Dow Global Technolgoies LLC

University of Colorado

Timothy Plum

James Keenihan

Joseph A Langmaid

Stephen Pisklak

Michael E Mills

Robert Warren Erickson

Robert J Cleereman

Kevin D Maak

Jason A Reese

Ryan S Gaston

Michelle L Boven

Narayan Ramesh

Gerald K Eurich

Samar R Teli

Claude Brown, Jr

Michael I Lesniak

Stan Lickly

James Miller

The disclosed embodiments and principles provide a way to integrate high-efficiency, low-profile power electronics with localized maximum power point tracking (MPPT) into a rooftop shingle-based photovoltaic power system. DC-DC power converters having a height, or profile, as low as &#xbc; inch for a 200 W power output, are able to be included in a building-integrated photovoltaic (BIPV) roof shingle. The DC-DC power converters increase the relatively low voltage produced by two rows of series-connected photovoltaic shingles, each including photovoltaic cells, to a high voltage used by a DC-AC inverter. For example, DC-DC power converter increases the voltage produced by two rows of series-connected photovoltaic shingles from several tens of volts to approximately 400 volts. Thus, the DC-DC power converters provide a large voltage step-up using a low profile and with very high efficiency.

Low profile power conversion system for rooftop photovoltaic power systems

The present invention is premised upon a connector and electronic circuit assembly () at least partially encased in a polymeric frame (). The assembly including at least: a connector housing (); at least one electrical connector (); at least one electronic circuit component (); and at least one barrier element ().

Connector and electronic circuit assembly for improved wet insulation resistance

The present invention is premised upon a photovoltaic device suitable for directly mounting on a structure. The device includes an active portion including a photovoltaic cell assembly having a top surface portion that allows transmission of light energy to a photoactive portion of the photovoltaic device for conversion into electrical energy and a bottom surface having a bottom bonding zone; and an inactive portion immediately adjacent to and connected to the active portion, the inactive portion having a region for receiving a fastener to connect the device to the structure and having on a top surface, a top bonding zone; wherein one of the top and bottom bonding zones comprises a first bonding element and the other comprises a second bonding element, the second bonding element designed to interact with the first bonding element on a vertically overlapped adjacent photovoltaic device to bond the device to such adjacent device or to the structure.

Direct mounted photovoltaic device with improved adhesion and method thereof

The present invention is premised upon a through-roof connector assembly comprising one or more photovoltaic building sheathing elements capable of being affixed on a building structure, the photovoltaic building sheathing element including a sheathing element electrical connector along a sheathing element peripheral edge; a through-roof connector edge piece assembly that abuts a portion of the photovoltaic building sheathing element and includes: a body portion, an edge piece electrical connector, one or more wire leads that are connected on one end to the edge piece electrical connector; a wire guiding member with at least one conduit hole, the wire guiding member located under the through-roof connector edge piece assembly when assembled; and an under-roof junction device that is removably connected to the wire guiding member.

Through roof connector assembly for a photovoltaic building sheathing element

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Midland, MI, United States of America

Timothy Plum