Psim tutorial- tiristor

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  • 1. PSIM: A Tutorial
  • 2. Presentation Outline What is PSIM? Circuit Structure Getting started with PSIM Hands-on Examples
  • 3. What is PSIM? PSIM is a simulation package specifically designed for power electronics and control circuits. Manufactured by Powersim Inc. ( www.powersimtech.com ) It allows fast simulation and it has a friendly user interface. PSIM is indicated for system-level simulation, control loop design and motor drive system studies. The basic PSIM package consists of three programs: circuit schematic program (SIMCAD), simulator program (PSIM), and waveform display program (SIMVIEW).
  • 4. Circuit Structure Power Circuit Switch SensorsControllers Control Circuit
  • 5. Circuit Structure Power Control Switch Sensors Circuit Circuit Controllers CurrentSwitching S-domain On-Off devices Voltage blocks controllersRLC branches  Torque Z-domain PWMTransformers Speed blocks controllersCoupled Logic Alpha inductors components controllers Non-linear components
  • 6. Getting Started with PSIM  Start PSIM: go to c:PSIM6_DEMO -> PSIM Newcircuit
  • 7. Getting Started with PSIM  Create a new circuitMenuToolba rCircuitwindow Element toolbar
  • 8. Getting Started with PSIM Example 1 – 1st Order System 1 kΩ50V 50nF 45 k Ω
  • 9. Example 1 – 1st Order System Insert a DC Voltage Source from the Element Toolbar.
  • 10. Example 1 – 1st Order SystemThe DC Voltage Sourcecan also be found inElements > Sources >Voltage > DC
  • 11. Example 1 – 1st Order SystemAdd two Resistors to theAdd two Resistors to thecircuit. To rotate an element click with the right button… … or use the icon Rotate the Selection.
  • 12. Example 1 – 1st Order System Add a Capacitor to the circuit.
  • 13. Example 1 – 1st Order SystemTo connect the elementsuse the Wire tool. Left-click on the circuit and drag the line with the mouse.
  • 14. Example 1 – 1st Order System Insert a Ground element.
  • 15. Example 1 – 1st Order System Set all the parameters values.Double-click on the element to set its parameters. Just close the window to set the new value.
  • 16. Example 1 – 1st Order SystemSet the simulation parameters: Insert a Simulation Control block.
  • 17. Example 1 – 1st Order SystemSet the simulation parameters: Time Step and Total Time.
  • 18. Example 1 – 1st Order SystemInsert a Voltage Probe (node to ground).Double-click on the voltage probe to change its name to Vo.
  • 19. Example 1 – 1st Order System Start the simulation
  • 20. Example 1 – 1st Order System Select the variable Vo.
  • 21. Example 1 – 1st Order System Set the colors.
  • 22. Example 1 – 1st Order SystemUse the Zoom tool and buttons toselect a specific area you want to see.
  • 23. Example 1 – 1st Order System Output file: *.txtMeasure tool. What is the expected steady-state output voltage?
  • 24. Example 2: Voltage Controller 200mH120Vrms, ~ 60Hz 20Ω
  • 25. Example 2: Voltage Controller Create a new circuit.
  • 26. Example 2: Voltage Controller Insert a Sinusoidal Voltage Source.
  • 27. Example 2: Voltage Controller Add two Thyristors to the circuit.
  • 28. Example 2: Voltage Controller Insert a R-L Branch.
  • 29. Example 2: Voltage Controller Connect all the elements.
  • 30. Example 2: Voltage Controller Add an Alpha Controller to the circuit.
  • 31. Example 2: Voltage Controller
  • 32. Example 2: Voltage ControllerDouble-click on the block and click on Help to understand this block.
  • 33. Example 2: Voltage Controller Add a Voltage Sensor to the circuit to synchronize the gating signal.
  • 34. Example 2: Voltage ControllerInsert a Comparator to detect the zero crossing (from Elements > Control > Comparator or from the Element toolbar)
  • 35. Example 2: Voltage Controller Add a Ground to the circuit. Insert a DC Voltage Source. Change its name to Alpha and display it.
  • 36. Example 2: Voltage Controller Insert a Step Voltage Source. Change its name to Enable and display it.
  • 37. Example 2: Voltage Controller Using Labels to make connections: insert a Label and name it G1.
  • 38. Example 2: Voltage ControllerConnect the Label to the output of the Alpha Controller block. Insert another Label, name it G1 and connect it to the gate port of Thyristor 1.
  • 39. Example 2: Voltage Controller Create the alpha controller for the other Thyristor.Insert aVoltageSensor, aComparatorand an AlphaControllerblock.
  • 40. Example 2: Voltage Controller Use Labels for the Enable signal (E), Alpha signal (A) and Gate signal for Thyristor 2 (G2).
  • 41. Example 2: Voltage Controller Insert an input Voltage Probe (Vi), an output Voltage Probe (Vo) and an output Current Probe (Io).
  • 42. Example 2: Voltage ControllerInsert a Simulation Control block. Set the simulation time to 50 mili-seconds
  • 43. Example 2: Voltage ControllerSet all the parameters values. Set the Alpha angle to 30o.
  • 44. Example 2: Voltage Controller Run the Simulation. Plot Vi and Vo.
  • 45. Example 2: Voltage Controller Add a new Screen and plot Io.
  • 46. Example 2: Voltage Controller Other tools: FFT and AVG.
  • 47. Example 2: Voltage Controller Other tools: FFT and AVG.Run the circuit for Alpha equals to 60o and 90o.
  • 48. Example 2: Voltage ControllerAdditional measurements: load power, RMS current and power factor. (Example 5-2; Hart; pg 170) Add a Watt Metter from Elements > Other > Probes > Watt Metter Change the Time Step, Total Time and Print Step
  • 49. Example 2: Voltage ControllerAdditional measurements: load power, RMS current and power factor. Add a Current Sensor and two RMS blocks from Elements > Control > Computational Blocks > RMS Add Voltage Probes to measure the RMS values
  • 50. Example 2: Voltage ControllerAdditional measurements: load power, RMS current and power factor. P P 147 PF = = = ≅ 0.45 S Vi, rms ⋅ I i, rms 120 ⋅ 2.71
  • 51. Example 3: Semiconverter120Vrm s, 10mH 60Hz~ 100mH ~ 2Ω ~
  • 52. Example 3: SemiconverterCreate a new circuit. Insert a Three-Phase Voltage Source.
  • 53. Example 3: SemiconverterInsert all the other power elements and connect them.
  • 54. Example 3: SemiconverterInsert and connect the Alpha Controllers.
  • 55. Example 3: SemiconverterInsert the Sources for the angle Alpha and for the Enable signal.
  • 56. Example 3: Connect Semiconverterinsert the Gate signals, a Simulation Control (50 ms) and set all the parameters.Insert an inputVoltage Probe,an outputVoltage Probe,an inputCurrent Probeand an outputCurrent Probe.
  • 57. Example 3: Semiconverter to 30, 60Run the circuit for Alpha equals and 90 degrees. Check the results.
  • 58. Example 3: SemiconverterExercise: Implement the additional measurements for this circuit: THD, load power, RMS current and power factor. See Ex. 5.9; Rashid; pg 156