Electrical

=__Electrical Group Page __=

Section 5- Electrical

Power Trackers-
 * Maximum Power Point Tracker (MPPT). Necessary because solar cells produce the most power when they are operated at a specific current. This ideal currentcan vary depending on the amount of sunlight,ambient temperature, and other factors. The purpose for MPPTsis to continually adjust the current to maintain the optimal efficiency. They boost voltage so that this energy can be used to charge the car's battery pack.

Motor
 * NGM (New Generation Motors) brand electric motor and motor controller are used by many solar teams. It lacks a transmission because it is built into the hub of the wheel.
 * Model EV-C200-092 (controller) SC-M150 brushless (motor)
 * Other possibilities:
 * D and D Motor Sepex allows for regnerative braking Supplier: Solectria
 * MARS Brushless Motor [|www.thunderstruck-ev.com]

Motor Controller
 * The function of the motor controller is to convert DC power supplied by batteries and solar array into three-phase AC electricity used by the motor.
 * Control of motor speed is accomplished by adjustment of the AC output frequency.
 * NGM motor is paired with contoller above.
 * Other possibilities:
 * Curtis, SEVCON

Batteries
 * Seems like Lithium Ion are the choice for most teams unless they have connections to other more advanced (expensive)
 * Charging seems to take 5-9 hours (sun)
 * Fully charged bank could last 75-100 miles with no sunlight
 * Our contest rules limit us to 20 kg of Lithium Ion
 * Other possibilities:
 * Lead acid, Nickle Cadmium

Solar panels
 * Peak afternoon sunlight provides approxiamately1000 Watts per square meter of of surface.
 * High quality mono crystalline silicon pv cells have efficiencies of approxiamately 20%
 * Our car is limited to 6 square meters of solar cell array.
 * 6 m x 1000 watts x 20% gives theoretical maximum of about 1300 Watts of power for the car.
 * Terrestrial vs Space grade cells
 * $10/watt limitation (I believe)
 * Should be in seperated groups (3 - 5)
 * Must laminate - Most choose - 3M EVA Film - Anti Reflective Encapsulation
 * Limited to 6 different types ( Bandgaps)
 * Suppliers: Siemens and ASE Americas

State-Of-Charge-Meter Xantrex Link 10 - Meter Xantrex Link 10 - Prescaler Cost - $300 for both
 * "E meter" produced by Cruising Equipment
 * System voltage, Amp Draw, Battery status

Voltmeter
 * For each battery

Plug in Charger (220 similar to dryer plug)
 * for testing

Magnetic Contact Speedometer
 * No drag
 * Sports equipment Stores

= Motor/ motor controller =

Good article on choosing the correct motor:

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Motor/Controller Possibilities

New Generation Motor and Controller produced by [|Nu-Gen Mobility Inc].

Contact Info: info@ngmcorp.com

phone# - 703 858-0036

Fax# - 703 858 0699

Cost for both - over $22,000

[|SCM150] motor - general usage and outputs for this motor


 * [|Details]
 * [[file:lati-solar-car/SCM150_specs.pdf|Download]]
 * 388 KB


 * [|Details]
 * [[file:lati-solar-car/SCM150_specs.pdf|Download]]
 * 388 KB

NuGen’s core technology is axial flux, permanent magnet, brushless motors and their controls. Upwards of 99.9% of integral horsepower electric motors are radial flux motors that have rotors on the interior and stator with heat producing coils on the exterior. In an axial flux motor, also sometimes referred to as a “pancake” motor, the rotor and stators are disks separated axially. While it is recognized that permanent magnet motors offer higher overall efficiency and power density than conventional motor technologies such as AC induction, NuGen’s axial flux technology presents more significant improvements in efficiency and power density when compared to radial flux permanent magnet top

CSRIO Motors - 98% efficient and light weight Brushless - used by elite teams


 * [|Details]
 * [[file:lati-solar-car/Application Notes - Surface Mount Kit Motor - Augst 2011.pdf|Download]]
 * 523 KB


 * [|Details]
 * [[file:lati-solar-car/SCM01-0000-00 - Surface Mount Kit Motor - Application Drawing.pdf|Download]]
 * 419 KB


 * [|Details]
 * [[file:lati-solar-car/SCM01-0000-00 - Surface Mount Kit Motor - Assembly Drawings.pdf|Download]]
 * 134 KB


 * [|Details]
 * [[file:lati-solar-car/Surface Mount Kit Motor Information Sheet.pdf|Download]]
 * 2 MB


 * [|Details]
 * [[file:lati-solar-car/Application Notes - Wheel Motor - Augst 2011.pdf|Download]]
 * 541 KB


 * [|Details]
 * [[file:lati-solar-car/SCM02-0000-00 - Wheel Motor - Application Drawing.pdf|Download]]
 * 370 KB


 * [|Details]
 * [[file:lati-solar-car/Solar Car Wheel Motor Information Sheet.pdf|Download]]
 * 3 MB

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Controller for CSRIO motor- []

[|Hub Motor Video]


 * [|Details]
 * [[file:lati-solar-car/Pricing information.pdf|Download]]
 * 69 KB


 * [|Details]
 * [[file:lati-solar-car/Solar_motor_ kit_ notes.pdf|Download]]
 * 1 MB


 * [|Details]
 * [[file:lati-solar-car/Solar_SurfaceMount-Backing-ATTACHMENT.pdf|Download]]
 * 32 KB


 * [|Details]
 * [[file:lati-solar-car/Solar_SurfaceMount-Profile.pdf|Download]]
 * 24 KB


 * [|Details]
 * [[file:lati-solar-car/Solar_SurfaceMt-Sensor-LOCATION.pdf|Download]]
 * 296 KB


 * [|Details]
 * [[file:lati-solar-car/SolarCarMotorPaperAsPublishedSml.pdf|Download]]
 * 2 MB


 * [|Details]
 * [[file:lati-solar-car/Supply of Motor Kit - Cover Page and Terms 200602031.pdf|Download]]
 * 45 KB


 * [|Details]
 * [[file:lati-solar-car/Thermal model.xls|Download]]
 * 38 KB

Dr Howard Lovatt
Stream Leader, Energy Conversion Devices

Phone: 61 2 9413 7412 Alt Phone: 61 4 1997 1263 Email: Howard.Lovatt@csiro.au

Advanced DC Motors, Inc. model A00-4009 (brush DC motor)

Curtis-PMC model 1209B-6402 (controller)

Cost for both - $2000


 * KTA Services **

Wistar Rhoads

20330 Rancho Villa Road

Ramona, CA 92065

877 GO KTA EV (877-465-8238)

760-787-9437 (Fax)

[|http://www.kta-ev.com]

Motor Mars ME-0708 PM aka Etek-R (brush DC motor)

Sevcon MillipaK 4 Quadrant 24-48V 325A (programmable controller)

Cost for both -$1500


 * Cloud Electric, LLC **

204 Ellison Street

Clarkesville, GA

706-839-1733

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LEMCO LEM-200 (brush DC motor)

Sevcon MillipaK 4 Quadrant 24-48V 325A (programmable controller)

Cost for both - $2500


 * Cloud Electric, LLC **

204 Ellison Street

Clarkesville, GA

706-839-1733

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