Linear electric generator having an improved magnet and coil structure, and method of manufacturing

• US 7,309,934 B2
• Filed: 06/02/2005
• Issued: 12/18/2007
• Est. Priority Date: 06/14/2002
• Status: Expired due to Fees

• Current Assignee: Sunyen Company Limited
• Original Assignee: Sunyen Company Limited
• Inventors: Tu, Yu-Ta, Yeh, Show-Jong
• Primary Examiner(s): SAN MARTIN, JAYDI A
• Application Number:
  US11/142,268
• Publication Number:
  US 20050231044A1
• Time in Patent Office: 929 Days
• Field of Search: 310 12- 14
• US Class Current: 310/12.12
• CPC Class Codes: H01F 7/021 Construction of PM H01F7/0278 takes precedence; PM compositions H01F1/032
• CPC Class Codes: H01F 7/0273 Magnetic circuits with PM for magnetic field generation
• CPC Class Codes: H02K 35/00 Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit arrangements for handling mechanical energy structurally associated with generators H02K7/00, e.g. H02K7/06
• CPC Class Codes: H02K 35/02 with moving magnets and stationary coil systems
• CPC Class Codes: H02K 39/00 Generators specially adapted for producing a desired non-sinusoidal waveform

Abstract

Linear electric generators include stationary windings and armature magnets arranged to reciprocate axially relative to the windings, or stationary magnet structures and movable windings arranged to reciprocate relative to the stationary magnet structures. The armature magnets or stationary magnet structures are in the form of multiple pole magnets made up of a plurality of individual pole structures, each pole structure including a pair of magnets joined to each other with facing poles of like polarity. In addition, the windings may be in the form of a double winding structure including at least one first clockwise winding and at least one second counterclockwise winding arranged in a multi-layered stacked arrangement.

Claims

1. A linear electric generator, comprising:

a plurality of individual windings, wherein each of said windings is formed in at least one layer of a multi-layered stacked arrangement, said individual windings including at least one first individual clockwise winding and at least one second individual counterclockwise winding separate from the first clockwise winding; and

an armature arranged to move linearly within said plurality of individual windings and thereby induce a single phase electric current in said windings, wherein said armature comprises a plurality of magnets, opposite poles of which abut each other.

2. A linear electric generator as claimed in claim 1, further comprising a second individual clockwise winding and a second individual counterclockwise winding, said second individual clockwise and counterclockwise windings being separate from each other and from said first individual clockwise and counterclockwise windings.

3. A linear electric generator, comprising:

a plurality of individual windings, wherein each of said windings is formed in at least one layer of a multi-layered stacked arrangement, said individual windings including at least one first individual clockwise winding and at least one second individual counterclockwise winding separate from the first clockwise winding; and

an armature arranged to move linearly within said plurality of individual windings and thereby induce a single phase electric current in said windings,

wherein said armature comprises a plurality of magnets and wherein said magnets include pairs of parallelepiped shaped dipole magnets having two ends and lateral faces, said dipole magnets in said pairs being joined together at said lateral faces such that like poles face each other, and said pairs being joined together at said ends of said individual dipole magnets to form said magnetic pole structures.