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# Rectifiers Simulation

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Power Supply of 12V @ 1A

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### Rectifiers Simulation

1. 1. CONVERTER SIMULATIONS DC Supply (12V @ 1A) Presented By FA13-R09-005 Muqadsa Iftikhar FA13-R09-013 Zunaib Ali FA13-R09-024 Madiha Naeem
2. 2. DC Supply Fig. 1(a): AC to AC Transformer followed by Uncontrolled Rectifier LOAD + V0 - I0 ~ AC DC _ ~ AC AC ~ AC Supply 220V ac is converted to desired value of ac and then uncontrolled rectifier is used to convert it to DC.
3. 3. DC Supply Load AC Supply + V0 - I0 DC DC _ ~ AC DC _ _ Fig. 1(b): Uncontrolled Rectifier followed by DC-DC Converter Uncontrolled rectifiers are used to produce a fixed dc from a fixed ac and at the output of rectifier a dc chopper circuit is used which provide variable dc just by changing the duty cycle
4. 4. DC Supply Fig. 1(a): Controlled Rectifier feeding Load Load AC Supply + V0 - I0 ~ AC DC _ Applied voltage can be made variable by using controlled rectifiers which provide variable dc from a fixed ac
5. 5. DC Supply Table: Performance Parameters for Rectifier
6. 6. DC Supply Performance Parameters for Rectifier From formulas mentioned above we can say that: •The lower the value of RR from unity the lower will be the circuit performance. •The greater the value of the FF from unity lower will be the circuit performance. • The lower the value of TUF from unity the lower will be the circuit performance... •The greater the value of the RF from zero lower will be the circuit performance....
7. 7. Conversion Transformer followed by Uncontrolled Rectifier Continuous powergui ac input 12.06 Voltage 1 2 Transformer In1 Specturm Scope4 Scope2 Scope10 signal rms RMS4 R 0.999 Power Factor v+ - O/P Voltage InMean Mean Value1 InMean Mean Value signal magnitude angle Fourier Irms I1rms Theta DSTF DSPF PF zunaib Embedded MATLAB Function 0.999 Distortion Factor 1 Displacement Factor D4 D3 D2 D1 1.005 Current i+ - Ammeter1 i + - Ammeter
8. 8. Conversion Transformer followed by Uncontrolled Rectifier 0 120 240 360 480 600 720 0 20 40 60 80 100 frequency HarmonicsMagnitude Full wave 0 0.005 0.01 0.015 0.02 0.025 0.03 0.035 0 5 10 15 20 time RectifierOutpur Full wave
9. 9. Conversion Transformer followed by Uncontrolled Rectifier S.No Performance Parameters Calculated Values 1 Rectification ratio (RR) 0.81 2 Form factor (FF) 1.11 3 Transfer Utilization Factor (TUF) 0.81 4 Ripple Factor (RF) 0.482 Table # 2: Observed values of RR, FF, TUF & RF taken from Matlab command window
10. 10. Conversion Uncontrolled Rectifier followed by DC-DC Chopper Continuous powergui v + - Voltage Measurement Scope3 Scope 274.4 Rectified Voltage In Mean Mean Value1 In Mean Mean Value [A] From1 Diode3 Diode2 Diode1 Diode Conn1 Conn2 Converter C3 12.05 Buck Output AC Voltage Source Rectifier followed by Chopper
11. 11. Conversion Uncontrolled Rectifier followed by DC-DC Chopper 2 Conn2 1 Conn1 t v + - Vo V R Pulse Generator In Mean Mean Value2 L i + - Io g C E IGBT/Diode [A] Goto1 1.03 Display1 D Clock C2C1 A Chopper
12. 12. Conversion Uncontrolled Rectifier followed by DC-DC Chopper Chopper Output 0 0.005 0.01 0.015 0.02 0.025 -2 0 2 4 6 8 10 12 14 16 Output of Chopper time RectifierOutpur
13. 13. Conversion Uncontrolled Rectifier followed by DC-DC Chopper 0 120 240 360 480 600 720 0 10 20 30 40 50 60 70 80 90 100 frequency HarmonicsMagnitude rectifier with chopper Output Voltage Equation in case we use Capacitive Filter Value of Ra
14. 14. Conversion Controlled Rectifier Continuous pow ergui v + - Voltm gm ak T4 gm ak T3 gm ak T2 gm ak T1 In1 Specturm & other blocks Scope5 Scope1 Scope signal rms RMS4 R 0.9704 Power Factor In Mean Mean Value2 In Mean Mean Value1 signal magnitude angle Fourier Irms I1rms Theta DSTF DSPF PF zunaib Embedded MATLAB Function 0.9762 Distortion Factor 0.994 Displacement Factor 12.4 Converter Output Voltage 1.008 Converter Output Current i+ - C1 i + - C AC 3 & 4 1 & 2
15. 15. Conversion Controlled Rectifier 0 0.002 0.004 0.006 0.008 0.01 0.012 0.014 0.016 0.018 -5 0 5 10 15 20 25 time RectifierOutpur Controlled
16. 16. Conversion Controlled Rectifier 0 120 240 360 480 600 720 0 20 40 60 80 100 120 frequency HarmonicsMagnitude Controlled Rectification
17. 17. Conversion Controlled Rectifier Performance Parameters Calculated Values RR 0.5629 FF 1.3328 TUF 0.4944 RF 0.8811