WO2005043720A1 - Moteurs electriques a vitesse variable - Google Patents

Moteurs electriques a vitesse variable Download PDF

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Publication number
WO2005043720A1
WO2005043720A1 PCT/AU2004/001495 AU2004001495W WO2005043720A1 WO 2005043720 A1 WO2005043720 A1 WO 2005043720A1 AU 2004001495 W AU2004001495 W AU 2004001495W WO 2005043720 A1 WO2005043720 A1 WO 2005043720A1
Authority
WO
WIPO (PCT)
Prior art keywords
controller
motor
assembly
circuit
housing
Prior art date
Application number
PCT/AU2004/001495
Other languages
English (en)
Inventor
Mehran Ektesabi
Hasib Felic
Jack Gringlas
Original Assignee
Cmg Technology Pty Ltd
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 Cmg Technology Pty Ltd filed Critical Cmg Technology Pty Ltd
Priority to AU2004307193A priority Critical patent/AU2004307193B2/en
Publication of WO2005043720A1 publication Critical patent/WO2005043720A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/30—Structural association with control circuits or drive circuits
    • H02K11/33—Drive circuits, e.g. power electronics
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/14—Arrangements for cooling or ventilating wherein gaseous cooling medium circulates between the machine casing and a surrounding mantle

Definitions

  • This invention relates to variable speed electric motors.
  • Three-phase induction electric motors can provide variable speed by incorporating a controller which controls the voltage and frequency of the power to motor.
  • Conventional 3Ph electric motors can be made to have variable speed control, even if only a single-phase power supply is available, by providing a VVVF (variable voltage variable frequency) controller circuit mounted in a box which is separate to the motor.
  • the box for example can be located separately from the motor and connected thereto by cabling or can be mounted to the motor, e.g. on top or by the side of the motor. It can be difficult or inconvenient to locate or mount or accommodate or protect a motor and its separate, sometimes bulky associated controller apparatus.
  • a variable speed electric motor including: a motor assembly having a stator and a rotor with a motor shaft mounted for rotation in bearings so as to be rotatable within the stator of the motor; a cooling fan arranged to direct cooling air flow over or through the motor assembly; a casing enclosing the motor assembly; a controller circuit for controlling in a selectively variable manner the supply of power to the motor assembly so as to selectively control the speed of rotation of the rotor, the controller circuit " including numerous components thereof which are mounted to form a controller assembly; and a controller housing in which the controller assembly is located, the controller housing being mounted within the casing of the electric motor and being located and arranged so that the cooling fan causes a cooling air flow past or through the controller housing so as to provide a cooling effect for the controller assembly therein.
  • the controller assembly may include at least one heat generating circuit component of the controller circuit mounted and located in direct heat exchange relationship with, or in thermal contact with, the controller housing so that heat generated within that circuit component is conducted to the controller housing for dissipation.
  • the or each heat generating component may include a surface or surfaces in abutting heat exchange contact with complementary surface(s) of the controller housing so that the controller housing is a heat sink for the heat generating components).
  • the cooling fan is located within the casing and is driven by the motor shaft, the controller housing being located between the fan and the motor assembly with the motor shaft extending axially from the motor assembly through the controller housing to the fan, whereby cooling air flow generated by the fan provides a cooling effect for the controller housing and for the motor assembly.
  • the casing preferably includes a fan cowl which encloses both the coolmg fan and the controller housing, the cowl also providing an annular outlet for coolmg air flow to be directed over the outside of the casing surrounding the motor assembly.
  • the controller circuit includes a speed input means located externally of the casing of the motor and through which a speed control signal or command is input from externally to the controller circuit.
  • the speed input means comprises a potentiometer and associated control knob which a user can turn to adjust the potentiometer and thereby provide a speed input command to the controller circuit.
  • the speed input means includes a remote automatic speed controller such as a computer which is operative to input speed control signals to the controller circuit in a predetermined or programmed manner.
  • the controller housing comprises a metal housing mounted adjacent an intermediate endshield of the motor assembly with the motor shaft extending from the motor assembly at one side of the endshield through the endshield and extending axially through the controller housing with the components of the controller circuit located therein, the cooling fan forcing cooling air onto and over the controller housing before reaching and providing cooling effect for the motor assembly.
  • the controller assembly preferably includes a circuit board to which the components of the controller circuit located within the controller housing are mounted with the motor shaft extending axially through the circuit board.
  • the circuit board may have at least one heat generating circuit component of the controller circuit mounted at one side of the circuit board and in abutting heat exchange relationship with the inside surface of the metal controller housing, other components of the controller circuit being mounted at the opposite side of the circuit board and facing the endshield of the motor assembly.
  • Components of the controller assembly may be encapsulated within a resin for protecting the components against physical and/or chemical deleterious conditions, such as dirty or high-humidity, or aerosol containing, or corrosive atmospheres.
  • Fig. 1 is a side, partially sectional, view of an electric motor according to an embodiment of the present invention
  • Fig. 2 is a front view of the motor of Fig. 1
