Double-harmonic winding brushless excitation direct-current generator with wide voltage regulation range
A technology of DC generators and harmonic windings, applied in the direction of synchronous motors with stationary armatures and rotating magnets, electric components, and the shape/style/structure of winding conductors, which can solve the axial magnetic flux path and magnetic field regulation Limited range and other problems, to achieve the effect of suppressing tooth harmonic electromotive force, fast magnetic ability, and easy realization
Inactive Publication Date: 2020-06-09
DONGHUA UNIV
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Problems solved by technology
[0004] The invention provides a double harmonic winding brushless excitation DC generator with a wide voltage adjustment range, which solves the problems of limited axial magnetic flux path and magnetic field adjustment range in existing hybrid excitation motors
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[0016] The present invention will be further explained below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of this application.
[0017] The embodiment of the present invention relates to a dual harmonic winding brushless excitation DC generator with a wide voltage adjustment range. It adopts a fractional slot structure and includes a stator and a rotor. The rotor is located inside the stator and can follow the rotating shaft inside the stator. Rotating, the stator includes a stator core, the stator core is provided with a plurality of grooves along the circumferentia...
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The invention relates to a double-harmonic winding brushless excitation direct-current generator with a wide voltage regulation range. A fractional slot structure is adopted. A stator comprises a stator iron core; the stator core is provided with a plurality of grooves in a circumferential direction; a first motor stator armature winding is arranged in each groove; second motor stator armature windings are arranged in every two spaced grooves; stator harmonic windings are arranged in grooves without the second motor stator armature windings; a rotor comprises a rotor iron core; the rotor ironcore comprises main teeth and branch teeth; the branch teeth are arranged at the ends of the main teeth; the main teeth are sleeved with rotor excitation windings; and the branch teeth are sleeved with rotor harmonic windings. The fractional slot structure is adopted, and therefore, the tooth harmonic electromotive force of the rotor harmonic windings is suppressed, and wide-range excitation adjustment is realized; excitation is realized by adopting the stator harmonic windings, so that brushless excitation and main flux adjustment are convenient to realize.
Description
Technical field [0001] The invention relates to the field of direct current generators, in particular to a dual harmonic winding brushless excitation direct current generator with a wide voltage adjustment range. Background technique [0002] Permanent magnet synchronous generators have excellent characteristics such as high power density and high efficiency, and are widely used in industrial fields such as mobile power sources such as vehicle-mounted generators and wind power generation. However, permanent magnet synchronous generators have always had three problems to be solved: (1) The excitation flux generated by the permanent magnet is difficult to adjust, and the output voltage is difficult to adjust when the speed changes; (2) The permanent magnet material has the risk of loss of magnetization. The motor cannot work; (3) With the increasing use of permanent magnet materials, it is expensive and needs to be reduced. The amount of permanent magnet materials in the hybrid ex...
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IPC IPC(8): H02K21/16H02K29/00H02K3/16H02K3/20H02K3/28H02K1/16H02K1/24
CPCH02K1/165H02K1/24H02K3/16H02K3/20H02K3/28H02K21/16H02K29/00H02K2213/03
Inventor 姚飞孙立志安群涛
Owner DONGHUA UNIV