4 Chopper-Controlled DC Motor Drive
4 Chopper-Controlled DC Motor Drive
4 Chopper-Controlled DC Motor Drive
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
• Hence,<br />
i<br />
a<br />
I<br />
a1<br />
(t<br />
x<br />
=<br />
Vs<br />
−<br />
R<br />
a<br />
+ dT) = −<br />
E<br />
(1 − e<br />
E<br />
R<br />
a<br />
−dT /<br />
(1 − e<br />
Ta<br />
t<br />
−<br />
T<br />
x<br />
a<br />
)<br />
) +<br />
• tx is evaluated from (4.25) and the above<br />
eqs. as<br />
tx = Ta<br />
loge[1<br />
+<br />
I<br />
a1<br />
R<br />
E<br />
a<br />
]<br />
I<br />
a1<br />
e<br />
t<br />
−<br />
T<br />
x<br />
a