Xantrex Technology PV100S-208 manual Operation Features, Fixed Unity Power Factor Operation

Introduction

Operation Features

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 startup and shutdown 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 (IGBT’s) 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.

Fixed Unity Power Factor Operation

The Xantrex PV Series of grid-tied inverters maintains unity power factor during operation. The control software constantly senses utility voltage, and constructs the output current waveform to match the utility voltage. The PV line of inverters is not capable of operation without the presence of normal utility voltage, nor is it capable of varying the output power factor off unity.

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