Abstract: The instant disclosure is directed to a heterogeneous fiber fluid reservoir for holding and delivering fluid. A reservoir may comprise a rod having a core component and a surrounding component. Each of the core component and the surrounding component may comprise fibers. The core component may have a first property, and the surrounding component may have a second property different from the first property, or the core component and the surrounding component may each have a different value or range of values for the same property. Alternatively, a reservoir may comprise a rod that includes fibers and has a cross-sectional diameter. At least one property of the rod may vary in value along the cross-sectional diameter of the rod. The property may include, for example, fiber bulk density, fiber diameter, fiber material, fiber morphology, fiber surface tension, capillary force, fluid absorption capacity, color, or combinations thereof.

Abstract: A rotor assembly for a synchronous reluctance machine has a plurality of steel punched star-shaped supports secured along a shaft at spaced locations for retaining a plurality of laminated rotor sections. The star-shaped supports have four equiangularly spaced arms having arcuate valleys disposed therebetween that define a plurality of channels for receiving the rotor sections. The rotor sections are secured to the star-shaped core by a plurality of bands fastened circumferentially around the rotor. A plurality of grooves disposed circumferentially around the rotor receive and retain the bands in place. A rotor bar and arcuate spring may be disposed within a concave cavity defined by the rotor sections to reduce audible noise produced as the rotor rotates at a high rate of speed and provide added compression on the rotor sections to the core. The rotor sections also include a dimpled separator of predetermined thickness disposed between the laminate sheets to optimize the machine.

Abstract: A speed sensorless hybrid vector control starts from zero speed by using indirect vector control with stator frequency equal to slip frequency. As soon as the rotor begins to rotate, the drive is converted to direct vector control for normal operation. The direct vector control uses several low pass filters. The first is a harmonic reducing filter for the sensed motor phase current and voltage signals. The others comprise integration apparatus used in the calculation of motor flux quantities from the motor phase current and voltage signals.