7. Bi-directional H-bridge DC-DC Converter with RL Load a) Two-level Switching The archive contains 7 o

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7 Bi Directional H Bridge Dc Dc Converter With Rl Load A Two Level Switching The Archive Data Set 4 Zip Contains 7 O 1 (90.51 KiB) Viewed 17 times

7. Bi-directional H-bridge DC-DC Converter with RL Load a) Two-level Switching The archive <Data_Set_4.zip> contains 7 oscilloscope images that capture the operation of a bi-directional H-bridge DC-DC converter supplying a series connected resistive and inductive load with the nominal parameters of 500 and 50mH. The converter is supplied from a variac set through a rectifier to produce a nominal 100V DC link voltage. The measurements shown in these oscilloscope traces are as follows: • Channel 1 (Yellow) - DC Load Voltage (v.) using P5200 probe @ 500X attenuation. • Channel 4 (Magenta) – DC Load Current (i) using A600 current probe @ 100mV/A. Analysis: • Using PSIM, draw the circuit topology of the H-bridge DC-DC converter for this operating condition. Show the DC source, the switching devices, the DC load and all measurement locations. Use current and voltage sensor elements for each measurement point. Simulate one operating point (e.g. D=0.25) for this H-bridge DC-DC converter and compare the result with the associated experimental trace. Extract from the data set measurements of the average load voltage (V.), average load current (I.), the magnitude and frequency of the peak-to-peak ripple in the output current (Aio(p-p)), and tabulate your results. • The v. and i, waveforms for D = 50% comprise four distinctive regions determined by the instantaneous polarity of the load voltage and current direction. With reference to the H-bridge schematic, show on your results which devices conduct in each of those regions. • Plot V. against D. Compare the results with the theoretical relationship for PWM bipolar switching of Vo = (2D-1)VDC- • Explain any discrepancies that exist between the theoretical rectifier responses and the measured data.