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Team Hybrid

Team Hybrid. Daniel Farley John Hoyt Sean Frost. Hoyt. Battery Bank. ICE. ICE. Generator. Electric Motor. Electric Motor. ICE. Generator. Axle Assembly. Axle Assembly. Axle Assembly. Power Split Device. Background Information.

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Team Hybrid

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  1. Team Hybrid Daniel Farley John Hoyt Sean Frost Hoyt

  2. Battery Bank ICE ICE Generator Electric Motor Electric Motor ICE Generator Axle Assembly Axle Assembly Axle Assembly Power Split Device Background Information • Conventional drive train- torque is applied from an internal combustion engine • Hybrid vehicle drive train- An electric motor and/or an internal combustion engine can apply torque to the drive wheels Conventional Hybrid- Parallel Hybrid- Series Hoyt

  3. Problem Statement: Vermont Technical College would like to compete in the Dartmouth Thayer School of Engineering Formula One Hybrid Racing Competition, but we do not currently have a vehicle that meets the specifications.   Farley

  4. Solution Statement: To develop and demonstrate a hybrid propulsion system which meets the following requirements Comprises both an internal combustion engine (ICE) and an electrical storage unit with electric drive The system shall meet all electrical specifications and requirements for the 2007 Dartmouth Thayer School of Engineering Formula One Racing Competition. The drive system may deploy the ICE and electric motor(s) in any configuration including series and parallel. Final design will allow the drive train system to be adapted to a chassis developed in a separate effort. Farley

  5. Battery Bank Hybrid Propulsion System Overview • The rotational input from both the electric motor and ICE will drive hydraulic pumps • to pressurize the accumulator. The hydraulic pressure will act on hydraulic motors • positioned at the drive wheels to power the vehicle. • Regenerative braking will allow the hydraulic motors to pressurize fluid back into the • accumulator for future use. ICE Power Split Device 4 port, 2 way valve V+ Hydraulic Pumps Accumulator Hydraulic Motors Generator Accumulator V+ Axle Assembly Electric Motor Check valves LowPressure Feedback Frost

  6. Electrical Motor/Generator & Controllers Subsystem (Control Sub-System) Manzanita Micro PFC-20 charge controller Belt connection To the ICE Electrical charge accumulator Generator V+ Frost Raptor 1200 Motor Controller Hydraulic Pump +120 VDC Electric Motor FB1-4001A Frost

  7. Internal Combustion and Clutch/Pump Subsystem (Hydraulic Drive Sub-System) Electric Clutch ICE Hydraulic Pump Belt connection To the ICE V+ Electric Clutch Generator FB1-4001A #1 Clutch Control Signal Hydraulic Pump Battery Bank FB1-4001A #2 Hoyt

  8. Hydraulic Pump 4 Port, 2 Way Electronically Controlled Valve Accumulator 2 Hydraulic Subsystem Overview (Hydraulic Driven Sub-System) 4 Port, 2 Way Electronically Controlled Valve Check Valve ICE Input Accumulator 1 Reservoir Electric Motor Input Hydraulic Motor Electronically Controlled Flow Valve Farley

  9. Hydraulic Pump 4 Port, 2 Way Electronically Controlled Valve Accumulator 2 Hydraulic Subsystem Overview (Regenerative Braking Sub-System) 4 Port, 2 Way Electronically Controlled Valve Check Valve ICE Input Accumulator 1 Reservoir Electric Motor Input Hydraulic Motor Electronically Controlled Flow Valve Farley

  10. Modes of Operation Full Acceleration µ-Controller Tire ICE Pressure (energy) OFF Standby Elec. motor OUTPUTS -Throttle actuated sol. -Hydraulic flow valves -Regen. Braking Assembly -Electric Motor speed Accumulator State Machine Efficiency Tire ICE Pressure (energy) Elec. motor • INPUTS • Shutoff switch • Battery Voltage • Motor Speeds • Fuel Supply • Mode selector • Brake switch • TPS • Regen. Braking switch Accumulator Regular Drive Tire ICE Pressure (energy) Elec. motor Accumulator Frost

  11. Control System Acceleration 0101001101000 Output Description S0- Efficiency Default S1- ICE Control S2- Electric Motor Feedback S3- Drive Valve S4- ICE Feedback S5- Generator Clutch S6- Electric Motor Control S7- ICE-Hydraulic Pump Clutch S8- Generator-Battery Relay S9- N.O. Electric Relay S10- ICE Shutoff S11- Regenerative Valve S12- Regenerative Motor Clutch Regen. Drive 1000100001010 Standby 000000000000 HC08 Sensor Inputs Efficiency 1011111110010 Regen. Braking 1001100001011 Regular Drive 0111111111100 Farley

  12. Control System 100 S5 S0 * S1 * ∑ Microcontroller Outputs * Throttle Request S4 S0- Efficiency Default S1- ICE Control S2- Electric Motor Feedback S3- Drive Valve S4- ICE Feedback S5- Generator Clutch S6- Electric Motor Control S6 * ∑ S2 * Frost

  13. Performance Curves for Mathematical Model Electric Motor/Generator curves Internal Combustion Curves Frost

  14. System Simulation(Test for functionality and rationality) The system was mathematically modeled Using VisSim simulation software Frost

  15. Team Hybrid Budget to date Mar. 19th Frost

  16. Proof of Concept Due to the high cost of hydraulic components and limited schedule we have decided to present two prototype demonstrations that represent the whole system • Control of the ICE, electric motor, electronic clutches and power coupling • Pneumatic model actuated by microcontroller which demonstrates drive mode and regenerative braking Hoyt

  17. Proof of Concept - Systems Hydraulic (pneumatic) Drive Concept Power Coupling Manifold Stepper Motor Hydrostatic drive Generator Pneumatic Motor ICE HC08 Clutch Assembly Differential Battery Pack Piston Electric motor Gas Brake Farley

  18. Personnel Assignments Member Subsystem Sean Frost Electric motor, motor controller, charge controller, charge accumulators Dan Farley Hydraulic component selection and implementation: Pumps, motors, valves, accumulators John Hoyt Internal Combustion Engine; Implementation of sensors; Design of clutches for ICE and electric motor Hoyt

  19. Major Milestones Completed -Mathematical Modeling of Electric Motor and ICE subsystems -System overview diagram -All subsystems designed and defined; Hydraulic, Electrical, Regenerative Braking, ICE & clutch assembly -Located differentials for demonstration between the ICE and Electric motor -Chose electrical charge accumulators -Defined states for complete system control diagram In Progress -Control software programming for each subsystem -Physical model of the hydraulic subsystem using pneumatics -Physical model of the power coupling Hoyt

  20. Summary • In order to compete in the Thayer School of Engineering Formula One Hybrid Competition, a hybrid drive-train is essential. • Team Hybrid has designed a hybrid propulsion system that meets the required specifications. • The drive train will be tested in two separate subsystems to demonstrate regenerative braking, switching between drive modes, power coupling and control of the ICE and electric motor. Farley

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