Uppi Corporation

Other

General Signal Corporation

Gregory C Kohls

Michael W Hogan

Teresa A Kamper

Gary Jungwirth

Frederick A Stich

Donald K Zahrte, Sr

Steven J Paul

Robert R Davidson

Stephen J Paul

Disclosed is a simplified electrical power disturbance gage. The gage is capable of measuring high-speed anomalies on power mains. The gage includes elements capable of detecting power line anomalies that effect the operation of electrical devices connected to the power line.

Apparatus for a simplified power disturbance indicator gage with learning capability options

This invention relates to methods of providing uninterruptible, regulated, single phase power to a critical single phase load when such power is derived from two of the phases of a polyphase power source. This invention describes a dual primary ferroresonant transformer which provides regulated and isolated voltage to a single phase critical load, when powered by a plurality of phases from a polyphase power source, and whereby a loss of electrical power to either a first or a second primary does not disturb the single phase power output voltage.

Three phase to single phase power protection system with multiple

A software management system of an intelligent power conditioner with backup system option employing trend analysis for early prediction of AC power line failure. An AC line power conditioner utilizing a microprocessor based control system for providing suitable alarms when an operating input AC line is defective or the trend of measured deficiencies predicts line power failure and for initiating an inverter control signal when an inverter module is attached as an option. The software controlled system analyzes the input and output voltages, provides analysis of input voltage surges and sags, measures transient amplitude and transient pulse width, counts glitches and dropouts, measures frequency, and identifies each defect and computes associated trends, stores all accumulated data in a Log Buffer for digital printout, and then provides appropriate alarms to a user. These alarms advise the user of imminent power failure and the need for an inverter module, if an inverter module, which can be attached by simple plug in, has not been attached thereto. If an inverter is unconnected, the addition of an inverter is suggested when defects are excessive, or when the trend indicates a higher than normal predilection to failure. A connected inverter module is activated when line defects prescribe such operation.

Software management of an intelligent power conditioner with backup

Instabilities in the output voltage provided from an AC power supply system such as an uninterruptible power supply connected to a power factor correcting load are suppressed by a dynamic voltage regulation stabilizer system which is connected across the output lines from the power supply system to the load. The DVR stabilizer system includes a rectifier connected to the power supply system output lines. A capacitor is connected across the output nodes of the rectifier. Switching devices form a bridge that connects the capacitor to the output lines. Selected switching devices in the bridge are turned on for a selected duration encompassing the time of the peak of each half-cycle of the AC voltage waveform provided by the power supply system. During normal operation, where the peak AC voltage from the power supply system is substantially constant, the capacitor charges up through the rectifier to a voltage level near the peak value of the AC voltage waveform. When the peak AC voltage level rises above the normal peak level, the capacitor clamps the voltage across the output lines at a value near the steady state peak value. When the peak voltage level drops below the normal peak value, the capacitor discharges through the switching device bridge during the peak of the half-cycle to fill in for the voltage drop. The DVR stabilizer system thus reduces the effect of interactions between the power supply system and the PFC load, to thereby dampen oscillations and stabilize the AC voltage waveform.

Dynamic voltage regulation stabilization for AC power supply systems

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Nekoosa, WI, United States of America

Gregory C Kohls