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Electrical pulse generator using pseudo-random pole distribution

A technology of electric pulses and magnetic poles, applied in the direction of electromechanical devices, machines/engines, spark ignition controllers, etc., can solve problems such as hindering larger applications, and achieve short-duration, high-energy effects

Inactive Publication Date: 2005-05-11
IBM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But existing designs have limitations that prevent larger applications

Method used

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  • Electrical pulse generator using pseudo-random pole distribution
  • Electrical pulse generator using pseudo-random pole distribution
  • Electrical pulse generator using pseudo-random pole distribution

Examples

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Embodiment Construction

[0031] The embodiment described herein is a rotating electromagnetic device for generating electrical pulses, and some terms used herein have the following meanings. A "rotor" is a physical member that rotates about an axis. A "stator" is a stationary member that does not rotate relative to the shaft. An "armature" is an electrical conductor in which a voltage is induced by a time-varying magnetic field relative to the armature. Because the armature is usually wound in coils or loops, it is sometimes referred to as "armature winding" or "armature coil", it being understood that this is not intended to imply any specific arrangement of the electrical conductors forming the armature. geometric shapes. The armature can be located on the rotor or the stator. The magnetic field driving the armature can actually be a stationary, non-changing field that is "time-varying" with respect to the armature only because the armature is rotating. A "field winding" or "field coil" is an el...

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Abstract

A multi-pole electric pulse generator containing magnetic poles having a pseudo-random distribution. Preferably, the magnetic poles are equal in size and interval, and the polarity conforms to a pseudo-noise binary sequence, which sequence is specifically a primitive polynomial m-sequence. At one position in the rotor rotation, all rotor poles are aligned with corresponding stator poles to provide maximum net magnetic flux through the armature windings. At all other rotor positions, the poles are misaligned and the net magnetic flux through the armature windings is small. In operation, rotation through these misaligned rotor positions produces substantially no change in magnetic flux and thus no electrical energy. When the rotor reaches this alignment position, a sudden, large change in magnetic flux produces a high-energy electrical pulse. An exemplary application is for generating an ignition spark for an internal combustion engine.

Description

technical field [0001] The present invention relates to electrical generators, and more particularly to a generator generating discrete electrical pulses. Background technique [0002] For many devices and applications it is necessary to generate a high energy electrical pulse. Probably the most well-known of these applications is the spark ignition of conventional internal combustion engines. There are many other, though less common, applications of high energy electrical pulses that are well established. For example, electrical discharge machining utilizes a stream of discrete electrical pulses to generate sparks across a gap between a magnetic pole and a metal workpiece filled with a non-conductive fluid to erode the workpiece into a desired shape. Pulse welding uses the high heat of electrical pulse discharges to join metals. Many stoves and similar devices use electrical pulses to ignite the fuel, resulting in high efficiency in a steady combustion process. The synt...

Claims

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Application Information

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IPC IPC(8): F02P15/00H02K39/00
CPCH02K39/00
Inventor R·L·加尔布雷斯
Owner IBM CORP
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