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Battery Current Limiter: This protects the battery from excessive discharge.In addition to controlling the vehicles speed, there are a few other functions that speed controllers can offer, regardless of the motor you are using. With the controller you are able to control your acceleration and deceleration, as well as the speed at which your vehicle moves. The controller meters out current and voltage on your battery based on user input, whether that be a gas pedal, a throttle, or even pedals on a bicycle.
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Instead of using your useless AC motor, or your full power DC motor, consider installing a speed controller. The function of the controller in these situations, is to generate the reversing AC signals. This must stay consistent, and has to be timed precisely with the motors rotation. In these specific types of motors, electrical signals fire back and forth which reverse in direction at different times. If your golf cart is running an AC or Brushless DC motor, you won’t be going anywhere without a speed controller. Every time you hit the gas you would only get full battery power. This would be awesome on the race track, but dangerous in a neighborhood.
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Not only that, but it can put extreme stress on your drive components. Any time you apply throttle, the full battery current and voltage is sent to the motor.ĭoing this would cause violent take-offs, bad enough your neck would snapback. Let’s say you try to operate that old DC motor without a controller. The main objective for the speed controller is, as the name implies, to control the vehicle speed.
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Let’s jump right in! The Importance of the Speed Controller In this guide, we breakdown the speed controller so you have a complete understanding of their functions, and hopefully come out with the knowledge to make an educated decision on the type of controller you need for your custom electric golf cart. We wanted to provide you with this Golf Cart Speed Controllers: A Beginners Guide, in order to explain why the speed controller is the heart of your cart.Įven though the speed controller is probably one of the most important parts on your golf cart, not many people understand how they work or what they do. Here at we get a ton of questions regarding electrical and powertrain components for golf carts.