WO2012101663A2 - Motor-generator unit - Google Patents

Motor-generator unit Download PDF

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Publication number
WO2012101663A2
WO2012101663A2 PCT/IT2011/000417 IT2011000417W WO2012101663A2 WO 2012101663 A2 WO2012101663 A2 WO 2012101663A2 IT 2011000417 W IT2011000417 W IT 2011000417W WO 2012101663 A2 WO2012101663 A2 WO 2012101663A2
Authority
WO
WIPO (PCT)
Prior art keywords
motor
generator
generator unit
unit according
magnets
Prior art date
Application number
PCT/IT2011/000417
Other languages
French (fr)
Other versions
WO2012101663A3 (en
WO2012101663A8 (en
Inventor
Fulvio Soldani
Original Assignee
Fulvio Soldani
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 Fulvio Soldani filed Critical Fulvio Soldani
Publication of WO2012101663A2 publication Critical patent/WO2012101663A2/en
Publication of WO2012101663A8 publication Critical patent/WO2012101663A8/en
Publication of WO2012101663A3 publication Critical patent/WO2012101663A3/en

Links

Classifications

    • 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
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2706—Inner rotors
    • H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
    • H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/18—Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
    • 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
    • H02K7/003—Couplings; Details of shafts
    • 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
    • H02K7/20—Structural association with auxiliary dynamo-electric machines, e.g. with electric starter motors or exciters

Definitions

  • the present invention concerns a motor-generator unit, of the type comprising an electric motor combined with an electric generator.
  • a machine in accordance with the present invention has constructive and structural characteristics that make it particularly beneficial both during construction and use.
  • the simple design of the present machine has a positive effect on costs of production and maintenance of the same.
  • FIG. 1 is a schematic perspective longitudinal sectional view of a machine in accordance with the present invention.
  • FIG.2 is a schematic side view in partial longitudinal ' section of a machine in accordance with the present invention.
  • FIG.3 is a schematic perspective external view of a machine in accordance with the present invention.
  • Figs.4-6 are a schematic perspective view, a front view and a side view of the rotor on the generator side according to a possible embodiment
  • Figs. 7-9 are a schematic perspective view, a front view and a side view of the rotor on the generator side according to a further possible embodiment.
  • a motor- generator in accordance with the present invention comprises an electric motor and an electric generator mounted on the same shaft (1) that supports the respective rotors spaced by a predetermined value.
  • the reference numerals "2", “3", “4" and “5" denote, respectively, the rotor and the stator of the motor and the rotor and the stator of the generator.
  • the reference numerals “6" and “7” denote the stator winding of the motor side and respectively the stator winding of the generator side of the motor-generator.
  • the reference numeral “8” denote a protection box for the electrical contacts.
  • the reference numerals "9” and “10” denote a flange on the motor side and a flange on the rotor side of the motor-generator.
  • the shaft (1) is supported by bearings (11) housed in seats presented on the inner side of each of the aforementioned flanges (9) and (10).
  • each of the stators (3, 5) there is mounted a corresponding annular finned sleeve (12, 13) .
  • the sleeve (12) of the stator (3) of the motor side has an edge (120) facing the other sleeve (13) and which fits into a corresponding groove (130) offered by the latter.
  • the rotor (4) of the generator is of the type made with permanent magnets (14) that are oriented parallel to axis (x-x) of the shaft (1) /
  • the same arrangement of magnets (14) is shown in figs. 4, 5 and 6.
  • the said magnets (1) can be oriented such that their respective symmetry planes form a predetermined non-null ⁇ angle with respect to said axis, as shown in Figs. 7, 8, and 9.
  • the said permanent magnets can be, for example, made of neodymium and they can have a parallelepiped shape .
  • the shaft (1) has an internal portion of enlarged diameter (100) thus defining two shoulders, one on the motor side and the other on the generator side, against which the rotors (2) and (4) bear, said rotors being fitted onto the shaft (1) from opposite sides during assembly of the machine.
  • the electrical output of the generator can be connected to appliances of any kind, including energy storage batteries.
  • the rotor (4) Since the rotor (4) is integral with the shaft (1) shared with the motor, the same rotor (4) is always driven in rotation during motor operation.
  • the generator can be turned off, automatically de- energizing the corresponding circuits, if - for example - the intensity of the motor current is greater than a predetermined threshold value.
  • the generator can more effectively carry out its function without adversely affecting the performance and efficiency of the motor.
  • the motor can be made in any known way.
  • the motor may be associated with a differently sized generator, i.e. the electric power of the generator can be different from that of the motor.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)

