National Technology & Engineering Solutions of Sandia, LLC

Other

Arrowhead Center, Inc.

Olga Lavrova

Eric Langlois

Todd Monson

Jack David Flicker

Stanley Atcitty

Sigifredo Gonzalez

Satishkumar J Ranade

Nataraj Pragallapati

Sijo Augustine

Nicholas Sonny Gurule

Valerio De Angelis

A method and system for determining the state of one or both of an electrical conductor or an associated system utilizing a non-invasive sensor and a magnetostrictive response from the current of the electrical conductor. The method includes providing a sensor assembly including a magnetostrictive resonator sensor and a signal detector. A state of one or both of the electrical conductor or the associated system is determined with the fault detector in response to a first frequency profile and a second frequency profile obtained with the magnetostrictive resonator sensor. A fault monitoring system utilizing a magnetostrictive resonator sensor is also disclosed.

Magnetostrictive current sensor method and system

A DC bus is connected to a PV array, a battery or both, to power a grid connected inverter load on the bus. A system and method is described for controlling current flow on a DC bus regardless of the type of inverter. A converter receives a DC battery voltage. A switching module controls current flow through the converter. A current generator generates a reference current in response to a reference voltage. A comparator connected at the output of the current generator compares the reference current with a battery current and outputs a signal to a controller. The controller generates a reference value. A PWM generator modulates the switch module to control current flow and energy flow between the DC bus and the battery. The current from the DC bus to the inverter is controlled to allow proper grid-connected operation regardless of inverter type.

Solar-battery integrated DC system

Growing community of inventors

Las Cruces, NM, United States of America

Olga Lavrova