Psim tutorial- tiristor

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Psim tutorial- tiristor

  1. 1. PSIM: A Tutorial
  2. 2. Presentation Outline What is PSIM? Circuit Structure Getting started with PSIM Hands-on Examples
  3. 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. 4. Circuit Structure Power Circuit Switch SensorsControllers Control Circuit
  5. 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. 6. Getting Started with PSIM  Start PSIM: go to c:PSIM6_DEMO -> PSIM Newcircuit
  7. 7. Getting Started with PSIM  Create a new circuitMenuToolba rCircuitwindow Element toolbar
  8. 8. Getting Started with PSIM Example 1 – 1st Order System 1 kΩ50V 50nF 45 k Ω
  9. 9. Example 1 – 1st Order System Insert a DC Voltage Source from the Element Toolbar.
  10. 10. Example 1 – 1st Order SystemThe DC Voltage Sourcecan also be found inElements > Sources >Voltage > DC
  11. 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. 12. Example 1 – 1st Order System Add a Capacitor to the circuit.
  13. 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. 14. Example 1 – 1st Order System Insert a Ground element.
  15. 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. 16. Example 1 – 1st Order SystemSet the simulation parameters: Insert a Simulation Control block.
  17. 17. Example 1 – 1st Order SystemSet the simulation parameters: Time Step and Total Time.
  18. 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. 19. Example 1 – 1st Order System Start the simulation
  20. 20. Example 1 – 1st Order System Select the variable Vo.
  21. 21. Example 1 – 1st Order System Set the colors.
  22. 22. Example 1 – 1st Order SystemUse the Zoom tool and buttons toselect a specific area you want to see.
  23. 23. Example 1 – 1st Order System Output file: *.txtMeasure tool. What is the expected steady-state output voltage?
  24. 24. Example 2: Voltage Controller 200mH120Vrms, ~ 60Hz 20Ω
  25. 25. Example 2: Voltage Controller Create a new circuit.
  26. 26. Example 2: Voltage Controller Insert a Sinusoidal Voltage Source.
  27. 27. Example 2: Voltage Controller Add two Thyristors to the circuit.
  28. 28. Example 2: Voltage Controller Insert a R-L Branch.
  29. 29. Example 2: Voltage Controller Connect all the elements.
  30. 30. Example 2: Voltage Controller Add an Alpha Controller to the circuit.
  31. 31. Example 2: Voltage Controller
  32. 32. Example 2: Voltage ControllerDouble-click on the block and click on Help to understand this block.
  33. 33. Example 2: Voltage Controller Add a Voltage Sensor to the circuit to synchronize the gating signal.
  34. 34. Example 2: Voltage ControllerInsert a Comparator to detect the zero crossing (from Elements > Control > Comparator or from the Element toolbar)
  35. 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. 36. Example 2: Voltage Controller Insert a Step Voltage Source. Change its name to Enable and display it.
  37. 37. Example 2: Voltage Controller Using Labels to make connections: insert a Label and name it G1.
  38. 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. 39. Example 2: Voltage Controller Create the alpha controller for the other Thyristor.Insert aVoltageSensor, aComparatorand an AlphaControllerblock.
  40. 40. Example 2: Voltage Controller Use Labels for the Enable signal (E), Alpha signal (A) and Gate signal for Thyristor 2 (G2).
  41. 41. Example 2: Voltage Controller Insert an input Voltage Probe (Vi), an output Voltage Probe (Vo) and an output Current Probe (Io).
  42. 42. Example 2: Voltage ControllerInsert a Simulation Control block. Set the simulation time to 50 mili-seconds
  43. 43. Example 2: Voltage ControllerSet all the parameters values. Set the Alpha angle to 30o.
  44. 44. Example 2: Voltage Controller Run the Simulation. Plot Vi and Vo.
  45. 45. Example 2: Voltage Controller Add a new Screen and plot Io.
  46. 46. Example 2: Voltage Controller Other tools: FFT and AVG.
  47. 47. Example 2: Voltage Controller Other tools: FFT and AVG.Run the circuit for Alpha equals to 60o and 90o.
  48. 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. 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. 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. 51. Example 3: Semiconverter120Vrm s, 10mH 60Hz~ 100mH ~ 2Ω ~
  52. 52. Example 3: SemiconverterCreate a new circuit. Insert a Three-Phase Voltage Source.
  53. 53. Example 3: SemiconverterInsert all the other power elements and connect them.
  54. 54. Example 3: SemiconverterInsert and connect the Alpha Controllers.
  55. 55. Example 3: SemiconverterInsert the Sources for the angle Alpha and for the Enable signal.
  56. 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. 57. Example 3: Semiconverter to 30, 60Run the circuit for Alpha equals and 90 degrees. Check the results.
  58. 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

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