It is desired to convert 60 Hz 120 Vac (rms) to 240 Vac (rms), to power a 1 kW a

Question

It is desired to convert 60 Hz 120 Vac (rms) to 240 Vac (rms), to power a 1 kW ac load. Although a conventional 60 Hz ac transformer could be used in this application, such a transformer is large and heavy. Instead, it is decided to use a boost converter switching at 100 kHz, as illustrated in Fig. 1. This converter is small and lightweight. It operates at constant duty cycle of approximately 0.5, so that v(t) = 2vg(t). The elements L and C are chosen to filter the switching harmonics and have small switching ripples; however, they have negligible effect on the 60 Hz components of the waveforms. The load is a linear impedance

(d)

Determine the polarities of the switch on-state currents and off-state
voltages. Do the polarities vary with time?

(e)

State how each switch can be realized using transistors and/or diodes, and whether the realization requires single-quadrant, current-bidirectional twoquadrant, voltage-bidirectional two-quadrant, or four-quadrant switches. Sketch a schematic of the converter power stage, which includes your realization of the switching elements using semiconductor power devices

Explanation / Answer

could you please tell me the name of the book, from which you have taken this question

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