Unirac Inc.

Brian Kuhn

Sandeep Narla

Kevin C Fischer

Udo Uebel

William J Morris

Daidipya J Patwa

Marc A Robinson

The present disclosure provides curtailing photovoltaic (PV) power output and autonomous load breaking in a backup mode of an electrical system. The electrical system includes a PV system, an energy storage system having a storage converter, and an energy control system. The energy control system is electrically coupled to the PV system, the energy storage system, and a plurality of backup loads. The electrical system includes an autonomous load breaker electrically coupled to a first backup load. When the energy control system switches from an on-grid mode to the backup mode, the storage converter adjusts the frequency of the power supplied to the backup side of the energy control system to a setpoint frequency that curtails PV power output, and the autonomous load breaker electrically disconnects the first backup load from the energy control system.

Systems and methods for photovoltaic production curtailment and autonomous load breaking

The present disclosure provides a photovoltaic (PV) disconnect device used in an electrical system. The PV disconnect device includes a relay component electrically coupled to a feed circuit of a backup PV power generation system and a connector port electrically coupled to an energy control system. The PV disconnect device includes a sensor circuit to measure at least one of a voltage, a current, and a current frequency of the feed circuit of the backup PV power generation system. The PV disconnect device includes a controller operatively coupled to the relay component, the sensor circuit, and the connector port. The controller receives and processes the voltage, the current, and the current frequency measurements. The controller selectively actuates the relay component based on the processed voltage, current, and current frequency measurements.

Photovoltaic disconnect device for storage integration

Status display panel

The present disclosure provides a method for controlling an energy control system. The method includes detecting a power outage at a grid interconnection. The method includes connecting a first set of the plurality of backup loads to a backup load interconnection, in which the backup load interconnection is electrically coupled to a backup power interconnection. The method includes disconnecting a second set of the plurality of backup loads from the backup load connection such that power is interrupted between the backup power source and the second set of backup loads. The method includes receiving a request from a user device to connect at least one load of the second set of the plurality of backup loads to the backup interconnection. The method includes determining whether to connect one load of the second set of the plurality of backup loads to the backup interconnection according to one or more programmed rules.

Energy control system

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Austin, TX, United States of America

Brian Kuhn