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Electric motors and/or generators with mechanically adjustable permanent magnetic fields

A technology of electric motors and permanent magnets, applied in the field of electric motors and/or generators with mechanically adjustable permanent magnetic fields, which can solve problems such as low operating efficiency

Inactive Publication Date: 2016-06-29
路易斯・J・芬克尔
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A similar problem exists in wind turbines, where variations in wind speed encountered result in inefficiencies in operation

Method used

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  • Electric motors and/or generators with mechanically adjustable permanent magnetic fields
  • Electric motors and/or generators with mechanically adjustable permanent magnetic fields
  • Electric motors and/or generators with mechanically adjustable permanent magnetic fields

Examples

Experimental program
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Embodiment Construction

[0069] The following description is of the best mode currently contemplated for carrying out the invention. This description is not presented in a limiting sense, but merely for the purpose of describing one or more preferred embodiments of the invention. The scope of the invention should be determined with reference to the claims.

[0070] Figure 1A shows a side view of a reconfigurable electric motor 10 according to the invention, Figure 1B An end view of a reconfigurable electric motor 10 is shown, figure 2 shows along the Figure 1A A cross-sectional view of the reconfigurable electric motor 10 taken at line 2-2 in FIG. The motor 10 comprises a stator winding 14 and a rotor 12 inside the stator winding. The motor 10 is a brushless AC induction motor comprising a magnetic circuit comprising at least one permanent magnet 16 in a rotor 12 (see image 3 -7) or removable magnetic shunt block 80 (see Figure 30A with 30B ), the magnet 16 or magnetic shunt block 80 can b...

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Abstract

Apparatus and methods for regulating the magnetic fields of brushless motors and alternators for efficient operation over a wide range of revolutions per minute are disclosed. The motor or alternator comprises stationary windings (or stator) around a rotating rotor carrying permanent magnets. The permanent magnet is generally cylindrical and has north and south poles formed longitudinally in the magnet. The permeable loops are formed by magnets in permeable pole pieces such as low carbon or mild steel of non-magnetizable material and / or laminated insulation. Turning a permanent magnet within a pole piece or turning a non-magnetic shunt block will increase or decrease the resulting magnetic field, thereby tuning the motor or alternator for low RPM torque or for effectively high RPM efficiency. Changing the rotor field adjusts the voltage output of the alternator, allowing eg a wind turbine to maintain a constant voltage output.

Description

technical field [0001] This application is a continuation-in-part of U.S. Patent Application Serial No. 12 / 610,184, filed October 30, 2009, and U.S. Patent Application Serial No. 12 / 610,271, filed October 30, 2009, both of which are The contents are incorporated into this application by reference. Background technique [0002] The present invention relates to electric motors and generators, and more particularly to adjusting the orientation of fixed magnets and / or magnetically conductive non-magnetizable shunt blocks in a rotor for efficient operation at various revolutions per minute. [0003] Brushless DC motors are generally required to operate at a wide range of RPMs, but can only be operated efficiently over a limited RPM range. Furthermore, generators and alternators are often required to operate over a wide range of revolutions per minute. For example, automotive alternators operate at RPM proportional to engine RPM, while wind alternators operate at RPM proportiona...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/22H02K1/27
Inventor 路易斯·J·芬克尔安德烈亚·富里亚
Owner 路易斯・J・芬克尔
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