
27-6 Power Electronics and Motor Drives
e variables x are dened as the rotor speed, scalar and vector products of two vectors from the vector
m
odel of the induction motor, and square of the ux vector.
e multiscalar model of type 2 may be based on the stator ux vector and takes the following form:
z A z g (z) B u m
z z z z
= + + + ,
(27.15)
where
z = [z
11
, z
12
, z
21
, z
22
]
T
g
z
(z) = [0, g
z12
(z), 0, g
z22
(z)]
T
B
z
=
0
0
22 32 42
21 31 41
b b b
b b b
z z z
z z z
T
u
z
= [u
z1
, u
z2
]
T
A
z
is the matrix of coecients and one of the elements b
z31
and b
z32
may be equal to zero
e state variables z are dened similarly as variables x for the induction motor model of ...