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VOLTAGE ORIENTED CONTROL – SIMULATION

Figure 3.29 : stability analysis of voltage controller

The open and closed loop transfer function are noted respectively

and

.

(3.42)

(3.43)

As the previous case, if

off frequency

rad/s.

There is only one pole for

and ,

is a first order system, low pass filter, with a cut

and it’s located at

(negative Real part of the Imaginary domain

means stability).

PROPORTIONAL AND INTEGRAL CONTROL

As we explain during the voltage controller design, we decided to add a small integration

constant. The open and closed loop transfer function are noted respectively

and

.

(3.44)

(3.45)

WITH ACTIVE DAMPING GA In this case, we consider the following diagram.

Figure 3.30 : stability analysis of voltage controller with active damping

(3.46)

(3.47)

3.6.3 Complete controller

To study the complete controller, we consider the following diagram.

42

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