Virtual Lab Session of Power Electronics-1
The Department of EEE organized a specialized virtual laboratory session for the 5th-semester students focused on the Power Electronics-I curriculum, utilizing the highly accessible and interactive Virtual Labs platform provided by IIT Bombay. The rationale for this initiative was to provide students with a scalable and risk-free environment to perform complex power converter and switching device experiments that might be challenging or costly to conduct using physical hardware.
The session aimed to enhance the students understanding of theoretical concepts by allowing them to observe the real-time behavior, transient responses, and performance characteristics of various power electronic circuits under different operating conditions.
The V-Lab session was structured to be highly interactive and hands-on. Each experiment was initiated with a brief theoretical review followed by a guided demonstration of the V-Lab interface. Students were provided dedicated system access to individually perform the experiments, record readings, and analyze the resulting waveforms.
The session covered fundamental and advanced concepts in power conditioning and control, allowing students to systematically study components and systems central to modern power engineering applications.
Some experiments from the Power Electronics domain were successfully covered during the virtual laboratory session which includes:
Characteristics of Controlled Switching Power Devices: This experiment focused on determining the static and dynamic operating characteristics of critical power semiconductor switches (e.g., SCR, MOSFET, IGBT), which are the fundamental building blocks of all power converters.
Performance Measurement and Analysis of Single-phase AC-DC Controlled Bridge Rectifier: Students analyzed the input current and output voltage waveforms, power factor, and harmonic content of a single-phase half-controlled or fully-controlled bridge rectifier circuit.
Performance Measurement and Analysis of Non-isolated DC-DC Boost Converter: This involved studying the operation of a step-up converter to understand the relationship between duty cycle, input voltage, and the magnified output DC voltage.
Performance Measurement and Analysis of Single-phase AC Voltage Controller: The experiment focused on controlling the AC output voltage applied to a load by varying the firing angle of the Triac/SCRs, analyzing its effect on RMS output voltage and harmonics.
Single-phase IGBT Inverter under Sinusoidal PWM Control: Students implemented and analyzed the output voltage control and harmonic reduction capabilities of a single-phase inverter using Sinusoidal Pulse Width Modulation (SPWM) techniques.
Three-phase IGBT Inverter under Sinusoidal PWM Control: This extended the concept to a three-phase system, allowing students to generate balanced three-phase AC output voltage with control over both frequency and magnitude.
Performance Measurement and Analysis of Isolated DC-DC Flyback Converter: This specialized experiment allowed students to explore the use of a transformer for isolation and voltage control in a switched-mode power supply topology.
The virtual lab session successfully provided the 5th-semester EEE students with crucial practical exposure to the behavior and analysis of complex Power Electronics circuits, thereby significantly enhancing their conceptual clarity on topics like pulse-width modulation (PWM) control, converter operation, and switching characteristics. By using the V-Lab platform to perform these seven core experiments—ranging from the characteristics of power devices and controlled rectifiers to advanced DC-DC converters and three-phase inverters—students gained essential proficiency in analyzing electrical waveforms and using simulation tools, a critical skill set for future design and testing roles in the industry. The successful completion of this module effectively prepared students for advanced concepts in subsequent courses, and the Department of EEE recommends that V-Lab sessions be maintained as an integral, supplementary component of the laboratory curriculum for subjects involving complex electrical system simulations.
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- Dr.vishnuvardhan road, Channasandra R R Nagar post
- Bengaluru, Karnataka
- India 560098
Dept. of EEE, RNS Institute of Technology, Bangalore.
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