Question

2. [15 Points] A 60 Hz half-bridge inverter is operated using bipolar PWM with a frequency modulation index of 101 and an amplitude modulation ratio of 0.90. This system is driven from a 600 V DC bus. For any waveform sketches identified below, be sure to include both time and amplitude labels. a. Draw a schematic diagram of the power stage for this converter. Be sure to identify where a load would be connected to this converter. b. Sketch and label the two waveforms required to implement an analog sine-triangle PWM scheme for this system. Note: you may select the absolute amplitudes for these waveforms as a design parameter. c. Sketch and label the phase-to-neutral voltage waveform ($V_{AN}$) for this converter during steady-state operation.

          2. [15 Points] A 60 Hz half-bridge inverter is operated using bipolar PWM with a frequency
modulation index of 101 and an amplitude modulation ratio of 0.90. This system is driven
from a 600 V DC bus. For any waveform sketches identified below, be sure to include both
time and amplitude labels.
a. Draw a schematic diagram of the power stage for this converter. Be sure to identify
where a load would be connected to this converter.
b. Sketch and label the two waveforms required to implement an analog sine-triangle
PWM scheme for this system. Note: you may select the absolute amplitudes for these
waveforms as a design parameter.
c. Sketch and label the phase-to-neutral voltage waveform ($V_{AN}$) for this converter
during steady-state operation.

2. [15 Points] A 60 Hz half-bridge inverter is operated using bipolar PWM with a frequency
modulation index of 101 and an amplitude modulation ratio of 0.90. This system is driven
from a 600 V DC bus. For any waveform sketches identified below, be sure to include both
time and amplitude labels.
a. Draw a schematic diagram of the power stage for this converter. Be sure to identify
where a load would be connected to this converter.
b. Sketch and label the two waveforms required to implement an analog sine-triangle
PWM scheme for this system. Note: you may select the absolute amplitudes for these
waveforms as a design parameter.
c. Sketch and label the phase-to-neutral voltage waveform (VAN) for this converter
during steady-state operation.

Added by Brian A.

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