Power inverter
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A power inverter, inverter, or invertor is a power electronic device or circuitry that changes direct current (DC) to alternating current (AC). The resulting AC frequency obtained depends on the particular device employed. Inverters do the opposite of rectifiers which were originally large electromechanical devices converting AC to DC.
An inverter on a free-standing solar plant
Overview of solar-plant inverters
Inverter designed to provide 115 V AC from the 12 V DC source provided in an automobile. The unit shown provides up to 1.2 amperes of alternating current, or enough to power two 60 W light bulbs.
Internal view of a solar inverter. Note the many large capacitors (blue cylinders), used to store energy briefly and improve the output waveform.
Power electronics
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Power electronics is the application of electronics to the control and conversion of electric power.
An HVDC thyristor valve tower 16.8 m tall in a hall at Baltic Cable AB in Sweden
A battery charger is an example of a piece of power electronics.
Figure 8: The AC input for an ASD
FIGURE 9: Single-phase half-bridge voltage source inverter