2. Table of Contents Team members Starting point Definition of problem Solutions System Overview Key Components Monitoring system Charging System Generator System Design schedule Budget Thanks Questions

3. Project Team Students Members Faculty Advisor Lindsey ChironRoger Gauthier Dr.Kraft Parker McDonnellMichael Swanson Patrick Hingston Bryce Kelley

4. Starting Point Building off Electric Snowmobile Built last year  Comprised of 20KW electric motor  Motor mounted on solid aluminum frame  96V Battery Bank (eight 12V Lead Acid Batteries)  Batteries stored under seat compartment  Pulse Width Modulation Circuit controls transistor ON/OFF  IGBT (Insulated Gate Bipolar Transistor) controls armature current  Zero to max RPM motor control using PWM  Direct drive transmission requires no clutch 20KW electric motor 96v Battery Bank PWM CircuitZero To Max RPM

5. Definition of Problem Current Issues  Lack of real time system monitoring  No user heads up display  Nonexistent charging system  No emergency backup power  Lack of safety features (GPS location, IGBT temperature monitoring, Battery State of Charge)  Lack of Headlights  Drive shaft held together with cotter pin  Weak drive shaft  Loud engine whine

6. Proposed Solutions  System To Be Implemented  Sensors measuring system vitals  Monitoring System using CompactRIO  Integrated GPS unit  Smart Battery Charger  Emergency Generator system  User heads up display  HID headlights  Noise reduction materials  Hardened steel drive shaft/tightened drive chain Charging System Compact RIO Touch Panel DC Motor GPS Unit Sensors 120V Generator Charging Circuit

7. Charging System Compact RIO Battery Bank Generator Touch Panel DC Motor PWM Circuit Sensors Diagram Legend High Power Output Signal Bidirectional Signal

8. CompactRIO Device Description  Donated by National Instruments  Small, rugged embedded control and data acquisition  Embedded real-time processor built into chassis (400MHz Freescale)  Powered by National Instruments Labview (Graphical programming language)  Hot-swappable industrial I/O modules with built in signal conditioning for direct connection to a variety of sensors and actuators  Extremely rugged, -40 to 70 °C (-40 to 158 °F) operating temperature  Up to 2,300Vrms isolation  50g Shock Rating  Dual 9 to 35 VDC supply input low power consumption (7 to 10W typical)  (7.07 X 3.47 X3.47 in.) and weighs 3.47 lb  HMI connection for interface with touch panel module

9. Touch Panel Device Description  Donated by National Instruments  5.3’’ touch panel display  Max power Consumption of 20W  18-32 VDC power input  -20 to 70 °C (-4 to 158 °F) temperature operation  320 X 240 Pixels (256 Colors)  416 MHz Intel XScale processor running Windows CE  Ethernet connection for communication with CompactRIO

10. Generator Device Description  2100 Watts of AC Power  125-cc, 4 Stroke air cooled engine (no need to mix oil/gas)  62dB at 7 meters (23 feet)  1.5 gallon fuel tank  2.5 hour runtime at full load  Pull start  22 x 20 x 11 inches  62 pounds  Economy mode reduces noise and fuel consumption

11. Beginnings of Charging System Device Description  Step down transformer 120v to 14.5v (RMS)  Full Wave rectifier Large capacitor reduces AC ripple  Voltage comparator provides charging status  ON/OFF switch  LED lights show status of batteries  Fuse protect batteries from over current  Provides constant DC voltage to batteries

12. 20KW DC Motor PWM Signal Pulse Accumulator Magnetic Pickup or Optical Encoder Pulses Battery Monitor System Output Analog Port Ethernet Connection NI Touch panel Module Temperature Reading Analog Port Instantaneous Current and Voltage NI Compact Rio IGBT Thermistor 96v Battery Bank Garmin GPS 18 GPS Position, heading, velocity serial data 2KW Generator

13. System Monitoring The CompactRIO will be used to monitor a variety of the snowmobiles vitals Using analog I/O DAQ modules Measurements  Motor current (Current)  Motor RPM (frequency)  PWM signal (Voltage vs time)  Duty Cycle of PWM signal  Distance Traveled  Battery Level (Voltage)  Global Position (Serial data)  Generator Power output (voltage)  Outside Temperature (thermocouple voltage)  IGBT temperature level (thermistor voltage)

14. Battery Monitoring To determine the state of charge per battery we will be measuring the voltage across each batteries terminal The voltage measured can be used to determine the percentage of charge present according to the figure The NI CompactRIO analog I/O port will Be used to measure this voltage, determine the percent charge and display this information in a bar chart for the user to see

15. RPM and Other measurements To measure the RPM of the DC motor a magnetic toothed gear will be mounted on the drive shaft. A Honeywell magnetic pickup sensor will generate a pulse each time the magnet passes by These pulses will be sent back to the counter module of the CompactRIO The frequency of these pulses will be determined and effectively RPM can be found using the relationship RPM = F p The other measurements to be taken will be comprised of voltages that can be easily measured with the analog DAQ module on the CompactRIO CompactRIO DC Motor Sensor Voltages

16. Transformer Battery Bank Ripple Remover FW Rectifier Fuse 120V Outlet Diagram Legend High Voltage Low Voltage High Current Relay Circuitry

17. Charging System The charging system will be used to recharge the snowmobiles batteries quickly and safely

18. Battery Bank 120V Generator Diagram Legend High Voltage High Current CompactRIO Signal Voltage Control Signal DC Motor Charging Circuit

19. Generator system The generator system will be used to Provide emergency power to the batteries in the event of discharged batteries With a few tweaks the generator Should be able to directly interface with the input of the charging system

20. Design Schedule Fall Semester

21. Design Schedule Spring Semester

22. Project Budget

23. Thank You Dr. Gordon Kraft & Dr. Barbara Kraft Lesley Yu of National Instruments Stephen Doran, Luke Varitek, Bryce Kelley

24. Questions?