ee_285_Assignment_9

a) It is important to manage heat dissipation for power control components such as Thyristor. Draw a typical heatsink for a semiconductor power device and the equivalent heat schematic. b) Explain the rate of change of voltage of a thyristor in relation to reverse-biased. c) Draw and explain how a 3-phase fully controlled converter operates.

Discuss the significance of integrated circuits (ICs) in the development of microchips and their impact on miniaturization and performance.

Q5. Predictive maintenance is to be applied to an industrial conveying system. a) Discuss and illustrate the difference between reactive, preventative, and predictive maintenance. b) Describe several of the techniques that could be used to develop a predictive maintenance system for the conveyor system. Consider some of the sensing techniques that might be used and what parameters might be measured to detect component degradation. c) If the predictive maintenance system described in b) detects that the conveyor system is vibrating abnormally, discuss what condition this could indicate and what maintenance might be required.

3.16 A three-phase, full-wave half-controlled rectifier bridge circuit is operating at a delay angle a = 67° when supplying full power. The per-phase inductance of the coupled transformer is 2 mH. The input voltage has an rms magnitude of 230 V per phase at 50 Hz. The load current in the d.c. side is 15 A at 200 V. It is required to: (a) Obtain the drop in the d.c. voltage due to current overlap. (b) Calculate the rms secondary voltage of the transformer. (c) Calculate the overlap angle. (d) Obtain the recovery angle while the converter in operating in the inversion mode with 15 A, 200 V d.c. input. (e) Obtain the firing angle for the conditions in (d). [Ans: (a) 4.5 V, (b) 450 V, (c) 1.06°, (d) 67.14°, (e) 111.8°]

3.16 A three-phase, full-wave half-controlled rectifier bridge circuit is operating at a delay angle a = 67° when supplying full power. The per-phase inductance of the coupled transformer is 2 mH. The input voltage has an rms magnitude of 230 V per phase at 50 Hz. The load current in the d.c. side is 15 A at 200 V. It is required to: (a) Obtain the drop in the d.c. voltage due to current overlap.

Not: I need also pictures cct diagram and result Question: I need a MATLAB/Simulink model for a Boost Converter used to charge a battery, powered by a PV solar panel. The model should include: 1. A PV solar panel as the input power source. 2. A Boost Converter circuit for voltage regulation. 3. A battery charging system. 4. Simulation results showing voltage, current, and efficiency of the system. Important: Please provide: 1. The Simulink file of the model. 2. Clear screenshots showing the circuit connections in MATLAB/Simulink. 3. Screenshots of the simulation results (voltage, current, efficiency, etc.).