A grid-connected PV complement is a slightest costly and lowest-maintenance choice for a home solar electric system. Could it be right for you? Get informed with a components, how it works, and a pros and cons of seizing a sun’s appetite around a grid-tied PV system.
The following is an mention from Solar Electricity Basics by Dan Chiras (New Society Publishers, 2010). Richly illustrated and clearly written, Solar Electricity Basics is an indispensible authority for homeowners or tiny business owners looking to daub a appetite of a object for electricity. Chiras, an consultant in residential renewable appetite and a MOTHER EARTH NEWS contributing editor, discusses a theoretical, unsentimental and mercantile aspects of residential solar installations, including consummate nonetheless simply distinct information about inverters, batteries and controllers, permits, complement designation and maintenance, and many more. This mention is from Chapter 5, “Solar Electric Systems — What Are Your Options?”
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PV systems tumble into 3 categories: (1) grid-connected, (2) grid-connected with battery backup and (3) off-grid. The information here will assistance we confirm either a grid-connected PV complement suits your needs, lifestyle and pocketbook.
Grid-Connected PV Systems
Grid-connected PV systems are a many renouned solar electric complement on a marketplace today. Grid-connected systems are so named since they are connected directly to a electrical grid — a immeasurable network of electric wires that spans a republic and crisscrosses your neighborhood. These systems are infrequently referred to as “battery-less grid-connected” or “battery-less utility-tied” systems.
A grid-connected system consists of 5 categorical components: (1) a PV array, (2) an inverter, (3) a categorical use row or breaker box, (4) reserve disconnects and (5) meters.
To know how a battery-less grid-connected complement works, let’s start with a PV array. The PV array produces DC electricity. It flows by wires to a inverter, that translates a DC electricity to AC electricity. (For some-more on AC and DC electricity, see “AC vs. DC Electricity” after in this article.)
The inverter doesn’t only modify a DC electricity to AC; it translates it to grid-compatible AC — that is, 60 cycles per second, 120-volt (or 240-volt) electricity. Because a inverter produces electricity in sync with a grid, inverters in these systems are mostly referred to as “synchronous” inverters.