Single Phase VSI Objective Questions – 5

A single phase full bridge inverter has RLC load with R = 4 Ω, L = 35 mH and C = 155 μF. The dc input voltage is 230 V and the output frequency is 50 Hz. Find the angle by which the third harmonic current will lead/lag the third harmonic output voltage.

A single phase half bridge inverter has RLC load. The dc input voltage (Vs/2) = 115 V and the output frequency is 50 Hz. The expression for the load voltage up to the fifth harmonic will be given by

A single phase full bridge inverter has RLC load with R = 4 Ω, Xl = 11 Ω and Xc = 20.54 Ω. The dc input voltage is 230 V. Find the value of fundamental load power.

The HF (Harmonic factor of nth harmonic) is the ratio of

Let Vs be the amplitude of the output voltage and P be the output power for a single-phase half bridge inverter. Then the corresponding values for a full bridge inverter would be

In VSI (voltage source inverters)

____________ is the measure of the contribution of any individual harmonic to the inverter output voltage.

The harmonic factor of nth harmonic is given by

The Total Harmonic Distortion (THD) is the ratio of

The total harmonic distortion (THD) is the measure of