Week 9 Flow Chart and UCAP Update

The next stages in our design is to integrate motor properties (Torque and EMF constant) as well as a rough moment of inertia from Solidworks (including the passenger, drive and slave bogies, and the approx location and weight of the UCAPs) into an LT Spice simulation which will calculate things like what the four motors current draw will be, what the "load" (motors and bogie) equivalent resistance in the circuit will be (This will give us the R_equivalent in the RC calculations for the UCAPs)  as well as the power captured from regenerative braking.  


This Flow Chart helps integrate controls team with wayside power team. It also makes sure everyone is on the same page. This system is Ultra Caps only. Some model numbers are referenced in blue boxes next to the actual part. Controls will be doing the programming here, this is just a preliminary flow chart to show controls what we will need from them.  

Our On Board UCAPs will have these properties: (This will change when we calculate the current draw from the load including motor specs and Moment of inertia from bogie)(2UCAPs total)
UCAP Model # Discharging
BMOD0165 P048 BXX,CXX*

Datasheet
Mod Voltage48V
Mod Capacitance165F
Mod ABS MAX Current1900A
Mod in series2
Mod in parallel1
Terminal Resistance 0.00015Ohm
ESR Ageing Factor2(+100%)
ESR Ageing Factor0.8(-20%)
ESR_dc from datasheet0.008Ohm
RC Resistor for Charging on board UCAPS0.648Ohm
Number of Resistors in series2
Total ESR Resistance0.032Ohm
Total Resistance for RC Circuit1.33Ohm
Voltage of On Board Bank96V
UCAP Min V48V
Total Capacitance 66F
Q_max6336F*V
Total Energy Stored in Bank304KJ



For now, our Solar Power Bank will have these properties: (This will change when we calculate the current draw from the load including motor specs and Moment of inertia from bogie) (3UCAPs total) We are planning to store enough energy here to charge the bogie (30sec) and create acceleration from stop. This power will be transferred through the wayside power rail.

UCAP Model # Discharging
BMOD0165 P048 BXX,CXX*

Datasheet
Mod Voltage48V
Mod Capacitance165F
Mod ABS MAX Current1900A
Mod in series3.0
Mod in parallel 1.0
Terminal Resistance 0.00015Ohm
ESR Ageing Factor2(+100%)
ESR Ageing Factor0.8(-20%)
ESR_dc from datasheet0.006Ohm
RC Resistor for Charging on board UCAPS0.324Ohm
Number of Resistors in series3
Equivilant Resistance 0.972Ohm
Total ESR Resistance0.036Ohm
Total Resistance for RC Circuit1.008Ohm
Voltage of Solar Bank144V
UCAP Min V72V
Total Capacitance 44F
Q_max6336F*V
MAXIMUM Current each Resistor Sees140A
Total Power Delivered to ON BOARD BANK (30 seconds worth): 331KJ
Total Energy Stored @Full456KJ awrfgwrWFEw IOur

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