The figure below shows a half-bridge voltage source inverter supplying an RL-load with R = 40 Ω and \(L = \left( {\frac{{0.3}}{\pi }} \right)H\). The desired fundamental frequency of the load voltage is 50 Hz. The switch control signals of the converter are generated using sinusoidal pulse width modulation with modulation index M = 0.6. At 50 Hz, the RL-load draws an active power of 1.44 kW. The value of DC source voltage VDC in volts is

The figure below shows a half-bridge voltage source inverter supplying

1.	The figure below shows a half-bridge voltage source inverter supplying an RL-load with R = 40 Ω and \(L = \left( {\frac{{0.3}}{\pi }} \right)H\). The desired fundamental frequency of the load voltage is 50 Hz. The switch control signals of the converter are generated using sinusoidal pulse width modulation with modulation index M = 0.6. At 50 Hz, the RL-load draws an active power of 1.44 kW. The value of DC source voltage VDC in volts is
A.	\(300\sqrt 2\)
B.	500
C.	\(500\sqrt 2\)
D.	\(1000\sqrt 2\)
Answer» D. \(1000\sqrt 2\)