Transcript Building an Electric Vehicle

Building an Electric Vehicle:
Design Considerations
Throttle and Controllers
Throttle Controls
Configuration:
5 k ohm sealed pot without 3-terminal
microswitch
Configuration
:
5 k ohm sealed pot with 3-terminal microswitch
Conection:
4 foot long, 2-wire unshielded, #22
AWG cable
Connectons:
Stroke:
Spring-returned lever arm drilled for
variable throw distances
Potentiometer: 4 ft. long, 2-wire unshielded,
#22 AWG cable
Microswitch: Three 0.188" X 0.018" tabs
Stroke:
Metal Parts:
Corrosion-resistant stainless steel
Spring-returned lever arm drilled for variable
throw distances
Dimensions:
3.75" H X 4.00" W X 2.06" D
Metal Parts:
Corrosion-resistant stainless steel
Dimensions:
3.75" H X 4.00" W X 2.06" D
Controller
Included
Controller
Amps
Voltage range
Peak Horse
Power
RPM
Kit price (motor and controller)
Alltrax DCX- 300 A
300
24V - 48V
13 hp
3000
$1050
Alltrax DCX 400 A
-400
24V - 48V
15 hp
3000
$1150
Alltrax DCX - 500 A
500
24V - 48V
16 hp
3000
$1250
Alltrax DCX- 600 A
600
24V - 48V
17 hp
3000
$1425
Sevcon
PowerPak
60V - 84V
25 hp
4500
$1525
425 A
Controller (Programmable through Software)
Electric Motor
D&D SepEx motor -Separately ExcitedSepex motors are almost identical to traditional Series motors except for the way their field is wired and
controlled. Unlike the Series motor who's armature and field windings are wired together in series, the SepEx motors
field and armature windings are excited separately by special SepEx controllers that have wire leads to both the
armature and the field. Separate control of the armature and field creates distinct advantages over a standard series
wound motor, notably adjustable regenerative braking, higher rpm, longer power band, higher efficiency, and easy
reversing.
A greater rpm range and higher top speed . Field weakening towards the SepEx motors top end allows for higher
motor rpm which allows for a higher top speed on your vehicle.
Higher motor efficiently. The SepEx motor is more efficient than a series motor due to its more efficient use of the
field.
Easy reversing. With a push of a button or flip of a switch The SepEx controller can easily change the direction of the
motor by reversing the field.. making cumbersome, out-dated reversing contactors a thing of the past
Regenerative motor Braking This is one of my favorite features of the SepEx motor. The Sepex controllers can create
very efficient and smooth regenerative braking on the motor by reversing the direction of the field and varying the
reversed field's current. This essentially turns the motor into a generator while the vehicle is braking or coasting, and
puts that generated power back into the batteries. The sensation feels like compression braking on an Internal
Combustion Engine vehicle except smoother. Regenerative braking definitely makes an Electric motorcycle feel more
like a motorcycle. Other benefits of regen braking, besides recharging the battery pack
and increasing range (if that wasn't enough), is that it makes steep hill descents easier to manage, as well as saving on
brake pads and parts.
These motors are only sold as motor and controller kits, with matching tuned Sepex controllers from, either Alltrax
Inc (USA) or Sevcon (England).
D&D Sepex motor (USA)
Dia. 6.7"........Length 11"........Weight 56Lbs.........Shaft dia. 7/8" W/ 3/16 Keyway
Electric Motor Mount
Batteries
Battery Charger
Braking
Gauges
Safety & Communications
Discussion Points
POWER MANAGEMENT
POWER SYSTEMS
SAFETY SYSTEMS
Battery Charging
Battery Types
Gear
Regenerative Systems
Volts & Amps & HP
Switches
Solar Cells
Power Indicators
TRANSMISSION
Gauges and Communications
VOIP
Video
Sensors
Display (Driver & Crew)
Belts or Chains
Gel Batteries