The total installation cost was under $1000. The 25 hp motor was purchased used along with a new rotary converter from Roe Electric in Toledo, OH. He had set up a rotary phase converter and was sawing faster, quieter and cheaper than with the gas engine. I recently bought a used Wood Mizer LT40HDG35 bandmill that the previous owner converted from the factory Wisconsin 35 hp gas engine to a 25 hp 3 phase. You get about 10-12 kWh per gallon of oil. Of course, running a generator may make sense depending on kWh cost. The motors will run cooler and last longer. You get much "cleaner" power and eliminate the "wild leg" problem. This is not directly related to sawmills necessarily, but take a good look at using a variable frequency drive instead of a rotary phase converter. with 3 phase motors of this size range with a rotary phase converter, especially anyone that has switched from gas or diesel to 3 phase electric (converted or not). We would like to hear from anyone that has experience running a sawmill and edger, etc. So I know what they are and where to get them. I’ve done considerable study on rotary phase converters and have seen two homemade converters in use (but not on sawmills). If we decide to do this, we would also upgrade or convert our edger to a 15 hp 3 phase unit.Īs we only have single phase available and it would be cost prohibitive to get 3 phase service to our farm, we’d need a rotary phase converter. Rotary converters are a cost-effective option and are usually selected by individuals who have 1 or 2 machines, often in a home shop or commercial workshop.We are considering upgrading to a 25 hp Wood Mizer 3 phase electric mill. You can calculate the single phase breaker size you need using this calculator. If you have limited power available, you can eliminate this additional power overhead by using a digital converter. The larger the rotary phase converter is the more power it will consume to produce the 3 phase electricity from single phase. This generator needs to continuously spin even when there is no load on the converter. The rotary phase standby power consumption is directly related to the size of the electrical generator. ![]() This generator is basically a specially designed electric motor with no drive shaft. When the rotary converter is on, then the generator is spinning. Rotary converters have both a panel and an electrical generator (seen in the image below). ![]() If you install a breaker panel, then you can power multiple machines, like in the connection diagram below. They are a 3 phase converter and can power a machine with a single motor or multiple motors. Rotary phase converters, also known as Roto Phase Converters, are a power supply. Both of these types of static phase converters are described in more detail below. The 3rd phase needs to occur at a different time than the utility waves.īy having a constant DC power supply, the phase converter can convert the DC back to AC in the proportion it needs at the time it needs it.Įxamples of solid-state phase converters are variable frequency drives and digital phase converters. ![]() This also allows the phase converter to offset the 3rd sine wave from the utility sine waves (see the image below). The 3rd electrical sine wave is what creates the 3 phase power (see the image below rotary phase converters section). There is an interesting reason why this is done.īy creating a uniform and constant DC power supply, the solid-state phase converter can then take from this in a reliable way to produce the 3rd electrical AC sine wave. This conversion is accomplished through electronic rectifiers. A solid-state phase converter is a device that produces 3 phase power by converting AC (sine wave) power into DC power, and then back to AC power.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |