WO2012025086A2 - Procédé de démarrage d'un moteur électrique dans un engin de travail hydraulique - Google Patents

Procédé de démarrage d'un moteur électrique dans un engin de travail hydraulique Download PDF

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Publication number
WO2012025086A2
WO2012025086A2 PCT/DE2011/001531 DE2011001531W WO2012025086A2 WO 2012025086 A2 WO2012025086 A2 WO 2012025086A2 DE 2011001531 W DE2011001531 W DE 2011001531W WO 2012025086 A2 WO2012025086 A2 WO 2012025086A2
Authority
WO
WIPO (PCT)
Prior art keywords
electric motor
starting
hydraulic pump
stage
flow rate
Prior art date
Application number
PCT/DE2011/001531
Other languages
German (de)
English (en)
Other versions
WO2012025086A3 (fr
Inventor
Herbert Ziplies
Sebastian Fillinger
Original Assignee
Bucyrus Hex Gmbh
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 Bucyrus Hex Gmbh filed Critical Bucyrus Hex Gmbh
Priority to AU2011295484A priority Critical patent/AU2011295484A1/en
Priority to EP11791194.1A priority patent/EP2601411A2/fr
Priority to CN201180048168.4A priority patent/CN103154513B/zh
Priority to US13/813,555 priority patent/US20130171007A1/en
Publication of WO2012025086A2 publication Critical patent/WO2012025086A2/fr
Publication of WO2012025086A3 publication Critical patent/WO2012025086A3/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/2058—Electric or electro-mechanical or mechanical control devices of vehicle sub-units
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/2058—Electric or electro-mechanical or mechanical control devices of vehicle sub-units
    • E02F9/2062—Control of propulsion units
    • E02F9/207—Control of propulsion units of the type electric propulsion units, e.g. electric motors or generators
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/2058—Electric or electro-mechanical or mechanical control devices of vehicle sub-units
    • E02F9/2062—Control of propulsion units
    • E02F9/2075—Control of propulsion units of the hybrid type
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2221—Control of flow rate; Load sensing arrangements
    • E02F9/2232—Control of flow rate; Load sensing arrangements using one or more variable displacement pumps
    • E02F9/2235—Control of flow rate; Load sensing arrangements using one or more variable displacement pumps including an electronic controller
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2278—Hydraulic circuits
    • E02F9/2296—Systems with a variable displacement pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/002—Hydraulic systems to change the pump delivery
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/02—Stopping, starting, unloading or idling control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
    • H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
    • H02P1/26—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual polyphase induction motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2203/00—Motor parameters
    • F04B2203/02—Motor parameters of rotating electric motors
    • F04B2203/0201—Current
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2203/00—Motor parameters
    • F04B2203/02—Motor parameters of rotating electric motors
    • F04B2203/0202—Voltage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2205/00—Fluid parameters
    • F04B2205/09—Flow through the pump

Definitions

  • the invention relates to a method for starting at least one asynchronous electric motor of a large hydraulic excavator with a service weight> 100 t according to the generic part of the first claim.
  • DE 198 04 043 A1 discloses a start-up circuit with start-up transformer for a three-phase motor, the starting circuit comprises contactors for setting a first start-up stage for starting the motor, with the contactors at least one further starting stage is adjustable, with the contactors further a Stage is adjustable for normal operation of the engine and wherein an electronic control device is provided for controlling the switching to the various stages in accordance with a determined motor current.
  • WO 2008/095525 A1 describes an electrohydraulic control arrangement for actuating a hydraulic consumer, comprising a fluid pump which can be adjusted with respect to its displacement volume, a fluid pump Driving the fluid pump to this coupled variable speed electric drive and a pressure detecting means for detecting a fluid pressure. It is provided a main control loop whose actuator is a speed control member of the electric drive and by the fluid pressure and / or a downstream control variable is detected and regulated, by means of a Maustellkette a displacement volume actuator of the fluid pump, in response to the detected fluid pressure, can be controlled.
  • the aim of the subject invention is to provide a method for starting at least one electric motor of a hydraulically operated large hydraulic excavator, which no longer has the indicated disadvantages, so that an approximately load-free starting of the at least one electric motor can be brought about.
  • the respective asynchronous electric motor is, according to another idea of the invention, put into operation using the known Korndorfer circuit.
  • the method according to the invention should advantageously be used in the area of an electrohydraulically driven large hydraulic excavator with a service weight of> 100 t.
  • the above-mentioned disadvantages are no longer given with the use of the subject invention.
  • the delivery rate of the hydraulic pump has the value 0 in each of the three starting phases of the electric motor. This also applies if the electric motor is already running at full speed. Only by actuating an actuator, e.g. Manual deflection of a hand lever, the advantageously designed as an axial piston pump hydraulic pump is pressurized via a pilot valve and only then is the flow rate increased to a value> 0 up to the maximum flow rate.
  • an actuator e.g. Manual deflection of a hand lever
  • Figures 1 to 5 are schematic diagrams of a circuit diagram for commissioning a hydraulic drive with electric motor.
  • FIG 1 shows the basic position (inoperative position), in which the voltage is present at an open switch 1 via the line 8.
  • the delivery quantity V of the hydraulic pump 13 has the value 0.
  • FIG. 2 shows the first switching stage of the starting process of an electric motor 6 of a hydraulic excavator not shown with a service weight> 100 t.
  • the switching elements 1 and 3 are closed. Due to the closed switching element 1, the electric current flows via electrical lines 8 and 9 to a transformer 2.
  • the switching element 3 to the neutral point 5 of the transformer 2 is closed. This has the consequence that at the tapping point 7 of the transformer 2, an electrical partial flow is discharged via electrical lines 10 and 12 to the electric motor 6.
  • the delivery rate V of the hydraulic pump 13 designed as an axial piston pump in this example also has the value 0.
  • FIG. 3 shows the second switching stage of the starting process.
  • the switching element 3 is opened to the star point 5 of the transformer 2.
  • the upper part of the transformer 2 now acts as a throttle.
  • the flow rate V of the hydraulic pump 13 remains at the value 0.
  • Figure 4 shows the third switching stage of the starting process of the electric motor 6. After a predetermined time, the switching element 4 is closed by a control unit 16 not described in detail. The nominal current is absorbed directly by the electric motor 6 via the closed switches 1 and 4. The electric motor is already applied in this switching position with its rated voltage. Also in this last switching stage, the flow rate V of the hydraulic pump 13 remains at the value 0.
  • Figure 5 now shows the addition of trained as axial piston pump hydraulic pump 13. The hand lever 22 of the actuator 21 is deflected and thus closes the switch 18.
  • a command sequence is triggered in the not further described electronic control unit 16, via the output 7 of the control unit 16 electronically controls a 15 such that a hydraulic flow, which is supported by an auxiliary pump 14, applied via the proportional valve 15 designed as a variable displacement hydraulic pump 13.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Operation Control Of Excavators (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

