Electrotechnical Systems

70 Electrotechnical Systems

QVIVIVI

bc acab ab c

=++

0 577.( )

(3.11)

The inputs are the vectors of the phase voltages and currents; the output is the vector

[P Q].

Besides, there is the analogous block in the folder Extra library/Phasor Library,

which is used only in Phasor mode simulation.

The block dq0-Based Active & Reactive Power uses the vectors [V

d

V

q

V

0

] and [I

d

I

q

I

0

]

as the inputs:

PVIV

IV

I

dd qq

=++

15 2

00

.( )

(3.12)

QVIVI

qd dq

=−

15.( )

(3.13)

The block Three-Phase Sequence Analyzer calculates the positive- (direct), negative-

(reverse), and zero-sequence components of the three-phase signal. Remember that

the voltage phasors V

a

, V

b

, V

c

(or other ...