In preceding articles or blog posts we have witnessed how to choose a motor and a Variable Velocity Push (VSD) for an electrical vehicle. In this article we will explain how to pick a car for your electric powered motor. You might be wanting to:
1.Change an present automobile to electrical operation, making use of a battery, or
2.Convert an present auto to electrical operation, utilizing the Talbot Electrical grid connection, or
three.Develop a car from scratch for electric operation, using a battery, or
four.Build a automobile from scratch for electrical operation, connecting to the electric power offer grid.
Whichever it is, we will present you how to go about it. Assuming that your choice is 1, you could have an outdated vehicle with a worn out gasoline engine that you would like to convert to electric powered, or you could be seeking to obtain an aged automobile from a breaker’s garden. If elektromotor , bear in head that older technology automobiles are less difficult to operate on. Consider to locate a auto that is fairly audio apart from for the engine, which latter will be discarded. If it seems to be a bit shabby you can easily have it reupholstered and repainted soon after conversion. Then you will have a wonderful-hunting electric automobile that could final you a life time. If you want it as a nearby runabout decide on a small auto. You can use a smaller sized battery and motor. Choose on the best speed that you want. That will figure out the measurement of motor. The regular gentle car requires only 5kW to preserve a velocity of 60km/h (37.three mph) on a amount street. If you want to do 100km/h (sixty two.1mph) you will want a motor of 15kW. On my website you will discover a checklist of suited 400Hz motors ranging from five.6kW up to 150kW. My firm does not sell these. If you deliver me an electronic mail from my web site I will notify you exactly where you can get them.
If your choice is 2 you will not require a huge lithium-ion battery. Your energy will occur from the grid. In an crisis, your regular 12 volt battery will be ample. Whichever circumstance you pick, the first point is to eliminate the gasoline engine from the vehicle. The gearbox (“transmission”) may possibly be retained. On a 400Hz source these motors rotate at speeds of eleven 400r/m to 12 000r/m, relying on load. Several of the motors are offered with a reduction gear. Numerous ratios are available. Decide on one that offers a reduction of between two:1 (for a large top velocity) and four:1 (for a reduce leading velocity). Retaining the car’s original transmission will allow superb acceleration and the ability to climb steep hills. Some of the motors are water cooled. Must you use 1 of these, keep the car’s radiator. Be a part of hoses in between the radiator and the motor, with an electric drinking water pump in amongst. This will give superb cooling and allow the rated electrical power of the motor to be exceeded. It is recommended to place thermistors in get in touch with with the stator windings to warn of abnormal heat develop-up. A 3-period induction motor has an efficiency of ninety% or better. Thus only ten%, at most, of the input vitality is manifested as warmth. Assess this with a gasoline motor, which at 60km/h has an performance of all around fourteen%, indicating that 86% of the strength of combustion of the gasoline has to be removed by the radiator and exhaust technique. This kind of effective cooling will permit the motor to be operated repeatedly properly previously mentioned its rated power.
If you intend constructing a auto from scratch, contemplate producing the physique of spheroidal form, like that of the design “69zulu.” Make it in two halves in fiberglass bolstered epoxy resin and be part of them. This will give you a quite light car with a lower drag coefficient. A 5kW motor in every single wheel fairing will give more than adequate efficiency. A five.6kW motor is only six inches (150mm) in diameter and 9.five inches (241mm) prolonged and weighs only 6.8kg (15 lb). Utilizing independent motors on each wheel eradicates the need to have for a differential.
In get to be capable to manage the pace of your vehicle you will require a VSD. If you are an digital whizkid you can make your own. Normally there are many versions available commercially. However, most of the latter are for 50 or sixty hertz. If you strategy to use a battery, you will want one particular of about 280 volts in get to get 200 volts three-stage right after inversion.