Power Electronics - Inverters

Consider the single-phase voltage source inverter circuit feeding an inductive load (L). Assume that the power MOSFET switches are ideal. S1 and S2 are switched on during the first 10 µs, and S3 and S4 are switched on du...

The 3-phase modulating waveforms ($v_a(t)$, $v_b(t)$ and $v_c(t)$), used in sinusoidal PWM in a Voltage Source Inverter (VSI) are $v_a(t) = 0.8 \sin (\omega t)$ V $v_b(t) = 0.8 \sin (\omega t - \frac{2\pi}{3})$ V $v_c(t)...

A single-phase full bridge voltage source inverter (VSI) feeds a purely inductive load. The inverter output voltage is a square wave in 180° conduction mode. The fundamental frequency of the output voltage is 50 Hz. If t...

The output voltage of a single-phase full bridge voltage source inverter is controlled by unipolar PWM with one pulse per half cycle. For the fundamental rms component of output voltage to be 75% of DC voltage, the requi...

A three-phase voltage source inverter with ideal devices operating in 180° conduction mode is feeding a balanced star-connected resistive load. The DC voltage input is Vdc. The peak of the fundamental component of the ph...

In the converter circuit shown below, the switches are controlled such that the load voltage $v_o(t)$ is a 400 Hz square wave. The RMS value of the fundamental component of $v_o(t)$ in volts is _________.

A 3-phase voltage source inverter is supplied from a 600V DC source as shown in the figure below. For a star connected resistive load of $20 \Omega$ per phase, the load power for 120° device conduction, in kW, is _______...

The figure below shows a half-bridge voltage source inverter supplying an RL-load with R = 40 Ω and L= $\frac{0.3}{\pi}$ H. The desired fundamental frequency of the load voltage is 50 Hz. The switch control signals of th...