Unleashing the Future: India's Student Engineers Lead the Charge in Electric Mobility
The Rise of Formula Manipal: A Student Team's Electric Revolution
Imagine a group of passionate student engineers, their eyes set on the horizon of sustainable mobility. This is the story of Formula Manipal, a team that has taken India's engineering prowess to the global stage, showcasing their talent and innovation in electric vehicle (EV) engineering.
From Combustion to Electric: A Strategic Leap
Formula Manipal, rooted at the Manipal Institute of Technology, has been crafting race cars since 2007. Their journey has seen them represent India in prestigious Formula Student competitions across Europe, securing impressive rankings year after year. But here's where it gets controversial: in 2024, they made a bold move, shifting from combustion engines to electric propulsion. Within a remarkable ten months, they birthed their first all-electric prototype, a testament to their dedication and expertise.
FMXXV: The Electric Revolution Begins
FMXXV, the fourteenth car in their lineage, marks a monumental shift for Formula Manipal. It's their electric race car, designed and built after fully embracing electric power. The team's meticulous approach was guided by four key pillars:
- Performance: Maximizing acceleration, cornering precision, and handling.
- Reliability: Ensuring endurance and repeatability in dynamic races.
- Safety: Adhering to Formula Student safety standards and electrical regulations.
- Serviceability: Prioritizing ease of maintenance and modular subsystem integration.
This structured strategy helped them optimize efficiency and mitigate risks across all subsystems.
Structural Marvels: Chassis and Design
The car's chassis, crafted from AISI 4130 Chromoly steel, is a masterpiece of engineering. Designed through Finite Element Analysis (FEA), it ensures rigidity, crash safety, and optimized weight. The result? A robust structure that enhances stiffness and simplifies maintenance for race operations.
Powertrain Revolution: Motor Configuration
Formula Manipal opted for a single-motor rear-wheel-drive layout, striking a balance between performance, efficiency, and packaging simplicity. After extensive studies, they settled on a single high-performance motor configuration. The EMRAX 208 HV LC axial-flux PMSM was chosen for its compact design, high power density, and proven reliability. With a peak power of 80 kW, 140 Nm peak torque, and 100 Nm continuous torque, it delivers an impressive power-to-weight ratio of approximately 5.7 kW/kg.
The motor is coupled with a Rinehart PM100DZ inverter, ensuring efficient torque control and seamless power delivery. Simulation-based validation confirmed optimal performance, enabling strong acceleration and stable handling.
Key Specifications:
- Motor: EMRAX 208 HV LC (Axial Flux PMSM)
- Inverter: Rinehart PM100DZ
- Peak Power: 80 kW
- Peak Torque: 240 Nm
- Cooling: Liquid-cooled system
- Layout: Single-motor rear-wheel drive
Energy Storage: The Heart of the Machine
The accumulator, engineered with precision, delivers high energy density and thermal stability while adhering to strict safety and voltage limits. Built using Molicel P42A cylindrical NMC cells in a 106s4p configuration, it provides a total energy of 7.5 kWh at a nominal voltage of 380 V (max 600 V).
The pack is divided into six segments to meet rulebook constraints, with lightweight polycarbonate endplates enhancing safety and structural rigidity. SigmaClad 60 busbars offer optimal conductivity and weight efficiency. A semi-custom BMS with a master-slave architecture ensures continuous monitoring and fault detection, with an integrated Insulation Monitoring Device (IMD) for automatic shutdown in case of isolation failure.
Key Specifications:
- Battery Chemistry: Lithium-ion NMC (Molicel P42A)
- Configuration: 106s4p (7.5 kWh, 380 V nominal)
- Cooling: Forced-air convection
- Busbar Material: SigmaClad 60 (Ni–Steel–Cu composite)
- BMS: Master–slave architecture with ISO-SPI & CAN communication
- Safety Systems: Active cell balancing, IMD-based fault shutdown, temperature monitoring
Cooling and Aerodynamics: A Balanced Approach
Cooling and weight balance were engineered as integrated systems, optimizing airflow efficiency through CFD simulations. The result? A thermally efficient, aerodynamically balanced car with predictable handling and improved dynamic response. A rear-mounted radiator configuration, validated through bench flow testing, ensures superior aerodynamic performance and favorable weight distribution.
Vehicle Dynamics and Braking: Precision Engineering
Vehicle dynamics were optimized using Formula SAE data, achieving the perfect balance between grip, stability, and predictability. Suspension geometry was refined for maximum contact patch stability, and camber, toe, and Ackermann parameters were tuned for precise handling. The braking system was engineered for maximum and consistent stopping performance, with rotors designed for simultaneous four-wheel lock. ANSYS CFD simulations verified their thermal capacity, ensuring reliable operation without compromise.
Manufacturing Excellence: A Hands-on Approach
Most subsystems, including the chassis, accumulator casing, and cooling ducts, were designed and manufactured in-house, reflecting the team's commitment to self-reliance and precision. Each component underwent rigorous validation, including low-speed shakedowns and endurance simulations, ensuring technical reliability and a deep understanding of the car's performance.
Performance and Results: A Test of Endurance
At Formula Bharat 2025, Formula Manipal's electric powertrain proved its mettle. They achieved:
- 3rd position nationwide
- 2nd place in Statics
- 3rd place in Cost and Manufacturing
- Best Powertrain Design award
- Successful completion of all electrical and mechanical inspections
The vehicle's stable performance across acceleration, endurance, and efficiency events validated the robustness of their design approach.
Future Horizons: Driverless Electric Race Car
The next chapter for Formula Manipal is an exciting one—the development of their first driverless electric race car. This evolution combines cutting-edge technology with their expertise in electric powertrains. They're also refining battery packaging, weight optimization, and motor control efficiency for future competition vehicles. This transition is not just a technical upgrade; it's a testament to their spirit of innovation, a drive to lead India's electric motorsport future.
And this is the part most people miss: the impact of student-led initiatives like Formula Manipal. They inspire a new generation of engineers, pushing the boundaries of what's possible and shaping the future of sustainable mobility. So, what do you think? Is this the future of motorsport? Let's discuss in the comments!
