Post by Rohit Balivada

⚡ Single-Phase Fully Controlled Rectifier Simulation using MATLAB/Simulink As part of my Power Electronics journey, I simulated a Single-Phase Fully Controlled Rectifier to study how varying the thyristor firing angle influences the output RMS voltage. Simulation Parameters: 🔹 Supply Voltage = 230 V (RMS), 50 Hz 🔹 Load Resistance = 10 Ω 🔹 Single-Phase Fully Controlled Bridge Rectifier (4 Thyristors) Observed Results: 📌 Case 1 Firing Angle (α) = 36° Output RMS Voltage = 222.6 V 📌 Case 2 Firing Angle (α) = 72° Output RMS Voltage = 190.5 V 📌 Case 3 Firing Angle (α) = 108° Output RMS Voltage = 126.9 V 📌 Case 4 Firing Angle (α) = 144° Output RMS Voltage = 50.25 V Key Observation: 🔍 As the firing angle increases, the conduction interval of the thyristors decreases, resulting in a lower RMS output voltage. 🔍 As the firing angle decreases, the thyristors conduct for a longer duration, allowing more of the input waveform to reach the load and producing a higher RMS output voltage. This simulation clearly demonstrates how phase-angle control provides precise regulation of the output voltage in a fully controlled rectifier. Through this simulation, I strengthened my understanding of: ✅ Phase Angle Control ✅ Fully Controlled Bridge Rectifier Operation ✅ Thyristor-Based AC-to-DC Conversion ✅ Practical Applications of Power Electronics Fully controlled rectifiers are widely used in variable DC power supplies, battery charging systems, DC motor drives, industrial automation, and high-power converter applications. Continuously building my practical understanding of Power Electronics through MATLAB/Simulink simulations. #PowerElectronics #FullyControlledRectifier #Thyristor #MATLAB #Simulink #ElectricalEngineering #EEE #ControlledRectifier #PowerConversion #EngineeringStudent #LearningByDoing

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