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Solar PV Grid-Tie Inverter Design and MPPT Implementation

Target year: TE Sem 5-6 (Mini-Project-IIA/IIB) AICTE: 3 credits · ~75 hrs Bloom: Analyze MU CBCS: EE601/EE701 Mini-Project 2A/2B

Real-world project · AICTE-aligned · AI-graded · Audit-ready certificate

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Core skills

About this project

Design a 1 kW grid-tie solar inverter with MPPT (Perturb & Observe algorithm). Simulate full power stage in MATLAB Simulink, design boost converter + H-bridge inverter, implement MPPT on STM32, validate efficiency vs irradiance curve.

Course Learning Outcomes (CLOs):
CLO1: Apply Maximum Power Point Tracking algorithms.
CLO2: Design DC-DC + DC-AC converter stages.
CLO3: Simulate complete power stage in Simulink.
CLO4: Implement digital control on a microcontroller.
CLO5: Characterize a power converter via lab measurements.

Industry/societal relevance: India targets 280 GW solar by 2030; Tata Power Solar, Adani Green, ReNew Power, Waaree Energies hire power-electronics engineers heavily.

Milestones

1. Architecture + Simulink Model

15 marks 12d

Two-stage inverter block diagram. Simulink model with PV array + boost + H-bridge + LC filter. Validate at 1kW STC.

2. MPPT Algorithm Implementation

20 marks 14d

Implement P&O in Simulink. Test on irradiance step (1000 → 500 W/m²). Show tracking <1s.

3. STM32 Firmware Port

25 marks 18d

Port MPPT to STM32. Use HW PWM + ADC. Validate on a small DC-DC test rig.

4. Hardware Inverter Build

20 marks 18d

Assemble H-bridge with IGBTs + driver. Sync with grid using PLL block (simulated/real). Measure THD.

5. Efficiency Test + Report

20 marks 13d

Sweep irradiance, measure efficiency. Plot η-vs-Pin. Document 10-page report.

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Skills you'll learn

Power ElectronicsMPPT algorithms (P&OIncremental Conductance)STM32 firmwareMATLAB SimulinkInverter topologiesGrid synchronization (PLL)

Tools used

MATLAB R2024 + Simulink + Simscape ElectricalSTM32F4-DiscoveryIGBT module (lab kit)Solar simulator (or DC source)DSOPower analyzer

Prerequisites

Power Electronics; Embedded Systems; MATLAB intermediate; one circuit-design tool

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Solar PV Grid-Tie Inverter Design and MPPT Implementation

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