Since the onset of the COVID-19 pandemic in 2020, our world underwent a profound transformation. Society grappled with the overwhelming impact on healthcare, unemployment, and education. Families faced job losses and financial struggles, making day-to-day survival a priority over education. The shift to remote work and online learning became a necessity, but it came with its share of challenges.
Traditional education took a hit, especially in practical subjects where hands-on experience was crucial. Lack of access to resources and the internet posed obstacles to effective learning. In response, virtual laboratories emerged as a game-changing solution, using simulations to teach intricate topics, particularly in engineering. Studies delved into the effectiveness of virtual labs, highlighting their role in developing practical skills essential for the real world. Additionally, educators explored blended learning, a mix of in-person and online approaches, to foster teamwork, communication, and lifelong learning among students.
The conventional assessment methods, suggests a more immersive approach by integrating Virtual Reality into virtual labs. This idea is illustrated through a project, emphasizing how this innovation could revolutionize learning in subjects that aren't traditionally lab-friendly, offering a realistic and cost-effective alternative.
The microgrid is an innovative and future-proof concept revolutionizing the current energy grid system. It operates as a local energy system with control capabilities, capable of disconnecting from the traditional grid and functioning autonomously. This microgrid integrates renewable and non-renewable energy on a small scale, catering to domestic applications. In the case of the PV-Wind microgrid, prevalent in India, it combines solar and wind energy to supply households and commercial spaces seamlessly.
Creating such microgrids involves both electrical and physical modeling of components for interoperability. Dassault's 3DExperience software was utilized in this project, integrating electrical simulations, product design, assembly design, and creative storytelling into one PV-Wind microgrid model. This model allows for easy replication of similar structures, eliminating the need to create designs from scratch. Moreover, the project offers an immersive experience through the integrated Virtual Reality function, allowing users to engage fully with the models.
Fig 1 Model of the Microgrid
Fig 2 Power consumed by R-L Load
Fig 3 Power consumed by R Load
A Dymola model for a microgrid is illustrated in Fig. 1, featuring parallel connections of solar and wind energy systems with a lead acid battery (48V, 100Ah capacity). The 48V DC supply from the battery is elevated to a constant 362V using a closed-loop-controlled step-up converter. The boosted 362V DC supply is then transformed into pulse width modulated AC using a single-phase full bridge inverter circuit. The inverter employs a unipolar SPWM technique to drive its switches. Finally, the pulse width modulated AC output is converted to a 230V, 50Hz pure sine wave with the assistance of an LC filter.
Fig 4 3D Model of Microgrid in rough terrain
The microgrid's 3D modeling is conducted through CATIA software on the 3DEXPERIENCE platform. The process involves a two-stage construction of the 3D model. Initially, individual 3D parts are designed using part design software, starting with 2D sketches that are later converted into 3D parts using various tools. The final microgrid 3D model is assembled by integrating all these parts using assembly design software. To enhance the model's interactivity, creative experience software adds features. Moreover, the 3D model is integrated with virtual reality, providing newcomers with a comprehensive understanding of the microgrid's layout and functionality.
Virtual Solar Power Plant
Virtual Wind Turbine
Virtual Microgrid Control Station
Digital Solar PV Cell
Digital Wind Turbine
Virtual Reality Lab
Virtual reality (VR) has the potential to enhance education by offering students immersive experiences within the classroom. This content in virtual laboratories allows students to utilize HTC Vive for navigating microgrids. The process involves setting up HTC Vive headgear with Viveport VR and Steam VR, placing base stations for tracking, and using controllers for movement within the microgrid.
The controllers enable users to freely explore the microgrid, with the option to teleport for faster movement. A recorded voice guides users through different sections, explaining their functionality.
This technology helps effectively simulate models and experiments that would otherwise require an even more expensive set up or large spaces to place the equipment. Large scale microgrids were previously inaccessible in the education sector as a practical experiment. The only way to experience something of those proportions was to actually physically visit the site, which is not always feasible. Ultimately, this technology brings in a new perspective into the teaching-learning process.