Professional Educational Seminars

Although piezoelectricity was discovered about 100 years ago, piezoelectric elements (PE) became only recently a practical alternative in some power conversion applications. In a number of applications, the piezoelectric approach was shown to have a clear advantage over alternative solutions. In other applications, piezoelectric elements will clearly be a preferred choice if and when their price is lowered. Notwithstanding the relative simple structure of piezoelectric elements, the design of the power electronics circuitry associated with them is far from being simple or trivial.

   The objective of this seminar is to introduce the attendees to PE technology from the power electronics point of view. This will be accomplished by first reviewing the models of native PE devices and when loaded by rectifiers and mechanical loads. This overview will then be used in the presentation of drivers and rectifiers. Finally, the seminar will address some specific problems that haunt designers such as the issue of instability that may develop when a PE drives fluorescent lamps.

    The seminar is of intermediate level intended for active workers in the field as well as for novices who wish to learn about PE and applications. Prof. Ben-Yaakov will present the seminar.




The seminar will cover, with many examples, the topics:


1. Introduction  (20min)

            • Piezoelectricity

            • Brief overview of Piezoelectric devices


                        •Vibrating vans


                        •Micro-Power Generators/Dampers




2. Models of Piezoelectric devices  (40 min)

            •Mechanical-Electrical analogy



            •Vibrating vans



            •Transformers (PT)

            •Model parameters extraction


3. Drivers  (40 min)


    •Vibrating vans


    •Transformers (PT)


4. Rectifiers  (30 min)

    •Inductive filters

    •Capacitive filters

5. Resonant rectifier (20 min)

6. PT based CCFL Ballasts (30min)

            • Start up

            • The stability issue

            • Incremental impedances

            • Envelope simulation





7. Q&A


Control Design of PWM Converters: The User Friendly Approach

Computer Aided Analysis and Design

of Single Phase APFC Stages


Feedback Design in Operational Amplifiers and  PWM Converters:

The User Friendly Approach


Fundamentals of PWM Converters


Introduction to CMOS Operational Amplifiers


Control Design of PWM Converters:

 The Intuitive Approach


Fundumentals of PWM Converters


Computer Aided design of Power Factor Correction Systems


Power Electronics of Piezoelectric Elements

Introduction to Power Management for Portables

Dynamics and Stability of Switch Mode Converters

Modern Soft Switched Converter Topologies


Control Design of PWM Converters: The User Friendly Approach

Switched Capacitors Converters


Essentials of Switch Mode Converters


מגברי שרת מודרניים

Power Electronics of Piezoelectric Elements


Digital Control Design of PWM Converters: The Time-Domain Approach