Presentation on theme: "POWER ELECTRONICS Instructor: Eng.Moayed N. EL Mobaied The Islamic University of Gaza Faculty of Engineering Electrical Engineering Department بسم الله."— Presentation transcript:
POWER ELECTRONICS Instructor: Eng.Moayed N. EL Mobaied The Islamic University of Gaza Faculty of Engineering Electrical Engineering Department بسم الله الرحمن الرحيم EELE 5450 — Fall 2009-2010 Lecture 30
Dc Chopper Dc Choppers are of Two Types 1- Buck converter (Step-down converter) 2- Boost converter (Step-up converter) I n step down chopper output voltage is less than input voltage. In step up chopper output voltage is more than input voltage.
Dc Chopper Problem Input to the step up chopper is 200 V. The output required is 600 V. If the conducting time of thyristor is 200 sec. Compute –Chopping frequency, –If the pulse width is halved for constant frequency of operation, find the new output voltage.
3 Control system The design of intelligent control systems has become an area of modern research. PID Controller Fuzzy Controller System ModelSystemExperience Fuzzy-PID controller Conventional Controller
34 5- Speed Controllers Design Block diagram for the system
35 Three phase induction motor inverter 5- Speed Controllers Design
36 Three phase induction motor inverter 5- Speed Controllers Design
37 Three phase induction motor inverter Mosfet IGBT Thyristor 5- Speed Controllers Design
38 Three phase induction motor inverter 5- Speed Controllers Design
39 Schematic diagram for one line of the inverter 5- Speed Controllers Design
40 Software implementation of the inverter 5- Speed Controllers Design
41 Deadband between upper and lower signals 5- Speed Controllers Design
42 Sine Wave Generation 5- Speed Controllers Design
44 Sine Wave Generation 5- Speed Controllers Design
45 Sine Table skipping method for frequency variable 5- Speed Controllers Design
Your consent to our cookies if you continue to use this website.