  • Fig. 3 is a diagram of the functional units of a controller circuit for use in the motor of the present invention.
  • the motor 10 depicted in Figs. 1 and 2 is a three phase induction motor having a motor assembly 11 having a stator 12 and a rotor 13 with a motor shaft 15 extending axially and mounted in bearings 16, 17 so that the rotor 13 is rotatable within the stator 12,
  • a casing 25 encloses the motor assembly 11.
  • a cooling fan 20 is mounted for rotation by the motor shaft 15 by direct mounting to the shaft. The fan 20 in use directs cooling air flow over the motor assembly U by providing the fan 20 within a cowl 21 which is part of the casing 25.
  • the cowl 21 is arranged to discharge cooling air flow through the annular outlet 22 along the outside surface of the cylindrical part 26 of the casing 25 which encloses the motor assembly 11.
  • the fan 20 could be driven indirectly by the motor shaft 15 e.g. through a gear mechanism, instead of being directly mounted as in the drawings.
  • the fan 20 could be a separately powered and operated component
  • the bearing 16 is mounted by an intermediate back endshield 30 located at one end of the motor assembly 11 and the bearing 17 is mounted by the front endshield 33 forming part of the casing 25 so that the drive end 18 of the shaft 15 projects beyond the endshield 33.
  • a controller circuit 40 is shown schematically in Fig.
  • the controller circuit 40 includes numerous components which can include, as illustrated in Fig. 3, power input conditioning components including EMC filter 65, charging circuit 66 t rectifier 67, and DC link filter 68operative to produce from a sbgle phase AC input 64 a DC power supply to the power module 70.
  • the power module can be an integrated power module operative to generate a variable three phase power output for the three phase induction motor 10.
  • the power module 70 is selectively variably controlled by a digital controller 71. DC power supply voltages for the power module 70 and digital controller 71 can be provided by the switch mode power supply 72.
  • the digital controller 71 operates in response to an external speed input signal on line 74.
  • the speed input signal may be provided by an operator of the motor by means of an external or peripheral input means 41.
  • the input means 41 comprises a potentiometer provided within the terminal box 42 and having for example a rotary control knob 43 which the operator turns to operate the potentiometer and thereby provide a speed input signal or speed command on line 74 to the digital controller 71.
  • the speed input signal to the digital controller may be provided by an associated control computer running a motor control program.
  • the controller circuit 40 includes a number of components thereof which are mounted to form a controller assembly 50 (Fig. 1). A-s many of the controller circuit components as possible are preferably mounted together to form the controller assembly 50.
  • a controller housing 51 is provided in which the controller assembly 50 is located.
  • the controller housing 51 is mounted within the casing 25 of the motor, namely within the cowl 21 of the casing in the particular illustrated embodiment.
  • the controller housing 51 is located and arranged so that the fan 21 generates a cooling air flow over the controller housing 51 so as to provide a cooling effect for the controller assembly 50 therein.
  • the controller assembly 50 includes at least one heat generating circuit component of the controller circuit 40 mounted and located in direct heat exchange or thermal contact with the controller housing 51 so that heat generated within that circuit component is conducted to the controller housing for dissipation.
  • the rectifier 67 and the power module 70 are the two units with maximum heat generation and which desirably are actively cooled.
  • the heat generating components illustrated schematically by the reference numeral 52 in Fig. 1, are located in direct heat exchange or thermal contact with the housing 51.
  • tiie components 52 include a surface or surfaces in abutting heat exchange contact with an inside complementary surface 53 of the housing 51 so that the housing is a heat sink for the heat generating components 52.
  • the controller housing 51 comprises a metal (or other thermally conductive) housing mounted adjacent to the endshield 30 of the motor assembly 11.
  • the motor shaft 15 extends from the motor assembly 11 through the endshield 30 and thence axially through the controller housing 51 having the components constituting the controller assembly 50 of the controller circuit 40 located therein.
  • the controller assembly 50 within the controller housing 51 includes a circuit board 55 to which the components of the controller circuit located in the housing arc mounted.
  • the motor shaft 15 extends axially through the circuit board 55.
  • the circuit board 55 may be an annular board having a central hole through which the motor shaft 15 extends.
  • the heat generating components 52 can be mounted at one side of the board 55 for heat conducting direct contact with the housing 51 while other components that are not as susceptible to undesirable heat effects can be mounted to the side of the circuit board facing the endshield 30.
  • the components on the circuit board can if desired be encapsulated in resin for protection against physical damage and contamination during assembly and during use of the motor.
  • the speed input control means comprising the potentiometer and associated control knob 43 mounted within box 42 can be mounted as shown to the top of the motor for direct operator control of the speed.
  • a capacitor box 60 having electrolytic capacitors 61 located therein can be mounted externally because these circuit components can be relatively bulky,
  • all other controller circuit components can be located internally of the motor casing 25 as described and illustrated.
  • the motor according to the preferred embodiment particularly described and illustrated herein can provide a compact variable speed motor even where only single phase AC supply is available. The only discernible difference from a conventional induction motor may be a slight elongation of the fan cowl 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Cooling System (AREA)

