CN117203878A - Rotary electric machine - Google Patents

Rotary electric machine Download PDF

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Publication number
CN117203878A
CN117203878A CN202280028412.9A CN202280028412A CN117203878A CN 117203878 A CN117203878 A CN 117203878A CN 202280028412 A CN202280028412 A CN 202280028412A CN 117203878 A CN117203878 A CN 117203878A
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CN
China
Prior art keywords
stator
rotating electrical
electrical machine
frame
motor
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Pending
Application number
CN202280028412.9A
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Chinese (zh)
Inventor
P·阿米罗利
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Valeo Equipements Electriques Moteur SAS
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Valeo Equipements Electriques Moteur SAS
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Publication of CN117203878A publication Critical patent/CN117203878A/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • 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
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • 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
    • B60K6/22—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 apparatus, components or means specially adapted for HEVs
    • B60K6/26—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 apparatus, components or means specially adapted for HEVs characterised by the motors or the generators
    • 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
    • B60K6/22—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 apparatus, components or means specially adapted for HEVs
    • B60K6/38—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 apparatus, components or means specially adapted for HEVs characterised by the driveline clutches
    • B60K6/387—Actuated clutches, i.e. clutches engaged or disengaged by electric, hydraulic or mechanical actuating means
    • 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
    • B60K6/48—Parallel type
    • B60K6/485—Motor-assist type
    • 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
    • B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
    • B60K6/54—Transmission for changing ratio
    • B60K6/547—Transmission for changing ratio the transmission being a stepped gearing
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/006—Structural association of a motor or generator with the drive train of a motor vehicle
    • 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
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K2001/001—Arrangement or mounting of electrical propulsion units one motor mounted on a propulsion axle for rotating right and left wheels of this axle
    • 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
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K2001/008—Arrangement or mounting of electrical propulsion units with means for heating the electrical propulsion units
    • 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
    • B60K6/48—Parallel type
    • B60K2006/4825—Electric machine connected or connectable to gearbox input shaft
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
    • 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
    • Y02T10/64—Electric machine technologies in electromobility

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Windings For Motors And Generators (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The application relates to a rotating electrical machine (7), comprising: stator (10) comprising a multiphase electrical winding and rotor (12) rotatable about axis (X), the motor (7) being designed in such a way that the outer diameter (D) and the axial dimension (L) of the frame (15) of the stator (10) are in mm 2 The product in units satisfies the following relationship: (formula AA): R s representing the resistance of one phase of the stator electrical winding, I s Representation ofThe maximum effective value of the phase currents, and N represents the number of phases of the stator electrical winding.

