This preview shows pages 1–3. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: -., ~ r , ",-sJ.~ 76.9 EE 4002 04.12.2002 Name: .. MID SEMESTER TEST NO.2 Answer 3 of 4 questions and solve the numerical problem Question 1 (2 points): For a switch-mode two-quadrant converter: a) Draw the circuit diagram of two-quadrant converter (with transistors and diodes- not necessary with control circuit) connected to the DC motor (armature inductance, resistance and EMF). b) Which transistors and diodes (use symbols e.g. T2, Dl) are conducting when the DC machine'operates as a motor, and which, when it operates as a generator. What is the relation (use sign> or <) between the average output converter voltage and motor EMF at each mode of operation. c) Draw the waveforms of input and output voltages and currents. Write the relations between average input and output voltages and currents. (n\ '. (AJ ,,~ BlAck / \ '&osl- I ( II " a:\ ~ "D . ' I I \ I : \,1 '. i i , . i; T; . \ ! 2- \ \ @ ,..-- vo\~==::~~--_J=-=--'" 6?6S+- VVt+N L E~- Ii ~ \)2- Bt.\ck J fowe r-- Plotrl) S ~'- L I T; ~ D, ~-+~ "';).;IV\yt..e '" _rJ~~-- J f2 J I . ~ 4 '1'" ' Question 2 (2 points):...
View Full Document
This note was uploaded on 01/23/2012 for the course EE 4002 taught by Professor Scalzo during the Fall '06 term at LSU.
- Fall '06