Active Power, Inc.
|Active Power, Inc. Patent applications|
|Patent application number||Title||Published|
|20140167533||ROTOR ASSEMBLY APPARATUS AND METHODS - Rotors assemblies usable in energy storage devices and power systems include a plurality of laminations oriented in vertical alignment, a first plate contacting a first side of the laminations, a second plate contacting a second side of the laminations, and at least one fastener engaged with the plates to compressively retain the laminations and limit relative movement of the laminations. Fasteners can engage the plates via an interference fit and pass through a clearance in the laminations sized to limit contact between the fasteners and the laminations during rotation of the rotor assembly. The laminations can be arranged with a thicker region of a first lamination above a thinner region of a second to form a stacked pair, and multiple stacked pairs can be rotationally offset from one another.||06-19-2014|
|20140165778||LAMINATED ROTOR APPARATUS AND METHODS - Rotors usable in energy storage devices and power systems are formed by orienting a thicker region of a first lamination above a thinner region of a second lamination to form a stacked pair. Multiple stacked pairs of laminations can be positioned in vertical alignment and compressively retained. Usable laminations can be removed from a sheet of material having thicker and thinner regions along its width, each lamination including a visible indicator to facilitate visual identification of the thicker and thinner regions of the lamination. Visible indicators can also be used to identify and position the top and bottom faces of the laminations in the same orientation, and to rotationally offset stacked pairs of laminations from one another to account for possible variations along the length of the sheet of material.||06-19-2014|
|20140165777||SYSTEMS AND METHODS FOR SECURING A ROTOR APPARATUS - Rotors apparatus usable in energy storage devices and power systems include a plurality of laminations having a center and at least one orifice spaced a distance from the center, and at least one fastener extending through the orifice. The one or more fasteners, the one or more orifices, or combinations thereof are sized to reduce contact between the fasteners and the laminations during rotation of the rotor apparatus. The fasteners and orifices can define an envelope, corresponding to the maximum space able to be occupied by a fastener to reduce contact between the fastener and the laminations, and one or more fasteners can have a volume of material less than the volume of the envelope to reduce bending forces on the fastener.||06-19-2014|
|20130133917||INSULATION SYSTEM FOR PREVENTION OF CORONA DISCHARGE - Methods and systems for preventing corona discharge are provided. In one embodiment, an insulation system for a coil conductor comprising a grounded conductive or semi-conductive layer is molded over a primary insulation layer molded on coil conductor which limits the occurrence of voltage drop to the primary insulating layer is disclosed.||05-30-2013|
|20110215645||CONTAINERIZED CONTINUOUS POWER SYSTEM AND METHOD - It is an object of this disclosure to provide an efficient continuous power system that may be deployed quickly and at low cost to a variety of destinations. The containerized nature of the presently disclosed system may allow these advantages to be attained. The disclosed system is particularly well suited for deployment in data center applications, but one of ordinary skill will recognize that it may be useful in a variety of situations.||09-08-2011|
|20100171366||TRANSIENT ENERGY SYSTEMS AND METHODS FOR USE OF THE SAME - This disclosure relates to transient energy systems for supplying power to a load substantially instantaneously on demand. Transient energy systems may include a flywheel coupled the rotor of an induction motor generator. One embodiment of the disclosure refers to systems and methods for reducing loads on a bearing in a transient energy system. In another embodiment, the disclosure refers to an induction motor generator that is optimized for high power transient power generation, yet low power motor operation. Yet another embodiment of the disclosure refers to using a flywheel as a drag pump to cool components of a transient energy system. In yet another embodiment, a slip control scheme is discussed for regulating a DC bus. In yet a further embodiment of the disclosure a method is provided for reducing unnecessary turbine starts by making turbine start a function of the rotational velocity of a flywheel.||07-08-2010|
Patent applications by Active Power, Inc.