L'invention concerne un procédé de démarrage d'au moins un moteur électrique asynchrone d'une grande excavatrice hydraulique ayant un poids en ordre de marche supérieur à 100 t, comportant un entraînement électrohydraulique. Selon le procédé, le moteur électrique respectif est amené d'une position d'arrêt vers une position de fonctionnement au moyen d'un processus de démarrage de moteur en trois étapes, le débit volumétrique d'au moins une pompe hydraulique se trouvant en liaison fonctionnelle avec le moteur électrique étant réglé au débit de refoulement V = 0 au cours de toutes les étapes de démarrage du moteur électrique, et le débit de refoulement V de la pompe hydraulique étant régulé à une valeur supérieure à 0 après la dernière étape de démarrage du moteur électrique par actionnement d'un actionneur.
PCT/DE2011/001531 2010-08-04 2011-07-29 Procédé de démarrage d'un moteur électrique dans un engin de travail hydraulique WO2012025086A2 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AU2011295484A AU2011295484A1 (en) 2010-08-04 2011-07-29 Method for starting an electric motor in a hydraulically operated working machine
EP11791194.1A EP2601411A2 (fr) 2010-08-04 2011-07-29 Procédé de démarrage d'un moteur électrique dans un engin de travail hydraulique
CN201180048168.4A CN103154513B (zh) 2010-08-04 2011-07-29 用于启动液压运行的工作机械中的电机的方法
US13/813,555 US20130171007A1 (en) 2010-08-04 2011-07-29 Method for starting an electric motor in a hydraulically operated working machine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010033346A DE102010033346B3 (de) 2010-08-04 2010-08-04 Verfahren zum Starten eines Elektromotors in einer hydraulisch betriebenen Arbeitsmaschine
DE102010033346.8 2010-08-04

Publications (2)

Publication Number Publication Date
WO2012025086A2 true WO2012025086A2 (fr) 2012-03-01
WO2012025086A3 WO2012025086A3 (fr) 2012-04-19

Family

ID=45471321

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2011/001531 WO2012025086A2 (fr) 2010-08-04 2011-07-29 Procédé de démarrage d'un moteur électrique dans un engin de travail hydraulique

Country Status (6)

Country Link
US (1) US20130171007A1 (fr)
EP (1) EP2601411A2 (fr)
CN (1) CN103154513B (fr)
AU (1) AU2011295484A1 (fr)
DE (1) DE102010033346B3 (fr)
WO (1) WO2012025086A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022120368A1 (de) 2022-08-11 2024-02-22 Wacker Neuson Linz Gmbh Hydraulik-Arbeitsfahrzeug mit einem Fahrzeugrahmen und einem Arbeitswerkzeug

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8602103U1 (de) 1986-01-28 1986-04-10 Liebherr-France S.A., Colmar-Cedex Hydraulikbagger
DE19804043A1 (de) 1997-02-04 1998-08-06 Helmut Dipl Ing Hinzen Anlaufschaltung mit Anlauftransformator für einen Drehstrom-Kurzschlußläufermotor
DE19831121A1 (de) 1998-07-11 2000-01-13 Helmut Hinzen Mehrstufige Anlaufschaltung mit Anlauftransformator für einen Drehstrom-Kurzschlußläufermotor
WO2008095525A1 (fr) 2007-02-08 2008-08-14 Robert Bosch Gmbh Système de contrôle électrohydraulique

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Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8602103U1 (de) 1986-01-28 1986-04-10 Liebherr-France S.A., Colmar-Cedex Hydraulikbagger
DE19804043A1 (de) 1997-02-04 1998-08-06 Helmut Dipl Ing Hinzen Anlaufschaltung mit Anlauftransformator für einen Drehstrom-Kurzschlußläufermotor
DE19831121A1 (de) 1998-07-11 2000-01-13 Helmut Hinzen Mehrstufige Anlaufschaltung mit Anlauftransformator für einen Drehstrom-Kurzschlußläufermotor
WO2008095525A1 (fr) 2007-02-08 2008-08-14 Robert Bosch Gmbh Système de contrôle électrohydraulique

Also Published As

Publication number Publication date
US20130171007A1 (en) 2013-07-04
WO2012025086A3 (fr) 2012-04-19
AU2011295484A1 (en) 2013-02-28
CN103154513B (zh) 2015-10-14
EP2601411A2 (fr) 2013-06-12
DE102010033346B3 (de) 2012-02-02
CN103154513A (zh) 2013-06-12

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