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Building an Electric Vehicle: Design Considerations.

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Presentation on theme: "Building an Electric Vehicle: Design Considerations."— Presentation transcript:

1 Building an Electric Vehicle: Design Considerations

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5 Throttle and Controllers

6 Configuration: 5 k ohm sealed pot without 3-terminal microswitch Conection: 4 foot long, 2-wire unshielded, #22 AWG cable Stroke: Spring-returned lever arm drilled for variable throw distances Metal Parts: Corrosion-resistant stainless steel Dimensions: 3.75" H X 4.00" W X 2.06" D Configuration : 5 k ohm sealed pot with 3-terminal microswitch Connectons: Potentiometer: 4 ft. long, 2-wire unshielded, #22 AWG cable Microswitch: Three 0.188" X 0.018" tabs Stroke: Spring-returned lever arm drilled for variable throw distances Metal Parts: Corrosion-resistant stainless steel Dimensions: 3.75" H X 4.00" W X 2.06" D Throttle Controls

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8 Included Controller AmpsVoltage rangePeak Horse Power RPMKit price (motor and controller) Alltrax DCX- 300 300 A24V - 48V13 hp3000$1050 Alltrax DCX -400 400 A24V - 48V15 hp3000$1150 Alltrax DCX - 500 500 A24V - 48V16 hp3000$1250 Alltrax DCX- 600 600 A24V - 48V17 hp3000$1425 Sevcon PowerPak 425 A60V - 84V25 hp4500$1525 Controller

9 Controller (Programmable through Software)

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12 Electric Motor

13 D&D SepEx motor -Separately Excited- Sepex 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

14 Electric Motor Mount

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17 Batteries

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19 Battery Charger

20 Braking

21 Gauges

22 Safety & Communications

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24 Discussion Points POWER MANAGEMENT Battery Charging Regenerative Systems Solar Cells Gauges and Communications VOIP Video Sensors Display (Driver & Crew) POWER SYSTEMS Battery Types Volts & Amps & HP TRANSMISSION Belts or Chains SAFETY SYSTEMS Gear Switches Power Indicators Gel Batteries


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