ELE 754 Midterm: ELE 754 Fall 2013 Midterm Solution

• School: Ryerson University
• Department: Electrical Engineering
• Course: ELE 754
• Professor: All

Document Summary

You can use one page letter size (8. 5"xll" or equivalent, double sided) assistant sheet prepared by yourself: show details of derivation steps. Part of questions mayor may not be related: total 7 pages include cover page (this page) Student name: _ __ _ _ ______________ ____ Figure 1 one quadrant chopper based dc motor drives. 0, r; vn ~ / tort":" "d f) ~ b, ~",o. r =o 4it1s. V~l ttlrc -i) f-aj l-m/j1 ~ ""t e"u!-r _( \ den: find the armature current ripple, mo" October 23~ 2013: calculate the average (dc) armature voltage vo,de and average (dc) armature current io,de" : if the motor is supplied by a two quadrant chopper, find the armature current ripple. Assume that that the dc voltage, duty cycle and back emf remain same. _ itmj( -::::: ~ i-e - 1$/t ) t ( (cid:173)_ ba(cid:173) Consider the buck converter with controller shown in figure 2.