Poly-phasic multi-coil generator

Abstract

A polyphasic multi-coil generator includes a driveshaft, at least first and second rotors rigidly mounted on the driveshaft so as to simultaneously synchronously rotate with rotation of the driveshaft, and at least one stator sandwiched between the first and second rotors. The stator has an aperture through which the driveshaft is rotatably journalled. A stator array on the stator has an equally radially spaced-apart array of electrically conductive coils mounted to the stator in a first angular orientation about the driveshaft. The stator array is radially spaced apart about the driveshaft. The rotors and the stator lie in substantially parallel planes. The first and second rotors have, respectively, first and second rotor arrays.

Description

RELATED APPLICATIONS [0001] This application claims the priority date of U.S. Provisional Application No. 60 / 804,279 with a filing date of Jun. 8, 2006.BACKGROUND OF INVENTION [0002] 1. Field of the Invention [0003] The present invention relates to the field of generators, and more particularly, it relates to a generator having polyphasic multiple coils in staged staggered arrays. [0004] 2. Background of the Invention [0005] Conventional electric motors employ magnetic forces to produce either rotational or linear motion. Electric motors operate on the principle that when a conductor, which carries a current, is located in the magnetic field, a magnetic force is exerted upon the conductor resulting in movement. Conventional generators operate through the movement of magnetic fields thereby producing a current in a conductor situated within the magnetic fields. As a result of the relationship between conventional motors and generators, conventional generator technologies have focused...

AI Technical Summary

Benefits of technology

[0067] With the PPMCG, the power electronics are not exposed to the collective and significant implications of a fault current representing the entire generator output due to the isolation of independent coils throughout the system. Dividing the output current into smaller manageable sections within the PPMCG System significantly reduces the negative impact of faults in the stator windings. Far less current is created by each three-coil sub-system, or staged-element, and therefore negative system fault impacts are localized and minimized. For example, if an 18 coil stator is used in a three phase system with 9 complete stator assemblies, the generator will have 18×3 or 54 independent 3 phase sub-stages (162 coils divided into 3 phase sub-stages). Each of which will be managed with a simple semiconductor switching mechanism to isolate faults. The microprocessor may be designed to assess the status of each three-coil stage prior to engaging it, and if in fact the stage is faulted, the system will automatically skip this stage

Problems solved by technology

This resistance will continue to grow as the speed of the shaft is increased, thus reducing the efficiency of the generator.

However, the system would not create an efficient generator due to the physical reality that it takes more energy to pull the magnet away from the soft iron core of the coil than would be created in the form of electricity by the passing of the magnet.

Furthermore, while existing generator systems are relatively efficient at converting mechanical to electrical energy, these existing system have a narrow “efficient” operational range, and lack the specific power density required to maximize usefulness for many applications.

As a result, these technologies are challenged to convert mechanical energy to electrical energy efficiently when the prime-mover energy source is continuously changing.

At this speed the generator can efficiently process kinetic energy into electricity, but at speeds outside this optimal range these systems cannot adapt and therefore either the energy collection system (i.e., turbine) or signal processing circuitry must compensate.

Therefore these conventional generators have an inability to maintain a high coefficient of performance due to a limited operating range.

Conversely, in those cases where input energy is below the threshold, current generators either fail to operate, or they operate inefficiently (i.e., wasted input).

Most of the efforts to date have focused on either mechanical input buffers (gear boxes) or electronic output buffers (controls), but the cost has been high, both in terms of development costs & complexities as well as inefficiencies and increased operations costs.

Therefore, the design utilizing two separate generators would have additional construction/material costs as well as additional maintenance costs over the PPMCG design.

As an example, a small button magnet can easily pick up a paperclip if it is held close to it but, if held at a distance equal to the paperclips length there will be little effect because the permeability of air is very low.

Flux leakage is problematic for generators because it results in less magnetic field strength where it is desired, at the induction coil poles, and it generates unwanted effects such as eddy currents that reduce the systems efficiency.

Unfortunately, materials with high permeability are also quite heavy and reduce the power to weight ratio of the generator significantly.

In addition, these systems have not been successful in a completely isolated and controlled induction process as is the case with the PPMCG.

These systems are not as efficient as a permanent magnet system as a certain amount of the output power created by the generator is required to be fed back into its own electromagnets in order to function, thus reducing efficiency.

Unfortunately, permanent magnets get more difficult to work with as generators get larger, and larger systems in the megawatt range are almost all electromagnetic induction systems.

This post-processing practice that attempts to fix a signal after it is created lacks efficiency and often leads to the need for asynchronous function where the output is converted into DC and then back again to AC in order to be synchronous with the grid.

This is an inefficient process where substantial losses are incurred in the inversion p

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