Course - Power electronics 2: Self-commutated power converters

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/resistive-inductive load and visualisation of load current and rotating field vector
• Storage case
• 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 four-quadrant operation
• Recording the control and operating characteristics for single-quadrant 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 three-phase 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.