Power Inverters

Inversion is the conversion of dc power to ac  power at a desired output voltage or current and 
frequency. A static semiconductor inverter circuit performs this electrical energy inverting transformation. The terms voltage-fed and current-fed are used in connection with the output from inverter circuits. A  voltage-source inverter (VSI)  is one in which the dc input voltage is essentially constant and independent of the load current drawn. The inverter specifies the load voltage while the drawn current shape is dictated by the load. 

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