Electrostatic Generator Design for Lightweight and Arc-Free Power
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Summary
Problems
Conventional alternators are heavy and inefficient due to the use of ferromagnetic materials and often experience dangerous electric arc phenomena, leading to complex structures and increased costs.
Innovation solutions
An electrostatic alternating current generator with a sinusoidal output is designed using aluminum for the armatures and dielectric materials to reduce weight and manufacturing costs, eliminating the need for ferromagnetic materials and dielectric fluids, and featuring a constant capacity to prevent electric arc phenomena.
TRIZ Analysis
Specific contradictions:
General conflict description:
Principle concept:
If ferromagnetic materials (iron or nickel) are used in alternators, then magnetic field generation is effective, but the total cost increases and the alternator becomes excessively heavy
Why choose this principle:
The patent replaces the traditional electromagnetic system (using ferromagnetic materials and moving magnetic fields) with an electrostatic system. The generator uses stationary charged electrodes that create an electric field, and a rotating dielectric element that modulates this field to induce voltage in stator windings, eliminating the need for heavy ferromagnetic rotor components
Principle concept:
If ferromagnetic materials (iron or nickel) are used in alternators, then magnetic field generation is effective, but the total cost increases and the alternator becomes excessively heavy
Why choose this principle:
The invention changes the fundamental operating parameter from magnetic field induction to electrostatic field modulation. By using high voltage DC charging of electrodes and rotating a dielectric barrier, the system generates alternating current through capacitive coupling rather than electromagnetic induction, achieving weight reduction while maintaining power generation capability
Application Domain
Data Source
AI summary:
An electrostatic alternating current generator with a sinusoidal output is designed using aluminum for the armatures and dielectric materials to reduce weight and manufacturing costs, eliminating the need for ferromagnetic materials and dielectric fluids, and featuring a constant capacity to prevent electric arc phenomena.
Abstract
The invention relates to an electrostatic alternating current generator (100; 200) comprising: – a shaft (1) movable by a motor (Mot) for rotating about an axis (Z); – a rotor element (10; 20) fixed to the shaft and comprising at least a first (11; 21) and at least a second (12; 22) rotor electrode; – a stator element (13; 23) fixed to a generator housing (13'; 23') unmovable with respect to the shaft; such a housing is configured to enclose the stator element, the rotor element and a portion of the shaft; the stator element comprises at least a first (14; 24) and at least a second (15; 25) stator electrode; – a direct voltage source (3) connectable to the at least a first and at least a second stator electrode through a first (16; 26) and a second (17; 27) stator terminal; – a first (4) and a second (5) metal connection element fixed to the shaft, the first metal element electrically connected to the at least a first rotor electrode and the second metal element electrically connected to the at least a second rotor electrode; – a resistor (R) having a first (r1) and a second (r2) terminal electrically connected to the first and second metal connection elements, respectively, to detect a variation over time of an electric potential difference (S) applied between the at least a first and at least a second rotor electrode following the rotation of the rotor element about the axis. Such an electrostatic generator further comprises a separation air gap (2) representative of a distance between the rotor element and the stator element unchanging during the rotation of the rotor element. During the rotation of the rotor element about the axis, each of these at least a first and at least a second rotor electrode form, with at least one portion of the at least a first and at least a second stator electrode, two capacitors connected to each other in series via the resistor.