Description

Rotary electric machine
Technical Field
The present application relates to a rotating electrical machine for a vehicle.
Background
The electric machine is, for example, a starter generator or an electric motor powered by a nominal voltage of 12V or 48V or even higher.
Such an electric machine may be incorporated into a hybrid or electric vehicle, such as a motor vehicle.
The loss of the motor is the sum of ohmic loss and iron loss.
It is desirable to design such motors to limit these losses to the greatest extent possible.
Disclosure of Invention
The object of the present application is to meet this need and according to one aspect thereof this object is achieved with a rotating electrical machine comprising:
stator comprising a multiphase electrical winding, and
a rotor rotatable about an axis of rotation,
the motor is configured such that the outer diameter (D) and the axial dimension (L) of the frame of the stator are in mm 2 The product in units satisfies the following relationship:
[ formula 1 ]
Wherein R is S The resistance of one phase, expressed in ohms (Ω),
I S the maximum root mean square value, expressed in amperes (a),
n represents the number of phases of the electrical winding of the stator.
The dissipation of motor losses can be considered to be proportional to the heat exchange surface of the motor, which depends on the product of the outer diameter of the frame of the stator of the motor and the axial dimension of the frame of the stator. The application therefore includes designing the product to limit losses in the motor.
Within the meaning of the application:
"axial" means "parallel to the axis of rotation of the shaft",
"radial" means "on a plane perpendicular to the axis of rotation of the shaft and along a line intersecting the axis of rotation",
"circumferential" means "moving in a plane perpendicular to and about the axis of rotation of the shaft", and
"nominal power" means the peak mechanical power available on the rotor shaft.
The rotating electrical machine may have a nominal supply voltage of 48V.
In all of the above, the rotor may include any number of pole pairs, such as four, six or eight pairs of poles.
The rotating electrical machine may have a nominal power of greater than or equal to 4kW, 8kW, 15kW, 25kW, or greater.
The motor may be a synchronous motor. The rotor may include a plurality of permanent magnets and does not include an electrical excitation winding. The rotor may be formed of a stack of laminated sheets in which the permanent magnets are located.
In all of the above, the multiphase electrical windings of the stator may be formed by wires or by conductive strips connected to each other. Each slot of the frame of the stator may receive a plurality of conductors, for example 2, 4 or 6.
In all of the above, the motor may comprise a circuit for cooling the stator, in which a fluid, such as air or a liquid, circulates. The liquid may be water or oil.
The rotor may be cooled by the same cooling circuit or another cooling circuit in which air or a liquid such as water or oil is circulated.
The application makes it possible to obtain a range of values for the outer diameter and axial dimensions of the frame of the stator of a target motor with different nominal powers, with a view to the dimensions of the known motor, the outer diameter of the frame of the stator and the axial dimensions of the frame being optimized with respect to the above-mentioned core losses, so as to optimize the core losses of motors with different nominal powers. As a variant, given the dimensions of the known motor, the outer diameter of the frame of the stator and the axial dimensions of this frame are optimized with respect to the above-mentioned core losses, the application makes it possible to obtain a range of other values for the outer diameter and axial dimensions of the frame of the stator of a target motor having the same nominal power, so as to optimize the core losses of a motor having the same nominal power.
Considering that the known rotating electrical machines (hereinafter indicated by the subscript "1") have the same optimized iron losses as the target rotating electrical machine to be designed (hereinafter indicated by the subscript "2"), each of these machines has, for example, electrical windings defining the stator of a double three-phase system, the following equation is derived:
[ formula 2 ]
Considering the core loss P of the target motor f The following is derived:
[ formula 3 ]
Knowing the loss P of a known motor 1 Between 5,000w and 6,000W, the following equation is obtained:
[ formula 4 ]
[ formula 5 ]
From this the following equation is derived:
[ formula 6 ]
[ formula 7 ]
Further, by combining [ formula 2 ] and [ formula 3 ], the following is obtained
[ formula 8 ]
