Switched DC electrical machine

A technology for DC conversion and rotating electrical machines, which is used in AC motor control, electronic commutation motor control, synchronous generators, etc., and can solve the problem of equipment relying on magnetic field maintenance.

Inactive Publication Date: 2007-01-31
PRECURSOR ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, according to the traditional mode of design, these devices rely on magnetic fields to maintain

Method used

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Examples

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Embodiment Construction

[0036] Embodiments of the invention include a rotating electrical machine in the form of an electric motor controlled by a switching device. refer to Figure 1 to Figure 12 This embodiment is described.

[0037] As shown, the motor 100 of this embodiment includes a stator assembly 3, a brush assembly 8, a shaft 1 supporting a rotor assembly 2, slip rings 6a and 6b, a flywheel 9, and switching devices 18a and 18b.

[0038] The stator assembly 3 comprises a set of stator poles 4a, 4b, 4c, 4d, 4e, 4f, 4g, 4h, 4i, 4j, 4k, 4l and stator coils 5a, 5b, 5c, 5d, 5e, 5f, 5g, 5h, 5i, 5j, 5k, 5l. The stator coils 5a, 5c, 5e, 5g, 5i, 5k have windings designed to supply an excitation current in a clockwise direction, while the stator coils 5b, 5d, 5f, 5h, 5j, 5l have windings designed to supply an excitation current in a counterclockwise direction , so that adjacent poles have opposite magnetic properties. The stator coils are connected in circuit either "parallel" or "series" to each o...

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PUM

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Abstract

A switched DC rotating electrical machine (100) comprising a stator (3), a rotor (2) and switching means (11a, 11b, 18a, 18b), an excitation winding (5) associated with one of the stator (3) or the rotor (2) having a pair of inputs, the excitation winding (5) being adapted to cause magnetization of a plurality of magnetic poles (4a - 4l), the switching means (11a, 11b, 18a, 18b) being adapted to be associated with a DC voltage source (19) to switch the output thereof to the first and a second input of the excitation winding (5), the DC voltage source (19) providing a low voltage output (-V), an intermediate voltage output (0V) and a high voltage output (+V), wherein in use the intermediate voltage output is continuously connected to the first input of said excitation winding 19 and the second input is switched in a cyclic operation by the switching means between connection with the high voltage output (+V) and the low voltage output (-V).

Description

technical field [0001] This invention relates to rotating electric machines. Among other things, the invention discloses a new method of setting up and operating an electric motor or generator. Background technique [0002] Electric motors have been widely used for more than a hundred years. Generally, electric motors are classified as AC (alternating current) or DC (direct current) type according to the type of current that powers the element. Within the various types there are many subclasses and many structures tried to obtain specific working characteristics. [0003] The advent of high-current solid-state devices such as diodes and thyristors, or SCRs (Semiconductor Controlled Rectifiers), has revolutionized the traditional design of AC and DC motors, yielding significant improvements in every application. In the field of DC motors, devices coupled with precise position sensing devices have enabled the design of motors without the use of a commutator, thereby signifi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K29/00H02P6/00H02P7/00H02P25/22
CPCH02P7/00H02K11/0073H02K29/10H02K25/00H02K11/33H02K19/24H02K19/26
Inventor 查尔斯·厄恩肖·丹尼斯
Owner PRECURSOR ENG
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