Direct current homopolar machine

• US 5,587,618 A
• Filed: 04/13/1995
• Issued: 12/24/1996
• Est. Priority Date: 04/15/1993
• Status: Expired due to Fees

• Current Assignee: George D. Hathaway
• Original Assignee: George D. Hathaway
• Inventors: Hathaway, George D.
• Primary Examiner(s): Stephan, Steven L.
• Assistant Examiner(s): Link, Jonathan
• Application Number:
  US08/421,317
• Time in Patent Office: 621 Days
• Field of Search: 310/178, 310/102 A, 310/114, 322/48
• US Class Current: 310/178
• CPC Class Codes: H02K 31/02 with solid-contact collectors

Abstract

This invention relates to a homopolar machine. The homopolar machine can be used as a generator or a motor. In one embodiment, the homopolar machine has a conductive shaft which orbits around two stationary co-linear conductive shafts. There are four electrical connection means, two located on the orbiting shaft and one located on each of the stationary shafts. Each of the two electrical connections on the stationary shafts are connected to an electrical connection on the orbiting shaft. In this way, the three shafts are electrically connected. There is also an armature, which in a preferred embodiment is disc shaped, located at least one of the four electrical connections and comprises at least one of the electrical connections. Furthermore, a magnetic flux path mechanically associated with the orbiting shaft intersects the armature. In operation, the orbiting shaft moves around the two stationary shafts. This motion causes relative rotational movement between the magnetic flux path and the armatures thereby creating an electrical potential across the armatures. Because the armature is located in one of the electrical connection points and comprises an electrical connection, any electrical energy generated by the armature can be removed from the two stationary shafts. Therefore, any electrical energy generated by the machine can be removed without the need for brushes. In a further embodiment, four armatures, each of the four comprising one electrical connection, generate electrical energy in series.

Claims

1. A direct current electrical machine comprising:

an orbiting electrical conductor means comprising a first electrically conductive shaft means extending along an axis and having a first electrical connection means and a second electrical connection means displaced from the first electrical connection means along the axis;

a stationary set of electrical conductor means comprising;

a second electrically conductive shaft means having a third electrical connection means; and

a third electrically conductive shaft means having a fourth electrical connection means;

a first conductor means electrically coupling the first electrical connection means with the third electrical connection means;

a second conductor means electrically coupling the second electrical connection means with the fourth electrical connection means;

a first armature means comprising one of the four electrical connection means;

a first magnetic flux path mechanically coupled with the orbiting electrical conductor means and intersecting the first armature means;

a first magnetic flux generating means for generating a magnetic flux through said first magnetic flux path;

wherein the orbiting electrical conductor means is movable around the stationary set of electrical conductor means;

wherein movement of the orbiting electrical conductor means around the stationary set of electrical conductor means causes relative movement between said first magnetic flux path and said first armature means; and

wherein when the orbiting electrical conductor means moves around the stationary set of electrical conductor means while the first magnetic flux generating means is generating a magnetic flux through the first magnetic flux path an electrical potential is generated between the second electrically conductive shaft means and the third electrically conductive shaft means.

2. A direct current electrical machine as claimed in claim 1 wherein the first armature means comprises the fourth electrical connection means and is mechanically and electrically coupled to the third electrically conductive shaft means.

3. A direct current electrical machine as claimed in claim 1

wherein the first armature means comprises the second electrical connection means and is mechanically and electrically coupled to the first electrically conductive shaft means;

and

wherein movement of said orbiting electrical conductor means around the stationary set of electrical conductor means causes the first electrically conductive shaft means to rotate on its axis with respect to the first magnetic flux path.

4. A direct current electrical machine as claimed in claim 3 wherein the armature means is disc shaped having a centre and a circumference and wherein the circumference of the disc comprises the electrical connection means and the centre of the disc is mechanically and electrically coupled to an electrically conductive shaft means.

5. A direct current electrical machine as claimed in claim 3 wherein the armature means is drum shaped.

6. A direct current electrical machine as claimed in claim 3 wherein the armature means is cone shaped.

7. A direct current electrical machine as claimed in claim 1

wherein the armature means is cylindrically shaped and has an axial axis and is associated with the orbiting electrical conductor means such that the cylindrically shaped armature means comprises the first electrically conductive shaft means;

wherein a first end of the cylindrically shaped armature means comprises the first electrical connection means and a second end of the cylindrically shaped armature means comprises the second electrical connection means;

wherein the first magnetic flux path radially intersects the cylindrically shaped armature means between the first end and the second end; and

wherein as the cylindrically shaped armature means orbits around the stationary set of electrical conductor means the cylindrically shaped armature means rotates on its axial axis with respect to the first magnetic flux path.

