A power inverter is a device that converts DC power (also known as direct current), to standard AC power (alternating current). Inverters are used to operate electrical equipment from the power produced by a car or boat battery or renewable energy sources, like solar panels or wind turbines. DC power is what batteries store, while AC power is what most electrical appliances need to run so an inverter is necessary to convert the power into a usable form. For example, when a cell phone is plugged into a car cigarette lighter to recharge, it supplies DC power; this must be converted to the required AC power by a power inverter to charge the phone.
What is the purpose of an inverter?
An inverter converts direct voltage from batteries or direct bus to alternating voltage, normally 220 Vca with output stabilization and in the form of a 50 Hz sinusoidal wave. This wave is often cleaner that the one obtained from the electrical network. The sinusoidal inverters are used to supply all kinds of load, whereas the “square”, “pseudo sinusoidal” or “modified sinusoidal” wave shape has certain limitations given its effect on inductive or capacitative loads. It is also important to mention that the noise or interference that can cause equipment such as precision instrumentation, telecommunication, etc. to function incorrectly. The main advantage is the price as it is often less than half what a sinusoidal device would cost for similar power.
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