Introduction
Description of the PV100S
The PV100S 100 kW Grid-Tied Photovoltaic Inverter is a UL 1741 listed, utility interactive, three-phase power conversion system for grid-connected photovoltaic arrays with a power rating of 100 kW. Designed to be easy to install and operate, the PV100S automates start-up, shutdown, and fault detection scenarios. With user-definable power tracking that matches the inverter to the array and adjustable delay periods, users are able to customize start up and shut down sequences. Multiple PV100S inverters are easily paralleled for larger power installations.
The PV100S power conversion system consists of a pulse-width modulated (PWM) inverter, switch gear for isolation and protection of the connected AC and DC power sources, and a custom Wye/Wye isolation transformer. Housed in a rugged NEMA 3R rated, powder-coated steel enclosure, the PV100S incorporates sophisticated Intellimod (IPM) Insulated Gate Bipolar Transistors (IGBTs) as the main power switching devices. An advanced, field-proven, Maximum Peak Power Tracker (MPPT) integrated within the PV100S control firmware ensures the optimum power throughput for harvesting energy from the photovoltaic array.
The advanced design of the PV100S includes an EMI output filter and the main AC contactor located electrically on the utility side of the isolation transformer. The location of the main AC contactor, and the ability to de-energize the isolation transformer during times of non-operation, greatly reduces the night-time tare losses consumed by an idle isolation transformer. An integrated soft-start circuit precludes nuisance utility-tie circuit breaker trips as the result of isolation transformer inrush current.
Additionally, the PV100S integrated controller contains self-protection features including over and under voltage and frequency safeguards. An integral anti-island protection scheme prevents the inverter from feeding power to the grid in the event of a utility outage. The PV100S includes a local user interface comprised of an ON/OFF switch, keypad, and 4-line, 80 character LCD display. A user-friendly, Graphic User Interface (GUI) provides a remote interface for operator interrogation of PV100S system status, control, metering/data logging and protective functions within the PV100S. The status, control, and logging features are also supported by the data modem (included) and can be accessed remotely.
The PV100S comes in two modules comprised of six enclosures to house the electronics described above. The first module includes the Main Inverter Enclosure, Inductor Enclosure, DC Interface Enclosure, and Communications Enclosure. The second module includes the Transformer Enclosure and AC Interface Enclosure. These components are identified in Figure 1-1 on page 1–3. Figure 1-1 also shows the dimensions and locations of the various enclosures that comprise the PV100S.
See “Layout Options” on page 2–6 for information on configuration options.
