Magneto generator for self-powered apparatuses

• US 6,943,476 B2
• Filed: 06/14/2004
• Issued: 09/13/2005
• Est. Priority Date: 06/13/2003
• Status: Active Grant

• Current Assignee: DUCATI Energia SpA
• Original Assignee: DUCATI Energia SpA
• Inventors: Cocchi, Manuel, Regazzi, Gianni
• Primary Examiner(s): Lam, Thanh
• Application Number:
  US10/866,243
• Publication Number:
  US 20040251762A1
• Time in Patent Office: 456 Days
• Field of Search: 31015643-15649, 310/74, 310152-153, 310/70.A, 310/70.R
• US Class Current: 310/156.47
• CPC Class Codes: H02K 1/2791 Surface mounted magnets; Inset magnets
• CPC Class Codes: H02K 11/049 Rectifiers associated with stationary parts, e.g. stator cores
• CPC Class Codes: H02K 21/222 Flywheel magnetos
• CPC Class Codes: H02K 2201/06 Magnetic cores, or permanent magnets characterised by their skew

Abstract

A magneto generator for self-powered apparatuses; the magneto generator comprises a stator provided with an electric winding, and a permanent magnet rotor coaxially arranged to the stator. The stator and the rotor have a first, and respectively a second pole system which together with the electric winding define a multiphase electromagnetic system connected to a bridge rectifier, secured to the stator. The poles of the stator and the poles of the rotor have opposite polar surfaces in which the axis of each polar surface of the rotor, is slanted with respect to a reference line parallel to the longitudinal axes of the polar surfaces of the stator.

Claims

1. A magneto generator for self-powered apparatuses, comprising:

a stator having a first magnetic circuit and an electric winding defining a first pole system;

a rotor coaxially arranged to the stator, the rotor in turn having a second magnetic circuit comprising a second pole system said first and second pole systems defining a multiphase electromagnetic system;

the poles of the stator and of the poles of the rotor having opposite polar surfaces each extending on a respective longitudinal axis; and

in which the electric winding of the stator is connected to a diode bridge for rectifying the electric current flowing from the generator, characterised in that

the longitudinal axis of each polar surface of the rotor pole system is angularly slanted in a same direction, with respect to a reference line parallel to the longitudinal axes of the polar surfaces of the stator.

2. A magneto generator according to claim 1, characterised in that the angle between the axis of each polar surface of the poles of the rotor and the reference line ranges from 10°

to 30°

.

3. A magneto generator according to claim 2, characterised in that the aforesaid angle ranges preferably from 15°

to 20°

.

4. A magneto generator according to claim 1, characterised in that the longitudinal axis of the polar surface of each pole of the rotor, is slanted with respect to the rotational axis of the rotor.

5. A magneto generator according to claim 1, characterised in that the magnetic circuit of the rotor is consisting of a single radially polarised ring member.

6. A magneto generator according to claim 1, characterised in that the rectifier bridge is directly secured to a side of the stator.

7. A magneto generator according to claim 1, characterised in that the polar system of the rotor, the polar system of the stator, and the electric winding define a six-phase electromagnetic system.

8. A magneto generator according to claim 7, characterised in that said six-phase electromagnetic system comprises a first delta winding connected between a first set of diodes of the rectifier bridge, and a second star winding connected between a second set of diodes of the rectifier bridge.