Introduction of Basic Series Inverter

Introduction of Basic Series Inverter

Tags: Introduction of series inverter, theory of series inverter, working of series inverter,
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The inverter plays a vital role in Uninterrupted Power Supply (UPS). It is used to convert the direct current (DC) to alternating Current (AC) of required voltage.


In series inverter, the commutating elements L and C are connected in series with the load. This constitutes a series RLC resonant circuit. The Two SCRs are used to produce the halves (positive and negative half cycle) in the output.


In the first half of the output currents when SCR T1 is triggered it will allow the current to flow through L1, and load, and C2 thus charging. The capacitor C1 which is already charged at these instant discharges through SCR1, L1 and the Load. Hence 50% of the current is drawn from the input source and 50% from the capacitor. Similarly in the second half of the output current C1 will be charged and C2 will discharge through the load, L2 and SCR2, Again 50% of the load current is obtained from the DC input source and rest from the capacitor. The SCRs T1 and T2 are alternatively fired to get AC voltage and current.

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