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Stability Control of Transient Response of Four-Leg Voltage Source Inverter

AMUTHA PRIYA, N Anuja

Abstract


Four-leg voltage source inverters require a balanced sinusoidal output voltage for supplying unbalanced and/or nonlinear loads. Four-leg voltage source inverters are more advantageous than 3-leg voltage source inverters in such a way by the greater utilization of DC link voltage, independency of the modulation factor of load current and avoidance of superposition of a DC component with the AC output voltage. Pole Placement Control technique via state feedback is used to achieve an accurate adjustment of the transient performance of the inverter and to track its reference input under steady state conditions. Its transient performance is compared with that of Ziegler-Nichols’ tuned proportional-integral and proportional-integral-derivative controllers and linear quadratic regulator. Also, adaptive pole placement control technique is utilized to make the inverter to adapt to the changes when load variation occurs in the system.

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References


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DOI: https://doi.org/10.37628/jvdt.v3i1.540

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