The Machine-Side PWM Converter Control

To make the control system open for motoring & generating, we shall consider that only torque vs speed is performed. In core, a functional generator produces the desired torque versus speed curve desired from the IG (Fig 5.2-a to Fig 5.2-c). For motor starting, the torque vs. speed may decrease notably with speed (Fig 5.2-a)

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Composite series magnetic Circuit

For a series magnetic circuit having n parts, the total reluctance S is given by the following series of reluctances:

S=S1+S2+· · ·+Sn

(This is just like the resistors that are connected in series in an electrical circuit.)

The problems illustrated below will make h concept more clear.

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