Abstract

L'invention concerne un moteur électrique à vitesse variable comprenant un ensemble moteur (11), un ventilateur de refroidissement (20) destiné à diriger un flux d'air de refroidissement à travers l'ensemble moteur, un carter (25) entourant l'ensemble moteur, et un circuit de commande (40) destiné à commander de manière variable et sélective la vitesse de rotation du rotor (13). Ce circuit de commande comprend de nombreuses composantes assemblées pour former un ensemble de commande (50) situé à l'intérieur d'un boîtier de commande (51) assemblé dans le carter du moteur électrique de façon que le ventilateur de refroidissement fasse passer un flux d'air de refroidissement devant ou à travers le boîtier de commande de façon à obtenir un effet de refroidissement de l'ensemble de commande. Des composantes de circuits générant de la chaleur (52) du circuit de commande sont assemblées et dans une relation directe d'échange de chaleur avec le boîtier de commande qui devient un puits thermique. Le boîtier de commande comprend un boîtier métallique assemblé adjacent à un flasque intermédiaire (30) de l'ensemble moteur, l'arbre du moteur (15) s'étendant à partir de l'ensemble moteur d'un côté du flasque à travers ce flasque, et s'étendant axialement à travers le boîtier de commande dans lequel sont situés les composantes du circuit de commande.
PCT/AU2004/001495 2003-10-30 2004-10-29 Moteurs electriques a vitesse variable WO2005043720A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2004307193A AU2004307193B2 (en) 2003-10-30 2004-10-29 Variable speed electric motors

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2003259599 2003-10-30
AU2003259599A AU2003259599A1 (en) 2003-10-30 2003-10-30 Variable speed electric motors

Publications (1)

Publication Number Publication Date
WO2005043720A1 true WO2005043720A1 (fr) 2005-05-12

Family

ID=34528627

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2004/001495 WO2005043720A1 (fr) 2003-10-30 2004-10-29 Moteurs electriques a vitesse variable

Country Status (2)

Country Link
AU (1) AU2003259599A1 (fr)
WO (1) WO2005043720A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1792805B1 (fr) * 2005-11-30 2008-07-09 Jungheinrich Aktiengesellschaft Unité de propulsion et de direction pour un chariot de élévateur
US7977832B2 (en) 2008-05-21 2011-07-12 Nidec Motor Corporation Cooling system for a motor and associated electronics
CN104617708A (zh) * 2015-03-03 2015-05-13 常州东本驱动技术有限公司 散热性良好的一体式电机控制器
CN104638841A (zh) * 2011-01-27 2015-05-20 株式会社日立产机系统 旋转电机组装体
WO2018007771A1 (fr) * 2016-07-08 2018-01-11 Valeo Systemes De Controle Moteur Équipement électrique comprennant électromachine et module de commande
WO2019133780A1 (fr) * 2017-12-28 2019-07-04 Abb Schweiz Ag Électronique de puissance tournante dans une excitation de machine synchrone
WO2020115417A1 (fr) * 2018-12-05 2020-06-11 Safran Electrical & Power Moteur electrique intelligent compact

