Device and method of a back EMF permanent electromagnetic motor generator

• US 7,109,671 B2
• Filed: 03/26/2002
• Issued: 09/19/2006
• Est. Priority Date: 01/13/2000
• Status: Expired due to Fees

• Current Assignee: AI Technology Group, Inc.
• Original Assignee: AI Technology Group, Inc.
• Inventors: Bedini, John C.
• Primary Examiner(s): Ro, Bentsu
• Application Number:
  US10/107,925
• Publication Number:
  US 20020097013A1
• Time in Patent Office: 1,638 Days
• Field of Search: 318375-382, 318/140, 318/148, 318/151, 318/153, 318/459, 318/491, 318/492, 318/538, 310/113, 310/102.R, 310/112, 310/152, 310/156
• US Class Current: 318/140
• CPC Class Codes: H02K 21/24 with magnets axially facing the armatures, e.g. hub-type cycle dynamos
• CPC Class Codes: H02K 29/08 using magnetic effect devices, e.g. Hall-plates, magneto-resistors H02K29/12 takes precedence
• CPC Class Codes: H02K 53/00 Alleged dynamo-electric perpetua mobilia
• CPC Class Codes: H02P 9/00 Arrangements for controlling electric generators for the purpose of obtaining a desired output

Abstract

This invention is a back EMF permanent electromagnetic motor generator and method using a regauging process for capturing available electromagnetic energy in the system. The device is comprised of a rotor with magnets of the same polarity; a timing wheel in apposition to a magnetic Hall Effect pickup switch semiconductor; and a stator comprised of two bars connected by a permanent magnet with magnetized pole pieces at one end of each bar. There are input and output coils created by wrapping each bar with a conducting material such as copper wire. Energy from the output coils is transferred to a recovery rectifier or diode. The magnets of the rotor, which is located on a shaft along with the timing wheel, are in apposition to the magnetized pole pieces of the two bars. The invention works through a process of regauging, that is, the flux fields created by the coils is collapsed because of a reversal of the magnetic field in the magnetized pole pieces thus allowing the capture of available back EMF energy. Additional available energy may be captured and used to re-energize the battery, and/or sent in another direction to be used as work. As an alternative, the available back EMF energy may be dissipated into the system.

Claims

1. A method, comprising:

generating, with a permanent magnet, a magnetic field that moves a magnetic pole;

energizing a first coil to reverse the magnetic field;

de-energizing the coil to collapse the reversed magnetic field; and

capturing energy released by the collapsing magnetic field wherein capturing the energy comprises rectifying a fly-back signal that the collapsing magnetic field generates in a second coil.

2. The method of claim 1 wherein energizing the first coil comprises driving a current through a stator coil.

3. The method of claim 1 wherein energizing the first coil comprises generating a magnetic field that moves a magnetic pole of a rotor.

4. The method of claim 1 wherein de-energizing the first coil comprises cutting off a drive current to the coil.

5. The method of claim 1 wherein capturing energy comprises rectifying a fly-back signal that the collapsing magnetic field generates in the first coil.

6. An electric motor, comprising:

a magnetic pole piece;

a permanent magnet operable to generate a magnetic field at the magnetic pole piece;

a coil that is operable to reverse the magnetic field during a coil-energize period and to release energy stored in the reversed magnetic field during a coil-fly-back period; and

a recovery circuit operable to capture the energy released by the coil during the coil-fly-back period, wherein the recovery circuit comprises;

a recovery coil that is magnetically coupled to the coil; and

a rectifier coupled to the recovery coil.

7. An electric motor, comprising:

a magnetic pole piece;

a permanent magnet operable to generate a magnetic field at the magnetic pole piece;

a coil that is operable to reverse the magnetic field during a coil-energize period and to release energy stored in the reversed magnetic field during a coil-fly-back period; and

a recovery circuit operable to capture the energy released by the coil during the coil-fly-back period, wherein the recovery circuit comprises a full-wave rectifier.

8. The motor of claim 7 wherein the coil comprises a stator coil.

9. The motor of claim 7, further comprising:

a shaft; and

a rotor operable to rotate the shaft in response to the magnetic field.

10. The motor of claim 7 wherein:

the coil is operable to generate a fly-back current during the coil-fly-back period; and

the recovery circuit is operable to direct the fly-back current for powering or charging a device.

11. The motor of claim 7 wherein:

the coil is operable to generate a fly-back voltage during the coil-fly-back period; and

the recovery circuit is operable to direct the fly-back voltage for powering or charging a device.

12. The motor of claim 7 wherein the recovery circuit comprises:

a recovery coil that is magnetically coupled to the coil, and coupled to the rectifier.

13. An electric motor, comprising:

a rotor having a magnetic pole;

a stator having

a magnetic pole piece

a permanent magnet operable to exert a force on the magnetic pole by generating a magnetic field at the magnetic pole piece, and

a stator coil operable to reverse the force on the pole during a coil-energize period by reversing the magnetic field generated by the permanent magnet, and operable to release energy stored in the reversed magnetic field during a coil-fly-back period;

a coil-energize circuit operable to drive a current through the stator coil during the coil-energize period; and

a recovery circuit operable to capture the energy released by the stator coil during the coil-fly-back period.

14. The motor of claim 13 wherein the rotor comprises:

a disk having a periphery; and

wherein the magnetic pole is mounted to the periphery of the disk.

15. The motor of claim 13 wherein the permanent magnet is operable to exert an attractive force on the magnetic pole.

16. The motor of claim 13, further comprising a switching device that is operable to cause the coil-energize circuit to begin driving the current through the stator coil when or after the magnetic pole moves into alignment with the magnetic pole piece.

17. An electric motor, comprising:

a disk-shaped rotor having a periphery and multiple magnetic poles evenly spaced along the periphery;

a stator having

a permanent magnet having north and south poles,

a pair of magnetic bars respectively coupled to the north and south poles of the magnet,

a pair of facing magnetic pole pieces respectively coupled to the magnetic bars, forming a slot operable to receive the rotor periphery, and operable to attract the magnetic poles, and

a stator coil wrapped around the magnetic bars, operable to generate a magnetic field that causes the magnetic pole pieces to repel the magnetic poles while conducting a current, and operable to release energy stored in the magnetic field when the current is cut off;

a coil-energize circuit coupled to the stator coil;

a switching device operable to cause the coil-energize circuit to drive the current through the stator coil when or after one of the magnetic poles moves into alignment with the magnetic pole pieces and to cause the coil-energize circuit to cut off the current when the one magnetic pole moves a predetermined distance beyond the magnetic pole pieces; and

a recovery circuit operable to capture the energy released by the stator coil when the coil-energize circuit cuts off the current through the stator coil.

18. The motor of claim 17, further comprising:

a shaft;

wherein the rotor is mounted to the shaft; and

a timing wheel mounted to the shaft and operable to trigger the switching device on when or after the one magnetic pole moves into alignment with the magnetic pole pieces and to trigger the switching device off when the one magnetic pole moves the predetermined distance beyond the magnetic pole pieces.

19. The motor of claim 17, further comprising:

a shaft;

wherein the rotor is mounted to the shaft;

wherein the switching device comprises a Hall Effect switch; and

a magnetic timing wheel mounted to the shaft and operable to trigger the Hall Effect switch device on when or after the one magnetic pole moves into alignment with the magnetic pole pieces and to trigger the Hall Effect switch off when the one magnetic pole moves the predetermined distance beyond the magnetic pole pieces.