Abstract

Motor-generator unit comprising an electric motor and an electric generator mounted on the same shaft (1) that supports the respective rotors (2, 4) spaced by a predetermined value. The rotor (4) of the generator part of the unit comprises a plurality of permanent magnets ( 14 ).

Description

TITLE
Motor-generator unit.
DESCRIPTION
The present invention concerns a motor-generator unit, of the type comprising an electric motor combined with an electric generator.
More specifically, a machine in accordance with the present invention has constructive and structural characteristics that make it particularly beneficial both during construction and use. The simple design of the present machine has a positive effect on costs of production and maintenance of the same.
These and further features and advantages of the present invention will be more and better understood by any technician of this field thanks to the following description and to the annexed drawings, given by way of example but not to be considered in a limitative sense, wherein:
- Fig.l is a schematic perspective longitudinal sectional view of a machine in accordance with the present invention;
- Fig.2 is a schematic side view in partial longitudinal' section of a machine in accordance with the present invention;
- Fig.3 is a schematic perspective external view of a machine in accordance with the present invention;
- Figs.4-6 are a schematic perspective view, a front view and a side view of the rotor on the generator side according to a possible embodiment;
- Figs. 7-9 are a schematic perspective view, a front view and a side view of the rotor on the generator side according to a further possible embodiment.
Reduced to its essential structure and with reference to the figures of the attached drawings, a motor- generator in accordance with the present invention comprises an electric motor and an electric generator mounted on the same shaft (1) that supports the respective rotors spaced by a predetermined value.
In the drawings, the reference numerals "2", "3", "4" and "5" denote, respectively, the rotor and the stator of the motor and the rotor and the stator of the generator. The reference numerals "6" and "7" denote the stator winding of the motor side and respectively the stator winding of the generator side of the motor-generator. The reference numeral "8" denote a protection box for the electrical contacts. The reference numerals "9" and "10" denote a flange on the motor side and a flange on the rotor side of the motor-generator.
At its ends, the shaft (1) is supported by bearings (11) housed in seats presented on the inner side of each of the aforementioned flanges (9) and (10).
Externally to each of the stators (3, 5) , there is mounted a corresponding annular finned sleeve (12, 13) . In the example shown, the sleeve (12) of the stator (3) of the motor side has an edge (120) facing the other sleeve (13) and which fits into a corresponding groove (130) offered by the latter.
This facilitates the centering of the two sleeves during assembly of the machine.
In the example of Figl, the rotor (4) of the generator is of the type made with permanent magnets (14) that are oriented parallel to axis (x-x) of the shaft (1)/ The same arrangement of magnets (14) is shown in figs. 4, 5 and 6.
As an alternative, the said magnets (1) can be oriented such that their respective symmetry planes form a predetermined non-null · angle with respect to said axis, as shown in Figs. 7, 8, and 9.
The said permanent magnets can be, for example, made of neodymium and they can have a parallelepiped shape .
The shaft (1) has an internal portion of enlarged diameter (100) thus defining two shoulders, one on the motor side and the other on the generator side, against which the rotors (2) and (4) bear, said rotors being fitted onto the shaft (1) from opposite sides during assembly of the machine.
With reference to the example shown in Fig.l and Fig.2, in front of the flange (10) on the generator side there is a cooling fan (17) and, to protect it, a cover (15) with a grid (16) .
The electrical output of the generator can be connected to appliances of any kind, including energy storage batteries.
Since the rotor (4) is integral with the shaft (1) shared with the motor, the same rotor (4) is always driven in rotation during motor operation. The generator can be turned off, automatically de- energizing the corresponding circuits, if - for example - the intensity of the motor current is greater than a predetermined threshold value. Thus, the generator can more effectively carry out its function without adversely affecting the performance and efficiency of the motor.
The motor can be made in any known way.
The motor may be associated with a differently sized generator, i.e. the electric power of the generator can be different from that of the motor.
It goes without saying that the electric power of the motor and generator, as well as the number of magnets (14) and the motor configuration is chosen according to the characteristics of use of the machine.
In practice, the construction details may vary in any equivalent way as regards the single described and illustrated elements, without nevertheless departing from the scope of the adopted solution idea and thereby remaining within the limits of the protection granted to the present patent.