8. A direct current electrical machine comprising:

an orbiting set of armature means comprising;

a first armature means;

a second armature means;

a first shaft means extending along an axis and electrically and mechanically coupled to said first armature means and said second armature means; and

wherein said first armature means is axially displaced from said second armature means;

a stationary set of armature means comprising;

a third armature means;

a second shaft means electrically and mechanically coupled to said third armature means;

a fourth armature means; and

a third shaft means electrically and mechanically coupled to said fourth armature means;

a first conductor means electrically coupling the first armature means with the third armature means;

a second conductor means electrically coupling the second armature means with the fourth armature means;

a first magnetic flux path mechanically coupled with the orbiting set of armature means and intersecting at least one of the four armature means;

a first magnetic flux generating means for generating a magnetic flux through said first magnetic flux path;

wherein the orbiting set of armature means is movable around the stationary set of armature means;

wherein movement of the orbiting set of armature means around the stationary set of armature means causes relative movement between said first magnetic flux path and said at least one armature means; and

wherein when the orbiting set of armature means moves around the stationary set of armature means while the first magnetic flux generating means is generating a magnetic flux through the first magnetic flux path, an electrical potential is generated between the second shaft means and the third shaft means.

9. A direct current electrical machine as claimed in claim 8

wherein said at least one of the four armature means is the third armature means;

and

wherein the first magnetic flux path is mechanically coupled with the orbiting set of armature means such that when the orbiting set of armature means moves around the stationary set of armature means the first magnetic flux path rotates with respect to the third armature means.

10. A direct current electrical machine as claimed in claim 8

wherein said at least one of the four armature means is the first armature means;

wherein movement of the orbiting set of armature means around the stationary set of armature means causes the first shaft means to rotate on its axis with respect to the first magnetic flux path;

wherein the first magnetic flux path is mechanically coupled with the orbiting set of armature means but not the first shaft means such that when the orbiting set of armature means moves around the stationary set of armature means the first armature means rotates with respect to the first magnetic flux path; and

wherein when the orbiting set of armature means moves around the stationary set of armature means while the first magnetic flux generating means is generating a magnetic flux through the first magnetic flux path, a first electrical potential having a first polarity is generated across the first armature means.

11. A direct current electrical machine as claimed in claim 10 further comprising:

a second magnetic flux path intersecting the second armature means;

a second magnetic flux generating means for generating a magnetic flux through the second magnetic flux path;

wherein the second magnetic flux path is mechanically coupled with the orbiting set of armature means but not the first shaft means such that when the orbiting set of armature means moves around the stationary set of armature means the second armature means rotates with respect to the second magnetic flux path;

wherein when the orbiting set of armature means moves around the stationary set of armature means while the second magnetic flux generating means is generating a magnetic flux through the second magnetic flux path, a second electrical potential having a second polarity is generated across the second armature means; and

wherein the second polarity is opposite to the first polarity.

12. A direct current electrical machine as claimed in claim 11 further comprising:

a third magnetic flux path intersecting the third armature means;

a third magnetic flux generating means for generating a magnetic flux through the third magnetic flux path;

wherein the third magnetic flux path is mechanically coupled with the orbiting set of armature means such that when the orbiting set of armature means moves around the stationary set of armature means the third magnetic flux path rotates with respect to the third armature means; and

wherein when the orbiting set of armature means moves around the stationary set of armature means while the third magnetic flux generating means is generating a magnetic flux through the third magnetic flux path, a third electrical potential having a third polarity is generated across the third armature means; and

wherein the third polarity is opposite to the first polarity.

13. A direct current electrical machine as claimed in claim 12 further comprising:

a fourth magnetic flux path intersecting the fourth armature means;

a fourth magnetic flux generating means for generating a magnetic flux through the fourth magnetic flux path;

wherein the fourth magnetic flux path is mechanically coupled with the orbiting set of armature means such that when the orbiting set of armature means moves around the stationary set of armature means the fourth magnetic flux path rotates with respect to the fourth armature means; and

wherein when the orbiting set of armature means moves around the stationary set of armature means while the fourth magnetic flux generating means is generating a magnetic flux through the fourth magnetic flux path, a fourth electrical potential having a fourth polarity is generated across the fourth armature means;

wherein the fourth polarity is the same as the first polarity; and

wherein the four armature means are electrically connected in series.