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19606487A1 (de) * 1996-02-22 1997-08-28 Bosch Gmbh Robert Gebläsemotor
JPH1127903A (ja) * 1997-07-03 1999-01-29 Hitachi Ltd 制御装置一体型電動機
JPH11341743A (ja) * 1998-05-27 1999-12-10 Hitachi Ltd 回転電気機械
DE19949322C1 (de) * 1999-10-13 2001-01-25 Temic Auto Electr Motors Gmbh Kühlgebläse, insbesondere Kühlerventilator für Kraftfahrzeuge
WO2002071580A1 (fr) * 2001-03-02 2002-09-12 Robert Bosch Gmbh Machine electrique a puce de reglage a refroidissement par air
FR2830215A1 (fr) * 2001-10-01 2003-04-04 Still & Saxby Sarl Dispositif de refroidissement pour une unite motrice

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19606487A1 (de) * 1996-02-22 1997-08-28 Bosch Gmbh Robert Gebläsemotor
JPH1127903A (ja) * 1997-07-03 1999-01-29 Hitachi Ltd 制御装置一体型電動機
JPH11341743A (ja) * 1998-05-27 1999-12-10 Hitachi Ltd 回転電気機械
DE19949322C1 (de) * 1999-10-13 2001-01-25 Temic Auto Electr Motors Gmbh Kühlgebläse, insbesondere Kühlerventilator für Kraftfahrzeuge
WO2002071580A1 (fr) * 2001-03-02 2002-09-12 Robert Bosch Gmbh Machine electrique a puce de reglage a refroidissement par air
FR2830215A1 (fr) * 2001-10-01 2003-04-04 Still & Saxby Sarl Dispositif de refroidissement pour une unite motrice

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Derwent World Patents Index; Class V06, AN 1999-174188 *
DATABASE WPI Derwent World Patents Index; Class V06, AN 2000-213225 *

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1792805B1 (fr) * 2005-11-30 2008-07-09 Jungheinrich Aktiengesellschaft Unité de propulsion et de direction pour un chariot de élévateur
US7977832B2 (en) 2008-05-21 2011-07-12 Nidec Motor Corporation Cooling system for a motor and associated electronics
US8350423B2 (en) 2008-05-21 2013-01-08 Nidec Motor Corporation Cooling system for a motor and associated electronics
CN104638841B (zh) * 2011-01-27 2018-01-23 株式会社日立产机系统 旋转电机组装体
CN104638841A (zh) * 2011-01-27 2015-05-20 株式会社日立产机系统 旋转电机组装体
EP2482428A3 (fr) * 2011-01-27 2015-08-19 Hitachi Industrial Equipment Systems Co., Ltd. Ensemble formant machine rotative électrique
EP3301789A1 (fr) * 2011-01-27 2018-04-04 Hitachi Industrial Equipment Systems Co., Ltd. Ensemble formant machine rotative électrique
CN104617708A (zh) * 2015-03-03 2015-05-13 常州东本驱动技术有限公司 散热性良好的一体式电机控制器
FR3053853A1 (fr) * 2016-07-08 2018-01-12 Valeo Systemes De Controle Moteur Equipement electrique
WO2018007771A1 (fr) * 2016-07-08 2018-01-11 Valeo Systemes De Controle Moteur Équipement électrique comprennant électromachine et module de commande
WO2019133780A1 (fr) * 2017-12-28 2019-07-04 Abb Schweiz Ag Électronique de puissance tournante dans une excitation de machine synchrone
WO2020115417A1 (fr) * 2018-12-05 2020-06-11 Safran Electrical & Power Moteur electrique intelligent compact
FR3089716A1 (fr) * 2018-12-05 2020-06-12 Safran Electrical & Power Moteur électrique intelligent compact

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