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CHAPTER 2 SINGLE PHASE PULSE WIDTH MODULATED …

CHAPTER 2 SINGLE PHASE PULSE WIDTH MODULATED INVERTERS Introduction The dc-ac converter, also known as the inverter, converts dc power to ac power at desired output voltage and frequency. The dc power input to the inverter is obtained from an existing power supply network or from a rotating alternator through a rectifier or a battery, fuel cell, photovoltaic array or magneto hydrodynamic generator. The filter capacitor across the input terminals of the inverter provides a constant dc link voltage.

To satisfy the Kirchoffs Voltage law (KVL) constraint, the switches on the same leg are not turned on at the same time, which gives the condition S11+S12 = 1 (2.4) for each leg of the inverter. This enables the output voltage to fluctuate between 2 Vd and 2

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