By combining [ formula 8 ] and [ formula 6 ], and [ formula 8 ] and [ formula 7 ], as a result,
[ formula 9 ]
[ formula 10 ]
For [ equation 10 ], 5,000w is used as the denominator of the loss value instead of 6,000W.
Thus, a D based on a known motor is obtained according to equations [ formula 9 ] and [ formula 10 ] 1 And L 1 D of the target motor to be designed by the product of (2) 2 And L 2 Boundary of the value of the product of (c).
For example, by being D 1 、L 2 、R S1 And I S1 The values of (a) select the respective values of: 161mm, 66mm, 8.8mΩ and 320Arms for D 2 And L 2 In mm 2 The product in units, the following boundaries are obtained:
[ formula 11 ]
The application is of course not limited to the above-mentioned application for D 1 And L 1 Selection of values of (2)Selecting 5,000W and 6,000W as power values reflects for L 1 、D 1 、R S1 And I S1 A broad range of values for (c).
According to another of its aspects, the present application further relates to a drive unit for an electric or hybrid vehicle, comprising:
a rotating electrical machine as defined above, and
an inverter/rectifier electrically connected to the electrical windings of the stator and adapted to be connected to an on-board network of the vehicle.
The on-board network of the vehicle comprises, for example, two sub-networks, between which a switching system is interposed, which defines the DC/DC voltage conversion.
One of the inverter/rectifier and the DC/DC voltage converter may implement controllable electronic switches, such as gallium nitride (GaN), silicon carbide (SiC), or silicon transistors.
A first electrical subnetwork suitable for connection to an inverter/rectifier has a nominal voltage of, for example, 48V or greater than 300V, and a second electrical subnetwork has a nominal voltage of, for example, 12V.
The first subnetwork may have a battery or an electrical energy storage unit formed by one or more capacitors and arranged in parallel with the inverter/rectifier dc output. The capacity of the electrical energy storage unit is in particular between 2,000 muf and 4,000 muf, for example in the order of 3,000 muf.
The resistance values of the phases of the electrical windings of the stator and the resistance values of the inverter/rectifier may be selected such that they satisfy the following relationship:
[ formula 12 ]
Wherein P is mec max Indicating the nominal power of the rotating electrical machine.
This relationship is explained in the applicant's application WO 2020/025611.
According to another aspect thereof, the application further relates to a hybrid or electric vehicle driveline comprising:
a unit as defined above, and
a gear box including a pinion defining a gear box ratio, and
a front axle and a rear axle, wherein the front axle and the rear axle are connected through a connecting rod,
the shaft of the rotating electrical machine is rigidly connected for common rotation to:
input shaft of gearbox, or
An output shaft of a gearbox, or
Idler pinions of gearboxes, or
Front or rear axle.
As a variant, for co-rotation, the shaft of the motor may be rigidly connected to:
when the powertrain includes an internal combustion engine, the crankshaft of the internal combustion engine of the vehicle. In this case, the rotating electrical machine may include pulleys or any other device connected to the rest of the vehicle driveline. For example, the electric machine is connected to a crankshaft of an internal combustion engine of the vehicle, in particular by means of a belt.
The driveline may include a dry or wet dual clutch, each output shaft of which then forms an input shaft for the gearbox.
According to another aspect thereof, the present application further relates to a method for manufacturing a rotating electrical machine, comprising:
stator comprising a multiphase electrical winding, and
a rotor rotatable about an axis of rotation,
the method comprises the following steps:
determining the values of the outer diameter (D) and the axial dimension (L) of the stator, such that said values are in mm 2 The product in units satisfies the following relationship:
[ formula 13 ]
And
an electric machine is produced with a frame of the stator, the outer diameter and the axial dimensions of which have values determined in this way.
All or part of the above also applies to another aspect of the application.
According to another aspect of the present application, the present application further relates to a method for manufacturing a target rotating electrical machine, comprising: comprising a stator of multiphase electrical windings, a rotor rotatable about an axis,
the method comprises the following steps:
for a reference motor, an outer diameter value (D 1 ) And the axial dimension value (L of the frame of the stator 1 )，
