Stem, Inc.

David Erhart

Stacey Reineccius

Craig Southeren

Jon Burlinson

Ben Kearns

Drew Stevens

John C Sellers

Embodiments of the present invention include control methods employed in multiphase distributed energy storage systems that are located behind utility meters typically located at, but not limited to, medium and large commercial and industrial locations. Current solutions for these types of electric load locations entail multiple discrete energy storage systems, where if any piece of an energy storage system is damaged, the ability of the complete power control strategy at the entire electric load location is at risk of becoming inoperable. Some embodiments of the invention include hardware and methods for dynamically reconfiguring networks of distributed energy storage systems that are able to provide automatic site layout discovery using a formed auto-discovering network formed at an electric load location.

Method and apparatus for automatically reconfiguring multi-phased networked energy storage devices at a site

Embodiments of the present invention may include control methods employed in multiphase distributed energy storage systems that are located behind utility meters typically located at, but not limited to, medium and large commercial and industrial locations. These multiphase distributed energy storage systems can operate semi-autonomously, but may be in frequent contact with a cloud-based optimization engine that is configured to develop energy control solutions based on various data inputs and to communicate these energy control solutions to one or more of the distributed energy storage systems. Due to characteristics of the electric load location and/or the use of on-site power generation, imbalances in the power draw per phase can be created within the electric load location. Therefore, embodiments of the invention may include systems and methods that are used to control and/or limit the imbalance in power flowing through one phase versus other phases at the electric load location.

Method and apparatus for balancing power on a per phase basis in multi-phase electrical load facilities using an energy storage system

The invention provides systems and methods for control of power charge/discharge from energy storage system. The invention also provides for power monitoring and management. A smart charge system may include a system sensor, one or more energy storage units, and a controller, which may receive information about the power demand, power provided by an electricity provider, and charge/discharge information from an energy storage unit. The information received may all be time synchronized in relation to a time based reference. The controller may provide instructions to an energy storage unit at a rapid rate.

High speed feedback adjustment of power charge/discharge from energy storage system

A method for multiphase electrical power phase identification by a monitoring component includes: receiving a request for the power phase identification for a given power component phase connection from a power component; in response, sending signal characteristics to the power component; monitoring power signals on distribution panel phase connections; determining that the signal characteristics are found on a given distribution panel phase connection; and in response, sending an identifier of the given distribution panel phase connection to the power component. In receiving the signal characteristics, the power component: selects the given power component phase connection; applies a signal with the signal characteristic on the given power component phase connection; receives an identifier of the given distribution panel phase connection from the monitoring component; and associates the identifier with the given power component phase connection.

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San Mateo, CA, United States of America

David Erhart