DC-AC PWM Inverter Operation

The lab investigates the operation of a MOSFETs full-bridge, driven by a sinusoidal pulsed width modulation, under different load impedance conditions, and the relationships among physical parameters and operating conditions determining the amplitude of output current and voltage AC components.
by Texas Instruments, and Dr. Nicola Femia | University of Salerno
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This is lab 9 of 12 in the course, Power Electronics.

LEARNING OBJECTIVES


After completing this lab, students will be able to:
  1. Given a DC-AC PWM Inverter, with specified modulation and switching PWM signals setup, you will calculate the amplitude of sinusoidal and ripple components of AC current and voltage, with specified units and accuracy, and determine the L-C output filter parameters needed to limit the amplitude of ripple components below given limits, under different switching frequency operating conditions.
  2. Given a DC-AC PWM Inverter, you will simulate its operation under different PWM signals and L-C filter setup, to analyze the amplitude of sinusoidal and ripple components of AC current and voltage, and verify their consistency with theoretical predictions.
  3. Given a real DC-AC PWM Inverter with configurable PWM signals and L-C output filter, you will observe the AC load voltage waveform and measure the amplitude of sinusoidal and ripple components, with specified units and accuracy, under different L-C output filter and PWM signal setups.

 

REQUIRED SKILLS

 
  • Basic proficiency using Multisim Live
  • Basic proficiency using ELVIS III Instruments
  • Basic proficiency in circuits and analog electronics

NI ELVIS III

Engineering laboratory solution for project-based learning that combines instrumentation and embedded design with a web-driven experience, delivering a greater understanding of engineering fundamentals and system design.

TI Power Electronics Board for NI ELVIS III

Application board for NI ELVIS III which provides a hands-on approach to power electronics using functional blocks and TI circuits to understand each component in a power electronics system.

Multisim Live

Multisim Live is an online, touch-optimized component of Multisim, so students can design and simulate their circuits anywhere, anytime, on any device.

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