Determining an outer diameter value (D of a frame of a stator of a target motor 2 ) And an axial dimension value (L 2 ) So that the value is in mm 2 The product of units satisfies the relationship
[ formula 14 ]
And
the target motor with the frame of the stator is manufactured with its outer diameter and axial dimensions having values determined in this way.
Thus, knowing an electric machine that is optimized in terms of core loss, it is possible for the application to have design rules for designing electric machines with different or the same nominal power, i.e. also optimized in terms of core loss.
Drawings
The application will be better understood by reading the following description of non-limiting exemplary embodiments thereof and by reference to the accompanying drawings, in which:
FIG. 1 schematically and partially illustrates a powertrain of an exemplary embodiment of the application that may be employed;
figure 2 schematically shows an example of a rotating electrical machine of the system immersed in oil in figure 1,
FIG. 3 shows an example of the rotor of the rotary electric machine of FIG. 2 alone, and
fig. 4 schematically illustrates an electrical circuit of a rotating electrical machine of the powertrain of fig. 1 and 2.
Detailed Description
Fig. 1 shows a power transmission system 1 to which the present application is applicable. In this case, the drivetrain 1 comprises a double clutch 6 with discs or plates, which may be dry or wet.
The double clutch has two output shafts 2 and 3, which in this case are concentric. Each of these shafts defines an input shaft of the gearbox 4. Within the oil filled housing, the gearbox 4 comprises a plurality of pinion gears defining a plurality of gear ratios R1-Rn. In this case, the shaft 2 is associated with an odd gear ratio, and the shaft 3 is associated with an even gear ratio.
The output torque of the gearbox 4 is transmitted to the wheels of the vehicle to drive the vehicle.
The drivetrain 1 is hybrid or electric and comprises a rotating electric machine 7. The rotating electrical machine 7 is located within the housing of the gearbox 4. In the example considered, the shaft of the rotating electric machine 7 is adapted to be engaged by meshing with a pinion 8 of the input shaft 2 associated with an odd gear ratio, rigidly connected to the gearbox, but other positions are possible for the rotating electric machine 7, which may, for example, mesh with a pinion of the input shaft 3 associated with an even gear ratio, rigidly connected to the gearbox. Furthermore, a position outside the housing of the gearbox 4 is also possible.
The rotating electrical machine 7 may form a driving power source for a vehicle. The rotating electrical machine 7 includes a housing not shown in fig. 2. Also included within the housing are a shaft 13, a rotor 12 rigidly connected to the shaft 13 for rotation therewith, and a stator 10 surrounding the rotor 12. The rotor 12 rotates about an axis X.
Although not shown, the housing may include front and rear bearings that are assembled together and each may have a hollow shape and centrally support a respective ball bearing for rotatably mounting the shaft 13.
In this exemplary embodiment, the stator 10 comprises a frame 15 formed by a stack of lamination sheets provided with slots (for example of the semi-closed or open type) provided with slot insulators for mounting the multiphase electrical windings of the stator. Each phase comprises windings which pass through slots of the frame 15 and form, together with all other phases, a front winding head 16 and a rear winding head 17 on either side of the frame 15 of the stator. For example, the windings may be obtained using continuous enamel covered wires, or using conductor elements in the form of bars connected to each other, such as pins. Each slot may receive a plurality of conductors, for example 2, 4 or 6 conductors.
In this case, the electrical windings of the stator define a double three-phase system, only one of which is shown in fig. 4, each of which implements a star or delta configuration, the output of which is connected to the inverter/rectifier 20. As a variant, the electrical windings of the stator may define a single three-phase system.
The rotor 12 in fig. 2 is formed from a stack of laminated sheets, as shown in fig. 3. There may be any number of pole pairs defined by the rotor 12, for example between three and eight, for example equal to six or equal to eight.
Fig. 2 also shows that the shaft 13 is hollow, through which the oil flow passes. The openings made in the shaft 13 and shown in fig. 2 allow radial injection of oil into the motor, so that in the example considered the rotor and stator are immersed in oil.
