How do I connect a three-phase induction motor to a star-delta mainframe? The answer is very simple, if you don’t know-how, and if you have no idea what I am talking about. Three-phase motors have two independent coils, rather than just one as in a four-phase motor.
When a three-phase induction motor is connected to a star-delta mainframe, the individual coils are energized by a separate electrical source, so that when they are joined together and spun at the same frequency as the mainframe star, the overall output power is increased. The resulting increase in output power can be quite significant. And that is exactly why it is so important to use only high-quality three-phase induction motors for any type of electrical work involving electrically energized conductors.
If you already own a delta motor or are planning on purchasing one, you should not have any difficulty finding one that will work with your three-phase mainframe. There are quite a few options available on the market today, but not all of them are made equal. You want to make sure you purchase one that meets or exceeds the required voltage rating for your application.
There are two primary considerations when connecting a three-phase induction motor to a star-delta mainframe. The first of these is the connection between the three-phase induction motor and the air control system. The second is to ensure that the motor can be installed where necessary to support the load requirements of the airplane. There are different ways to support a three phase induction motor depending on the application.
One of the most common ways to support a three phase induction motor to a star delta is to use an aluminum plate that supports the motor on both sides. You can install this inboard or outboard of your aircraft’s wing. Installation is usually performed by professionals who are skilled at both. You must be careful to install the plate correctly, since if it is not mounted properly it could interfere with the electrical loads on the wings.
Another way to support a three phase induction motor to a star delta is to make sure that it is attached to a steel or aluminum strut assembly. This works great if you are going from a tri wing design to a two-wing design. It can also work for a delta wing design, although it may take a bit more labor to install because the strut assembly has to be cut to the correct length and placed exactly in-line with the main landing gear. If you are planning on a one-wing configuration, then the strut assembly will have to be positioned a bit further forward. Either way, it will be supported well by the three-phase induction motor to a star-delta configuration.
