Solar Power Cube v17.10

The solar power cube is driven by a solar panel to pump hydraulic fluid with the initial purpose of powering an autonomous tractor for agricultural use.

Specifications

Solar Panel

 
 Voltage: 36.1 VDC
 Amps: 7.76 A
 Watts: 280
 Cells: 72
 Dimensions: 77.4in (1,966mm) x 39.4in (1,000mm) x 2in (50mm)
 Weight: 57.3lb (26kg) 

DC Motor and Controller

 
 450W 36 V DC electric motor MY1020z gear reduction
 Nominal Rated Input Voltage:  36 V
 Base RPM:     450
 Full Load Amps:       16
 Current Type:         DC
 Tools and Thick Wire  Gear Ratio:     6.67:1
 Spraying Water        Reversible/Non-Reversible:      Reversible
 EBAY MY1020z $67.05

 
 Controller: PWM Motor Speed Controls DC 36V DC Gear Motor Speed Controller
 Input voltage: DC9-60V
 Output voltage: Linear load
 Output current: 0-20A
 Continuous power: 12600W
 Speed regulating type: adjust flow
 Speed mode: potentiometer (linear)
 Speed range: 0-100%
 Control frequency: 25KHZ
 Forward reversal: support
 Suitable for motor: DC brush
 Potentiometer mounting hole: 7mm
 Product size: approx. 92*50*36mm/3.62*1.96*1.41
 Net weight: approx. 145g
 Center distance: approx. 104mm
 EBAY $10.99

Hydraulic Power Unit

 
 Power 5 HP 3600 RPM
 Flow 2 GPM max.
 Pressure 2500 PSI max.
 Reservoir 1.1 gallons
 Shaft 1/2" dia. x 7/8" w/keyway
 Rotation CW
 Ports 3/8" NPT pressure
 Return 3/8" & 3/4" NPT
 Orientation Vertical
 Size 10" x 10" x 10"
 Shpg. 13 lbs.
 Surplus Center Hydraulic Power Unit $109.95

Hydraulic Motor

 
 31.88 cubic inch / revolution
 SAE 10 ports
 SAE 4 case drain

Calculations

Power

 Max Input: 280 W / (746 W/HP) = 0.375 HP

RPM input/output

 Max motor RPM: 2500
 Max Hydraulic Pump RPM: 3600
 Max Hydraulic Motor RPM: 240
 
 Estimated Max Wheel RPM: 1
 
 

Power Cube Working Document

 ["https://docs.google.com/spreadsheets/d/1KNVP2O3KogC6jyxMuRALWTxrYjyCJ4ChjeZsJVdqHsg/edit#gid=1"]