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CHAPTER 2 SINGLE PHASE PULSE WIDTH MODULATED …

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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.

2.3.1 SPWM With Bipolar Switching In this scheme the diagonally opposite transistors S11, S22 and S21 and S12 are turned on or turned off at the same time. The output of leg A is equal and opposite to the output of leg B. The output voltage is determined by comparing the control signal,

  Bipolar

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