UniTrain®
UniTrain is a multimedia e-learning system with integrated, mobile electronics lab for general education and
advanced training in electrical engineering and electronics.
UniTrain courses
UniTrain courses
Lucas Nülle GmbH
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www.lucas-nuelle.com
UniTrain power electronics courses
UniTrain power electronics courses
UniTrain multimedia courses in power electronics use numerous experiments and animations to explain the
design and function of various types of converters. Students taking the courses are familiarised with the various
types of power semiconductor devices and become familiar with the common circuits in which they are used.
Different types of circuits are used in a large number of experiments that deal with triggering, modulation and
instrumentation involving multimeters and oscilloscope as well as deriving the properties and capabilities of
converters.
Lucas Nülle GmbH
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www.lucas-nuelle.com
List of articles:
Pos.
Product name
Bestell-Nr.
1 Course - Power electronics 1: Line-commutated power
converters, 3-phase
SO4204-7N
Anz.
1
Includes:
1 Experiment card with thyristors and diodes for assembling
line-commutated converter circuits, featuring microprocessor
control
1 Experiment card with resistive, inductive and capacitive
loads
CD-ROM with Labsoft browser and course software
Course contents:
Introduction to the most important measurable variables in
power electronics
Introduction to the design and function of power
semiconductors and their control
Introduction to the design and function of single-phase and
three-phase rectifiers
Recording the operating characteristics of uncontrolled
converter circuits: M1, M2, M3, B2, B6
Recording the control and operating characteristics of halfcontrolled converter circuits: B2HZ, B2HA, B2HK, B6HA, B6HK
Recording the control and operating characteristics of fully
controlled converter circuits: M1C, M2C, M3C, B2C, B6C
Recording the control and operating characteristics of singlephase and three-phase AC power controllers
Measurement and analysis of power in converter circuits
Analysis of variables using FFT
Course duration 5 h approx.
Lucas Nülle GmbH
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www.lucas-nuelle.com
2 Course - Power electronics 2: Self-commutated power converters
SO4204-7M
1
Includes:
1 Experiment card with self-commutated power converter,
microcontroller controlled PWM with 6 MOSFET transistors
and intermediate voltage circuit (40 V, 1A), Software-controlled
multiplexer for simultaneous measurement of multiple
voltages and currents, visualisation of MOSFET switching
states via LED
1 Experiment card with three-phase resistive/resistiveinductive load and visualisation of load current and rotating
field vector
CD-ROM with Labsoft browser and course software
Course contents:
Introduction to the principle of PWM for generating variable
DC voltage
Investigation of load response for single-quadrant and fourquadrant operation
Recording the control and operating characteristics for singlequadrant and four-quadrant operation
Introduction to the principle of PWM for generating variable AC
voltage
Signal measurements over time of amplitude and signal
modulation by AC converters
Introduction to design and function of three-phase converters
Introduction to the principles of block commutation, sine,
super-sine and space-vector modulation for generating threephase alternating voltages
Analysis of the various modulation methods by measuring
signal response over time
Determining the control response for various modulation
methods
Investigating the influence of operating frequency by
measurement
Comparison of various modulation methods using harmonic
analysis (FFT)
Course duration: 5 h approx.
Lucas Nülle GmbH
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www.lucas-nuelle.com
3 Course - Power electronics 3: Frequency converter drives
SO4204-7P
1
Includes:
1 Experiment card with DC link, charging circuit for DC link
capacitors and braking chopper
CD-ROM with Labsoft browser and course software
To conduct this course the following are also needed:
Power electronics course 2: Self-commutated converters (SO42047M)
Electrical machines course 2: 3-phase machines (SO4204-7T)
Course contents:
Introduction to the design of modern frequency converters
Introduction to generating DC link voltage
Introduction to V/f characteristic and boost
Recognising the need for speed ramps
Operating 3-phase motors with frequency converters
Introduction to the design and function of braking choppers
Introduction to "87-Hz technology"
Recording and analysis of current, voltage and power
Course duration 5 h approx.
Lucas Nülle GmbH
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www.lucas-nuelle.com
4 Course - Power electronics 4: Active power factor correction PFC
SO4204-7Q
1
Includes:
1 Experiment card with active power factor correction,
conventional B2 rectifier circuit and resistive load
CD-ROM with Labsoft browser and course software
Course contents:
Introduction to the principle of power factor correction
Reasons for using power factor correction
Areas of application for power factor correction
Introduction to various types of power factor correction
Introduction to the design and function of an active power
factor correction circuit
Comparison with conventional bridge rectifier circuits
Recording and analysis of current, voltage and power
Analysis of variables using FFT
Course duration 3 h approx.
Lucas Nülle GmbH
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www.lucas-nuelle.com