Cam-controlled electromechanical rotary power inverter
AssigneeKuwait University
InventorOsama Abdulrahman Al-Naseem
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Abstract
The cam-controlled electromechanical rotary power inverter converts a plurality of DC source voltages to an AC power output by an electromechanical mechanism that includes a rotating assembly of cams intermittently contacting a series of brushes connected to the DC source voltages to sequentially add the DC voltages and then sequentially subtract the DC voltages over 360° of rotation of the cam assembly. In this manner, the inverter provides multilevel, e.g., seven discrete voltage levels, which are distributed as output sequentially in an additive manner and then a subtractive mariner to generate nearly sinusoidal voltages. Repeating sequences of brushes and cams over three 120° intervals allows for 3-phase AC voltage output from the inverter.
Claims3
A cam-controlled electromechanical rotary power inverter, comprising:
- a rotating, AC-generating assembly having a solid, electrically insulated, elongate cylindrical member;
- a first 360° electrically conductive rotor coaxially disposed on the cylindrical member proximate a top end portion of the cylindrical member;
- a second 360° electrically conductive rotor coaxially disposed on the cylindrical member proximate a bottom end portion of the cylindrical member;
- a plurality of arcuately edged, electrically conductive cams extending radially from portions of the cylindrical member at predetermined angular subintervals of a 360° rotation of the cylindrical member, a first predetermined sequence of the cams being electrically connected to the first electrically conductive rotor and a second predetermined sequence of the cams being electrically connected to the second electrically conductive rotor;
- a plurality of electrical brush conductors disposed around the rotating assembly and arranged for periodic sliding electromechanical contact against the electrically conductive cams;
- a plurality of DC input voltages, each of the DC input voltages being connected to a corresponding pattern of the brush conductors;
- a first load-connecting brush riding in continuous contact with the first 360° electrically conductive rotor;
- a second load-connecting brush riding in continuous contact with the second 360° electrically conductive rotor, the load-connecting brushes delivering a sequence of output voltages to a load, rotation of the assembly causing the remaining brushes to intermittently contact the arcuately edged electrically conductive cams in a patterned sequence sequentially adding the DC input voltages for distribution to the load over the first 180° of rotation, and sequentially subtracting the DC input voltages for distribution to the load over the second 180° of rotation, thereby distributing an Alternating Current output voltage to the load over the 360° of rotation of the rotary assembly.
Dependencies are inferred from the claim text.