The motor further comprises a sensor for measuring the rotor position, which is not shown in fig. 2. For example, these sensors are three hall effect sensors that interact with a magnetic target that is rigidly connected to the rotor and rotates together, but other sensors are possible, such as a resolver or an inductive sensor.
The electrical windings of the stator of the rotating electrical machine 7 form part of an electrical circuit comprising an inverter/rectifier 20. The inverter/rectifier 20 is interposed between the electrical windings of the stator and a first sub-network of the on-board network of the vehicle, in the example, with a nominal voltage equal to 48V. The inverter/rectifier 20 includes, for example, a plurality of switching arms, each arm implementing two transistors mounted in series and separated by a midpoint. Each transistor is, for example, a transistor made of gallium nitride (GaN), silicon carbide (SiC), or silicon.
In the example depicted, the first subnetwork of the vehicle network further comprises a battery 21 connected to the rest of the first subnetwork by means of a disconnection switch 22. The first subnetwork may optionally further include one or more electrical consumers 23, including, for example, but not limited to, an electric booster.
In the example depicted, the electrical energy storage unit 25 is positioned on the direct input terminal 24 of the inverter/rectifier 20 and is formed by an assembly of, for example, a capacitor or a plurality of capacitors. The capacity of the electrical energy storage unit 25 is for example between 3,000 muf and 4,000 muf.
In the example considered, the circuit further comprises a DC/DC voltage converter 27 interposed between the first and second subnetworks of the on-board network. Similar to the inverter/rectifier 20, the DC/DC voltage converter comprises, for example, transistors, which may be of the same type as the transistors mentioned above. The second subnetwork of the vehicle network has a nominal voltage of, for example, 12V.
In a known manner, this second subnetwork may comprise a battery 30 and an electrical consumer (not shown), which may be selected from the following non-limiting list: lighting systems, electric power steering systems, braking systems, air conditioning systems or car radio systems.
In the example considered, the circuit further comprises a control unit 32, which may be a central computer of the vehicle or which may be dedicated to all or part of the powertrain system 1. The control unit 32 communicates with the various components of the circuit via a data network 33, for example of the CAN type, as shown in fig. 4.
Knowing the outer diameter D of the frame 15 of the stator of the reference motor as shown in figure 2 1 And the axial dimension L of the same 1 For a target rotating electrical machine having a similar structure to that in fig. 2 and, for example, having a different nominal voltage, the application includes determining the outer diameter D of the frame 15 of the stator 2 And the axial dimension L of the same 2 To satisfy the value at L 1 、D 1 、L 2 And D 2 Given relationships between to release the targetLoss of the motor.
As described above, when the loss of the reference motor is equal to 5,000W, D is provided by the following equation 1 And L 1 The value of (2) and D 2 And L 2 Is a link between the values of (a).
[ formula 15 ]
In the example considered, the nominal power of the reference motor is 25kW and the desired nominal power of the target rotating electric machine is 35kW.
The following data were used: d (D) 1 ＝161mm，L 1 ＝66mm，R S1 ＝8.8mΩ，I S1 =320 Arms, the following formula is:
[ formula 16 ]
Consider the phase current I of a target rotating electrical machine S2 The maximum root mean square value of (a) is equal to 400Arms, and the resistance R of the inverter/rectifier 20 ond Equal to 1.5mΩ, the following equation:
[ formula 17 ]
This results in a resistance R of the phases of the electrical windings of the stator of the target rotating electrical machine S2 The value of (2) is 6.4mΩ.
Subsequently, D 2 And L 2 The previous equation for the product of (a) becomes:
[ formula 18 ]
D 2 ×L 2 ＝1,148×D 1 ×L 1
Thus, for D described above 1 And L 1 Is used as a reference to the value of (a),
[ formula 19 ]
D 2 ×L 2 ＝0,0122
For the same rotating electrical machine with a nominal power of 35kW, the maximum direct current in the associated 48V battery is 790A. In order to maintain the same ohmic losses as the reference rotating electrical machine, with a nominal power of 25kW and a resistance of its associated 48V battery of 6mΩ, the maximum current of the associated 48V battery being 550A, a battery resistance of 3mΩ will be selected for the 48V battery associated with the target rotating electrical machine 7.
The application is not limited to the examples already described.