Claims

Motor-generator unit characterized in that it comprises an electric motor and an electric generator mounted on the same shaft (1) that supports the respective rotors (2, 4) spaced by a predetermined value and in that the rotor (4) of the generator part of the unit comprises a plurality of permanent magnets (14).
Motor-generator unit according to claim 1 characterized in that said magnets (14) are parallel to the axis (x-x) of said shaft (1) . Motor-generator unit according to claim 1 characterized in that said magnets (14) are located inside respective grooves provided by the rotor ( 4 ) .
Motor-generator unit according to claim 1 characterized in that said magnets (14) are oriented such that their respective symmetry planes form a predetermined non-null angle with respect to the axis (x-x) of said shaft (1) .
Motor-generator unit according to claim 1 characterized in that said magnets (14) are made of neodymium.
Motor-generator unit according to claim 1 characterized in that said shaft (1) has an internal portion of enlarged diameter (100) thus defining two shoulders, one on the motor side and the other on the generator side.
Motor-generator unit according to one or more of the preceding claims, wherein externally to the stator (3, 5) of the motor side and respectively of the generator side there is a finned sleeve (12, 13) , characterized in that the sleeve (12) of the stator (3) of the motor side has an edge (120) facing the other sleeve (13) and which fits into a corresponding groove (130) offered by the latter.
PCT/IT2011/000417 2011-01-26 2011-12-23 Motor-generator unit WO2012101663A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000004U ITFI20110004U1 (en) 2011-01-26 2011-01-26 MOTORCYCLE GROUP.
ITFI2011U000004 2011-01-26

Publications (3)

Publication Number Publication Date
WO2012101663A2 true WO2012101663A2 (en) 2012-08-02
WO2012101663A8 WO2012101663A8 (en) 2013-06-27
WO2012101663A3 WO2012101663A3 (en) 2013-10-10

Family

ID=43975761

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2011/000417 WO2012101663A2 (en) 2011-01-26 2011-12-23 Motor-generator unit

Country Status (2)

Country Link
IT (1) ITFI20110004U1 (en)
WO (1) WO2012101663A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022061427A1 (en) * 2020-09-25 2022-03-31 Pereira Fernando Leonardo System for reusing mechanical energy from escalators and the like for the micro-generation of electrical energy

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0252011A1 (en) * 1986-07-02 1988-01-07 Hasler AG Stepmotor drive with feedback
WO1995034117A1 (en) * 1994-06-08 1995-12-14 Precise Power Corporation Versatile ac dynamo-electric machine
DE19748392A1 (en) * 1997-11-03 1999-05-12 Sab Wabco Kp Gmbh Generating electrical energy from rotary movement of stub axles carrying rail vehicle wheels
WO2002052701A1 (en) * 2000-12-26 2002-07-04 Byoung-Sun Park Ac motor generator

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022061427A1 (en) * 2020-09-25 2022-03-31 Pereira Fernando Leonardo System for reusing mechanical energy from escalators and the like for the micro-generation of electrical energy

Also Published As

Publication number Publication date
ITFI20110004U1 (en) 2012-07-27
WO2012101663A3 (en) 2013-10-10
WO2012101663A8 (en) 2013-06-27

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