Monitoring power-related parameters in a power distribution unit

• Main Authors: Mcglumphy, Dennis W, Auclair, Brian P, Ewing, Carrel W, Maskaly, James P
• Format: Patent
• Language: English
• Published: 24.04.2018
• Subjects: BASIC ELECTRIC ELEMENTS; BOARDS, SUBSTATIONS, OR SWITCHING ARRANGEMENTS FOR THE SUPPLYOR DISTRIBUTION OF ELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; CURRENT COLLECTORS; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; GENERATION; LINE CONNECTORS; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; SELECTING; TESTING

A power distribution unit (PDU) disposable in an electrical equipment rack. The PDU has a housing, a power input penetrating the housing, outlets in the housing, a processor disposed in the housing, voltage and current sensors, and a voltage calculation procedure communicable with the processor. The processor samples voltage and current waveforms and calculates RMS values and other power parameters. A method of managing electrical loads each drawing electrical power from a PDU includes repeatedly sampling voltage across and current flowing through each of the loads, calculating raw RMS values of voltage and current, and scaling the raw RMS values to obtain corrected RMS voltage and current values and other power parameters.