Transcript Flywheel - uidaho.edu

HydroFly
Flywheel
Gavin Abo
Nate Stout
Nathan Thomas
Voltage Sags
• Drop in RMS voltage
– Typically last from 1/2 cycle to a minute
– Caused by actions on the system that have large current draws
• Motors starting
• Transformers energizing
• Pulsed load switching
• Electrical faults
Why Sags Are Bad
• Voltage sags have adverse affects on sensitive loads
– Sags can cause loads to shutdown
• Loss of use
• Loss of Data
• Loss of production time
Main Objective
• Implement the design by Satish Samineni
– Interface a flywheel to the AMPS with the
ability to correct for voltage sags occurring on
the AMPS.
• We will focus on
–
–
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–
Induction motor controller
Programming of the DC link
Synchronizing to AMPS
Protection circuitry
• We will not do:
– Design of DC link
– Design of Induction motor controller
Block Diagram
Switching
PWM
• A triangle wave reference is
applied to a signal
– Compared
– Triangle high: logic 0
– Signal high: logic 1
– Applied to all 3 phases
Series Transformer Diagram
A
B
C
Flywheel energy
storage system
Synchronization & Protection
• Use a phase lock loop to monitor and regulate phase
• Add any additional protection needed
Budget
Flywheel Budget
Item
Price
Induction Motor Controller
$350
DC link
$4,000
3-phase transformer (500VA)
$125
Design Poster/Report Binding*
$15
Project Display Costs*
$35
Miscellaneous
$300
Total
$4,825
Time Schedule
Initial Design for Prototypes
Project Briefings (w eekly - Semester 1)
Ordering Voltage Inverters and Buck Converter
Design Review
Interface Components to Fuel Cell
Implement simulation for Flyw heel System
Demonstrate Working Prototype
Project Report and Notebook Due (Semester 1)
Summer Break
Project Briefings (w eekly - Semester 2)
Interface Fuel Cell Components to AMPS
Interface Components to Flyw heel
Revise Voltage Control System
Interface Flyw heel to AMPS
Finalize Protection Circuitry
Complete/Debug Interfacing to AMPS
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Final Product Demonstration/Release/Final Report
Questions?
www.ece.uidaho.edu/hydrofly/website