14. A direct current electrical machine as claimed in claim 13 wherein the four armature means are drum shaped.

15. A direct current electrical machine as claimed in claim 10 further comprising a cylindrically shaped armature means comprising the first armature means, the first shaft means and the second armature means such that the first magnetic flux path radially intersects the cylindrically shaped armature means and the first conductor means is electrically coupled with a first end of the cylindrically shaped armature means and the second conductor means is electrically coupled with a second end of the cylindrically shaped armature means.

16. A direct current electrical machine as claimed in claim 13 wherein

the first armature means is disc shaped and has a centre and a circumference;

the second armature means is disc shaped and has a centre and a circumference;

the third armature means is disc shaped and has a centre and a circumference; and

the fourth armature means is disc shaped and has a centre and a circumference.

17. A direct current electrical machine as claimed in claim 16 wherein

the first shaft means comprises a first shaft extending axially from the centre of the first disc shaped armature means to the centre of the second disc shaped armature means;

the second shaft means extends axially from the centre of the third disc shaped armature means;

the third shaft means extends axially from the centre of the fourth disc shaped armature means; and

the second shaft means and the third shaft means are mechanically coupled, but not electrically coupled.

18. A direct current electrical machine as claimed in claim 17 wherein

the first electrical conductor means comprises a first electrically conductive band electrically coupled with the circumference of the first disc shaped armature means and the circumference of the third disc shaped armature means;

and

the second electrical conductor means comprises a second electrically conductive band electrically coupled with the circumference of the second disc shaped armature means and the circumference of the fourth disc shaped armature means.

19. A direct current electrical machine as claimed in claim 17 wherein

the first electrical conductor means comprises a first gear means for mechanically and electrically coupling the first disc shaped armature means and the third disc shaped armature means;

and

the second electrical conductor means comprises a second gear means for mechanically and electrically coupling the second disc shaped armature means and the fourth disc shaped armature means.

20. A direct current electrical machine as claimed in claim 17

wherein the orbiting set of armature means further comprises:

a fifth disc shaped armature means;

a sixth disc shaped armature means;

a fourth shaft means extending along an axis and electrically and mechanically coupled to said fifth and sixth disc shaped armature means; and

wherein said fifth armature means is axially displaced from said sixth armature means;

wherein the stationary set of armature means further comprises;

a seventh armature means electrically and mechanically coupled to said third shaft means;

an eighth armature means; and

a fifth shaft means electrically and mechanically coupled to said eighth armature means;

wherein said machine further comprises;

a third conductor means electrically coupling the fifth armature means with the seventh armature means;

a fourth conductor means electrically coupling the sixth armature means with the eighth armature means;

a fifth magnetic flux path mechanically coupled with the orbiting set of armature means and intersecting the fifth armature means;

a fifth magnetic flux generating means for generating a magnetic flux through said fifth magnetic flux path;

a sixth magnetic flux path mechanically coupled with the orbiting set of armature means and intersecting the sixth armature means;

a sixth magnetic flux generating means for generating a magnetic flux through said sixth magnetic flux path;

a seventh magnetic flux path mechanically coupled with the orbiting set of armature means and intersecting the seventh armature means;

a seventh magnetic flux generating means for generating a magnetic flux through said seventh magnetic flux path;

an eighth magnetic flux path mechanically coupled with the orbiting set of armature means and intersecting the eighth armature means; and

an eighth magnetic flux generating means for generating a magnetic flux through said eighth magnetic flux path;

wherein the second, third and fifth shaft means are not electrically coupled to each other;

wherein movement of the orbiting set of armature means around the stationary set of armature means causes the fourth shaft means to rotate on its axis;

wherein all magnetic flux generating means generate a magnetic flux in their associated magnetic flux paths such that all of the armature means generate an electrical potential in series.

21. A direct current electrical machine as claimed in claim 9 wherein when an electrical potential is applied between the second shaft means and the third shaft means while the first magnetic flux generating means is generating a magnetic flux through the first magnetic flux path the orbiting set of armature means moves around the stationary set of armature means.