from the characteristic curve, the smaller of the two values being used.

Der Sollwert für den Verbrennungsmotor wird über Spannungs­ begrenzer geführt, um unzulässige Spannungen im Zwischen­ kreis zu verhindern. Dies kann beispielsweise beim Ausfall von einem oder mehreren Radantrieben auftreten. The setpoint for the internal combustion engine is over voltage limiter led to inadmissible tensions in between prevent circle. For example, in the event of a failure occur from one or more wheel drives.  

Der vom Verbrennungsmotor angetriebene Generator erzeugt eine Wechselspannung. Der Gleichrichter wandelt diese in eine Gleichspannung um. Aus diesem Gleichspannungssystem erzeugt der Wechselrichter ein Drehstromsystem mit varia­ bler Spannung und Frequenz. Aus den Informationen über Sollwert-Drehmoment und der Elektromotordrehzahl ermittelt und regelt der Wechselrichter Frequenz und Spannung ent­ sprechend.The generator driven by the internal combustion engine generates an AC voltage. The rectifier converts this into a DC voltage around. From this DC voltage system the inverter creates a three-phase system with varia voltage and frequency. From the information on Setpoint torque and the motor speed determined and the inverter regulates frequency and voltage speaking.

Diese Kennlinie kann in der Steuerung oder im Wechsel­ richter abgelegt sein.This characteristic can be in the control system or alternately to be filed away.

Ein Beispiel für die Leistungs-/Zwischenkreisspan­ nungs-Kennlinie ist Fig. 2 gezeigt.An example of the power / DC link voltage characteristic is shown in FIG. 2.

Durch das hier vorgestellte Verfahren lassen sich die Korrekturen, die nach der Vorgabe eines Spannungssollwertes für den Zwischenkreis notwendig sind vermeiden.With the method presented here, the Corrections after the specification of a voltage setpoint are necessary for the DC link.

Claims (4)

1. Verfahren zur Steuerung für Elektrofahrzeuge mit Verbrennungsmotor, dadurch gekennzeichnet, dass die Antriebsmomentanforderung direkt an den Verbren­ nungsmotor vorgegeben wird.1. Control method for electric vehicles with an internal combustion engine, characterized in that the drive torque request is specified directly to the internal combustion engine. 2. Verfahren nach Anspruch 1, dadurch gekenn­ zeichnet, dass der Drehmomentsollwert aus der bestehenden Zwischenkreisspannung nach einer Kennlinie er­ mittelt wird.2. The method according to claim 1, characterized records that the torque setpoint from the existing DC link voltage according to a characteristic curve is averaged. 3. Verfahren nach Anspruch 2, dadurch gekenn­ zeichnet, dass die Kennlinie im Wechselrichter oder in der übergeordneten Steuerung abgelegt wird.3. The method according to claim 2, characterized records that the characteristic curve in the inverter or stored in the higher-level control. 4. Verfahren nach Anspruch 2, dadurch gekenn­ zeichnet, daß die Antriebsmomentanforderung par­ allel in einen Drehmomentsollwert umgerechnet und mit dem Drehmomentsollwert nach Anspruch 2 verglichen wird, wobei der kleinere der beiden Werte verwendet wird.4. The method according to claim 2, characterized records that the drive torque request par allel converted into a torque setpoint and with the Torque setpoint is compared according to claim 2, wherein the smaller of the two values is used.
DE10044954A 2000-09-12 2000-09-12 Controlling electric vehicle with internal combustion engine and unregulated generator involves specifying demanded drive torque directly at internal combustion engine Withdrawn DE10044954A1 (en)

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DE10044954A DE10044954A1 (en) 2000-09-12 2000-09-12 Controlling electric vehicle with internal combustion engine and unregulated generator involves specifying demanded drive torque directly at internal combustion engine

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DE10044954A DE10044954A1 (en) 2000-09-12 2000-09-12 Controlling electric vehicle with internal combustion engine and unregulated generator involves specifying demanded drive torque directly at internal combustion engine

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012171683A3 (en) * 2011-06-17 2013-03-28 Robert Bosch Gmbh Method for operating an electrical power supply arrangement

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19711701A1 (en) * 1997-03-20 1998-04-30 Still Gmbh Transmitting AC power in truck esp. fork lift truck with IC engine and electric drive motor
DE19633194C2 (en) * 1996-08-17 1998-09-17 Daimler Benz Ag Serial hybrid drive, especially for a motor vehicle

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19633194C2 (en) * 1996-08-17 1998-09-17 Daimler Benz Ag Serial hybrid drive, especially for a motor vehicle
DE19711701A1 (en) * 1997-03-20 1998-04-30 Still Gmbh Transmitting AC power in truck esp. fork lift truck with IC engine and electric drive motor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012171683A3 (en) * 2011-06-17 2013-03-28 Robert Bosch Gmbh Method for operating an electrical power supply arrangement

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