1. Impulse Generator Control Module Mid-Semester Presentation

2. Team Members Phillip Dillon Electrical Engineering Team Leader Francis Tran Electrical Engineering Calvin Liu Electrical Engineering John Ford Computer Engineering Mohieldeen Abdelrahman Electrical Engineering Dr. Masoud Karimi Faculty Advisor

3. Background Problem Solution Constraints Approach System Overview Subsystems Timeline Progress References [1] Outline

4. What is an Impulse Generator Control Module? What is an Impulse Generator? Apparatus which produces short high-voltage surges. Capacitors charge in parallel and discharge in series into a test object. These surges are used to test electrical power equipment. Impulse Generator Control Module: Measures/adjust charging voltage Measures/adjust the spark gap distance Background

5. The Marx high impulse generator in MSU’s High Voltage Lab (HVL) is currently controlled using analog gauges at an outdated manual control panel. Problem

6. Create a digital control module for an impulse generator that can be easily used and implemented into an existing control system similar to the one in the MSU’s High Voltage Lab. Solution

7. NameDescription Power RequirementThe power supply must operate on 120VAC. Voltage MeasurementThe peak voltage measurement must be accurate within 3% error. Spark Gap ControlThe spark gap control must operate within +/- 2mm. Humidity MeasurementThe humidity must be measured over the range of 20% to 90% relative humidity and must be within an accuracy of +/- 5% relative humidity. Temperature MeasurementThe surrounding air temperature must be measured within the range of 0 to 50° Celsius and must be within an accuracy of +/- 2° Celsius. Technical Constraints

8. The control module must be compatible with future modifications, renovations, or replacements of the impulse generator. Practical Constraints: Sustainability

9. The control module must be able to detect any faults it could cause and must be able to report this to the user, as well as signaling the failure to any other sub-systems that require such signaling. Practical Constraints: Health and Safety

10. Pic33Arduino DueArduino Uno Approach: Microcontroller [2][3][4]

11. MicrocontrollerProsConsSelection PIC33 Cost: $1.57 20 Pins Clock Speed: 7.37MHz Close Source Arduino Due Clock Speed: 84MHz 12 Analog Input Pins Open Source 512Kb Flash Memory Cost: $48.74 Arduino Uno Cost: $24.51 Open Source Clock Speed: 16MHz 32Kb Flash Memory 14 Digital I/O Ports Approach: Microcontroller

12. ] HT34-488 Step Motor Airpax LB82773-M1 Step Motor SM42HT47-1684B Step Motor Approach: Motors [5][6][7]

13. MotorsProsConsSelection HT34-488 High Torque 1.8 Degree Step Angle Cost: $363 4.25 A/phase Airpax LB82773-M1 800mA Drive Current Cost: $29.99 Low Torque 7.5 Degree Step Angle SM42HT47-1684B 1.8 Degree Step Angle Low Drive Current Cost: $9 Double Shaft Approach: Motors

14. DHT11 SHT10DHT22 Approach: Sensors [8][9][10]

15. SensorsProsConsSelection SHT10 -40° to 123° C 0.5° C Accuracy Compatible With Arduino Cost DHT11 Cost Arduino Compatible IEEE standard 4-1995 [11] 0° to 50° C 2° C Accuracy DHT22 -40° to 80° C 0.5° C Accuracy Cost Approach: Sensors

16. Control Module Sphere Gap Control Voltage Control User Input Atmospheric Conditions Computer Power System Overview

17. Spark Gap Motor Subsystem: Spark Gap Control

18. + Stepper MotorVariac [12] [13] Subsystem: Voltage Control

19. Timeline

20. Effective Teaming PhillipCalvinJohnMohieldeenFrancis Spark Gap ControlXXX Voltage ControlXXX MicrocontrollerXX Testing and DebuggingXXXXX Power SupplyXXX Atmospheric SensorsXXX

21. Progress January: Research Ordered Parts February/March: Research Ordered Parts Prototype for testing

22. [1] Marx High Impulse Generator. [Online]. Available: http://www.ece.msstate.edu/hvl/research.html [2] PIC33. [Online]. Available: http://www.elmotex.de/bauelemente- aktiv/mikroprozessoren-und-peripherie/microchip-dspic33- --controller/pic-33-fj-12-mc-202-i-sp.php [3] Arduino Due. [Online]. Available: http://www.arduino.cc/en/Main/arduinoBoardDue [4] Arduino Uno. [Online]. Available: http://www.arduino.cc/en/Main/arduinoBoardUno [5] HT34-488 Step Motor. [Online]. Available: http://www.applied-motion.com/products/stepper- motors/ht34-488 [6] Airpax Step Motor. LB82773-M1. [Online]. Available: http://wiki.t-o- f.info/Arduino/ExempleMoteur%C3%80PasBipolaireEtSN7 54410 [7] SM42HT47-1684B Step Motor. [Online]. Available: http://www.smartautomation.com.cn/ProductShow.asp?Arti cleID=497 References [8] SH10. [Online]. Available: http://learn.linksprite.com/arduino/shields/sht-10-digital- temperature-and-humidity-sensor/ [9] DHT11. [Online]. Available: http://www.adafruit.com/product/386 [10] DHT22. [Online]. Available: http://www.adafruit.com/product/385 [11] IEEE Standard 4. [Online]. Available: http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5 73333&filter%3DAND%28p_Publication_Number%3A4330 %29 [12] Large Stepper Motor. [Online]. Available: http://www.applied-motion.com/products/stepper- motors/ht34-488 [13] Variac. [Online]. Available: http://www.circuitspecialists.com/variacs

23. Impulse Generator Control Module Mid-Semester Presentation