Claims (10)

1. A rotating electrical machine (7), comprising:
a stator (10) comprising a multiphase electrical winding, and
a rotor (12) rotatable about an axis (X),
the motor (7) is configured such that the outer diameter (D) and the axial dimension (L) of the frame (15) of the stator (10) are in mm 2 The product in units satisfies the following relationship:
[ formula 20 ]
Wherein R is S The resistance of one phase, expressed in omega,
I S represents the maximum root mean square value of the phase current, in A units, and
n represents the number of phases of the electrical winding of the stator,
the rotating electrical machine (7) has a nominal power of greater than or equal to 4 kW.
2. The rotating electrical machine according to claim 1, wherein the rotor (12) comprises a plurality of permanent magnets and does not comprise an electrically energized winding.
3. A drive module for an electric or hybrid vehicle, comprising:
a rotating electrical machine (7) according to claim 1 or 2, and
an inverter/rectifier (20) electrically connected to the electrical windings of the stator and adapted to be connected to an on-board network of the vehicle.
4. Module according to the preceding claim, the resistance (R s ) And the resistance (R) of the inverter/rectifier (20) ond ) The following relationship is satisfied
[ formula 21 ]
Wherein P is mecmax Representing the nominal power of the motor.
5. The module of claim 4, the electrical windings of the stator being three-phase or defining a double three-phase system.
6. A module according to any one of claims 3 to 5, the rotating electrical machine (7) having a nominal supply voltage of 48V.
7. A drivetrain (1) for a hybrid or electric vehicle, comprising
The module according to claim 3 to 6,
a gear box (4) comprising a pinion defining a gear box ratio, and
a front axle and a rear axle, wherein the front axle and the rear axle are connected through a connecting rod,
the shaft of the rotating electrical machine is rigidly connected for common rotation to:
input shaft of gearbox, or
An output shaft of a gearbox, or
Idler pinions of gearboxes, or
Front or rear axle.
8. A drivetrain (1) as claimed in claim 7, comprising a dry or wet double clutch (6), each output shaft of which forms the input shaft for the gearbox (4).
9. A method of manufacturing a rotating electrical machine (7), comprising:
a stator (10) comprising a multiphase electrical winding, and
a rotor (12) rotatable about an axis (X),
the method comprises the following steps:
determining the values of the outer diameter (D) of the frame (15) of the stator (10) and the axial dimension (L) of the stator such that the values are in mm 2 The product in units satisfies the following relationship:
[ formula 22 ]
An electric machine is produced with a frame (15) of the stator (10), the outer diameter (D) and the axial dimension (L) of which have values determined in this way.
The rotating electrical machine has a nominal power of greater than or equal to 4 kW.
10. A method for manufacturing a target rotating electrical machine (7), comprising: a stator (10) comprising multiphase electrical windings and a rotor (12) rotatable about an axis (X), the method comprising the steps of:
for a reference motor, an outer diameter value (D) of a frame (15) of a stator (10) of the reference motor is obtained 1 ) And its axial dimension value (L 1 )，
Determining an outer diameter value (D) of a frame (15) of a stator (10) of a target motor 2 ) And axial dimension (L) 2 ) Values in mm 2 The product of units satisfies the relationship
[ formula 23 ]
And
manufacturing a target motor (7) having a frame (15) of a stator (10), the outer diameter (D) of the frame 2 ) And axial dimension (L) 2 ) With the value determined in this way,
the reference motor and the target motor have a nominal power of greater than or equal to 4 kW.
CN202280028412.9A 2021-03-19 2022-03-09 Rotary electric machine Pending CN117203878A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FRFR2102755 2021-03-19
FR2102755A FR3121001A1 (en) 2021-03-19 2021-03-19 Rotating electric machine
PCT/EP2022/056051 WO2022194640A1 (en) 2021-03-19 2022-03-09 Rotary electric machine

Publications (1)

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CN117203878A true CN117203878A (en) 2023-12-08

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CN (1) CN117203878A (en)
DE (1) DE112022001607T5 (en)
FR (1) FR3121001A1 (en)
WO (1) WO2022194640A1 (en)

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Publication number Priority date Publication date Assignee Title
DE10165097B3 (en) * 2000-07-18 2015-07-23 Schaeffler Technologies AG & Co. KG Double clutch
US10700583B2 (en) * 2016-08-31 2020-06-30 Uti Limited Partnership Induction machine with integrated magnetic gear and related methods
FR3084788B1 (en) 2018-08-02 2020-12-04 Valeo Equip Electr Moteur ELECTRICAL ROTATING MACHINE WITH OPTIMIZED SIZING
FR3098038B1 (en) * 2019-06-26 2021-11-05 Valeo Equip Electr Moteur ROTATING ELECTRIC MACHINE WITH CO-AXIAL CONFIGURATION

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