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Switching Power Converters, 2nd Edition by Dorin O. Neacsu

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6

Practical Aspects in Building Three-Phase Power Converters

6.1    SELECTION OF POWER DEVICES IN A THREE-PHASE INVERTER

Previous chapters have explained the operation of a three-phase converter and the need for pulse width modulation (PWM). This chapter investigates the three phase power converter as a system, outlining packaging and protection problems.

Power semiconductor devices for a three-phase power converter should be selected after determining the power converter ratings from the application requirements and taking into account the cooling and stress requirements for a given power level.

6.1.1    MOTOR DRIVES

When the power converter is used within a motor drive, its rating depends on the motor characteristics as it follows.

6.1.1.1    Load ...

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