How Inverters Work - Working principle rectifier |
A power inverter, or inverter, is a power electronic device or circuitry that changes direct current (DC) to alternating current (AC).
The input voltage, output voltage and frequency, and overall power handling depend on the design of the specific device or circuitry. The inverter does not produce any power; the power is provided by the DC source.
A power inverter can be entirely electronic or may be a combination of mechanical effects (such as a rotary apparatus) and electronic circuitry. Static inverters do not use moving parts in the conversion process.
Power inverters are primarily used in electrical power applications where high currents and voltages are present; circuits that perform the same function for electronic signals, which usually have very low currents and voltages, are called oscillators. Circuits that perform the opposite function, converting AC to DC, are called rectifiers.
How inverters work. In this video we take a look at how an inverter works to convert direct current (DC) into Alternating current (AC). Inverters are used increasingly throughout industry as well as building services HVAC systems to achieve precise control of AC induction motors connected to AHU fans, compressors pumps etc. Inverters are also used within photovoltaic arrays to provide AC power for use in homes and buildings. In this video we start at the basics to understand the difference between AC and DC power and then look at a simplified example before moving onto an advanced pulse width modulation (PWM) example to see how the load experiences and AC supply from a DC source by converting the direct current into a sine wave.
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