|
| |
Industrial applications use dc motors because the speed-torque relationship can be varied to almost any useful form -- for both dc motor and regeneration applications in either direction of rotation. Continuous operation of dc motors is commonly available over a speed range of 8:1. Infinite range (smooth control down to zero speed) for short durations or reduced load is also common.
|
"Electric cars are driven by large electric motors usually rated between 3.5 and 28 horsepower. For those accustomed to gas engines, this may not seem like much power, but the rating systems used for gas engines and electric motors are so different that the numbering system is almost meaningless. Gas engines are rated at their peak hp, electric motors are rated at their continuous hp. The peak hp of an electric motor is usually 8 to 10 times its continuous rating."
Motor Information |
"It should be noted, that comparing electric motors with gasoline engines is like comparing apples and oranges. Gasoline engines are rated at their peak power, and electric motors are rated at their continuous power. It is for this reason that a 30 hp electric motor will generally perform like a 50 hp gasoline engine in a same weight vehicle. Of course the addition of a large number of batteries will diminish the vehicle's ability to accelerate or climb hills."
More motor Information - Provided by "Electric Vehicle Association of San Diego" |
|
|
|
_____________________________________________________________________________
MOTORS TO USE IN ELECTRIC VEHICLES:
"The brushed series DC motor is the best overall motor for affordable road-going conversions available today. AC motors operate at high rpm that have to be stepped down, and have expensive and complex speed control systems. Brushless DC motors (actually another kind of AC motor) also require expensive controllers. Permanent magnet motors are very efficient, but only in a very narrow rpm band, and quickly lose their efficiency in the varying speeds of normal driving. Shunt and compound motors are more expensive to build and have poorer acceleration than series motors. For these reasons, the brushed series DC motor is the motor of choice."
ElectroAutomotive Web Site - More information on AC vs DC Motors, & See our FAQ's Section - Question 17 |
______________________________________________________________________________
AC VS DC MOTOR COMPARISON:
"Electric motors convert electrical energy into mechanical energy. Two types of electric motors are used in electric vehicles to provide power to the wheels: the direct current (DC) motor and the alternating current (AC) motor."
AC Motor Comparison to DC Motor - U. S. Department of Energy EV Power Systems Web Site |
_____________________________________________________________________________
DC MOTOR HORSEPOWER RATINGS:
The Horsepower ratings for Electric Motors are a little deceiving, Electric Motors have about 3 times the torque than gas motors and the peak horsepower is basically limited only to the controller used. An Advanced DC motor rated at 17.5 hp will power a Geo-metro to over 70 mph. For more information visit our FAQ's web page.
More information on "Horsepower" in Electric Vehicles - Questions 21 & 22 |
|
|
|
Most Large EV's use a series wound DC motor.There aren't any magnets, but instead a field winding of wire that becomes an electro magnet when current flows through it. A series motor means that the same current that flows through the rest of the motor (armature) also flows through the field windings. Heavy duty wire and connections are used for every aspect of the motor to withstand the high current. There are also some benefits concerning torque. The motor is wired so that the negative output side of the controller goes into the field winding, the field winding output is shorted to the armature, and the other armature connection is hooked to the positive side of the battery pack.
Series Wound 8" & 9" Motor Specifications - Electro Automotive Web Site |
|
|
| |
Most Popular for Medium Sized Electric Vehicles
Advanced D.C. Motors, Inc. designs, manufactures and markets special purpose low voltage D.C. Traction and Pump Motors for the Electric Lift Truck segment of the Material Handling Market, the Off Road and On Road Electric Vehicle Market and other related markets.
The corporation formed in July 1989 leasing a 20,000 square foot building. Our first motor was produced in October of the same year. Eight months later we expanded to 39,000 square feet. In April 1993 we purchased our present location at 6268 East Molloy Road, E. Syracuse, NY which provided us with 55,000 sq ft of manufacturing floor space. Since that time we have leased two additional locations one in June 1995 the second in March 1998. We became part of the growing family of Jordan Industries in May 1998.
Even throughout our expansions the On-Time Delivery Performance has been at 99.8% with a customer return of .12%.
The corporation does not recognize any geographical boundaries and currently enjoys marketing efforts in the United States, Canada, Great Britain, Scandinavia, Continental Europe, India and Australia.
The corporation regards as its major strength the ability to provide a full range of engineering design and application services to its' customers and the ability to produce high quality special purpose products for a range of applications.
Top Of Page
ADC Web Site |
|
|
| |
Improved version of the ADC Motor for Larger Electric Vehicles
Our motors are produced by Warfield Electric Co. in Frankfort, Illinois. Warfield is the nation's largest rebuilder of series wound DC motors. Since they already knew what the failure points were from their experience repairing "all the other motors," it was a simple matter for them to help us design motors that were intended for the unusual stresses encountered in electric vehicles.
Top Of Page
WarP Motor Information Provided by Netgain Technologies |
|
|
|
Reliance Electric Motor Technical Reference - a valuable resource for technical and related information on our motors. The MTR is intended to replace the paper version of our Action Guide. It is our intent that the MTR will become your primary focal point for technical motor reference needs. The current release includes data for small and medium AC motors and some DC motor information. Future upgrades will expand on AC and DC motors and include information on submersible motors.
Reliance Electric Motor Web Site |
|
|
|
|
1 to 10 Hp DC Motors for use in Electrathons, Karts & other small Electric Vehicles
|
|
|
| |
Scott motors are about the best and most efficient motors you can find at reasonable prices for light electric motorcycles, Electrathon vehicles, scooters, and general industrial applications. Reliability is higher than separately excited field motors due to fewer electronic parts and no possibility of shorting out the field. They operate more efficiently at lower speed control than separately excited field motors as well, and produce more horsepower in a smaller, lighter motor. Horsepower ratings on these motors is the nominal rating at the motors most efficient operation. Each motor can deliver considerably higher HP for intermittent periods during actual use.
Top Of Page |
|
|
| |
| Drive... |
|
|
|
|
we provide the motive force in many sectors: scooters, go-karts, golf carts or boats; electric cars, wind generators or cleaning machines, lawnmowers or pallet trucks; as well as all industrial applications like pumps and servo applications in fact, wherever you need compact power. Let's talk. |
|
|
|
|
|
Efficiency... |
|
|
|
|
|
disk motors from Perm Motor work with an efficiency of up to 95%. The combination of the most modern materials and innovative design results in light and small motors with a high torque rating. They are, in short, the best drive solution for all of the above applications |
(Provided by Perm Motor Web Site)
|
|
|
