Video - How to Convert DC to AC Motor

Transcript:  

Trying to find the perfect electric motor for an industrial application can be tough. You want something that an expert would recommend, but you also want to weigh the advantages and disadvantages of DC and AC motors. 

The use of DC motors was once very popular in the industry world. This was because they had the ability to run at a speed that was set by a variable controller and they could reach full torque from the base speed.

DC motors have traditionally been used in high  torque processing applications such as paper machines and winders, rubber & plastic extruders,  cranes and hoists, dynamometers, metal processing, and traction to name a few. 

DC motors are  not cheap, though. They cost more upfront and require a considerable amount of maintenance. 

Historically, DC motors were your only option.  

With introduction of AC motors, they are becoming a preferred choice due to high performance, ease of  maintenance and lower total cost of ownership. 

There are several key distinctions between AC and DC motors. The most apparent one is the type of current each motor uses to generate energy - alternating current for AC motors and direct current for DC motors. 

AC motors usually have a higher power output and are more efficient, while DC motors boast speed control and a wider constant torque range. Additionally, AC motors come in either single- or three-phase configurations, while all DC motors are single-phase in the smaller kilowatt ranges up to 2.2kw.

What if you could upgrade your DC motor to an AC motor, reduce your maintenance costs and improve your overall equipment performance? 

Retrofitting a DC Motor is considered to be difficult. Designing a new product to perform efficiently and effectively while adhering  to space constraints can also be challenging. 

To address this challenge there is a new  Generation 3 Baldor-Reliance® RPM AC motor. 
 
RPM AC is a high-performance variable speed  AC motor designed specifically to replace  DC motors, AND it’s power dense so it fits in  spaces standard AC Motors just cannot. 

Like all DC motors, RPM AC will run with a  drive, provide constant torque to zero speed,  can handle wide constant HP speed ranges, has  dynamic response and high-speed capabilities. 

RPM AC is a product offering that is truly unique and differentiated in the marketplace for its power density, high  performance, and problem solving abilities. 

Certain features that improve  variable speed performance are now  included as standard such as shaft  grounding brushes, insulated bearings,  and QR codes on the nameplate that provide  drive configuration data making start-up easier. 

RPM AC motors are offered in both induction and  permanent magnet rotor designs. 

The permanent  magnet rotor can further reduce the size of your  machine to fit the tightest spaces or can provide  ultra-premium efficient IE5 technology that will  save you significant costs in your energy bills. 

The Ability Smart Sensor is easily mounted  to these motors to wirelessly and economically monitor the health and performance of not  only the motor but the entire drive train. 

Ready to make the switch? 

With RPM AC, we make  the selection process easy through a web-based  configurator that is extremely user-friendly.  Pertinent information such as sizing, dimensional  drawings, nameplate information, and performance  data is available with just a few clicks. 

Challenge us with your toughest processing applications that is still using a DC motor  or where a standard AC motor simply won’t do,  and we’ll show you how it can be converted to an RPM AC motor.  

Experience the performance gains with  lower maintenance costs, lower energy  bills, and lower total cost of ownership.

Reach out to John Brooks engineering experts in Auckland, Wellington or Christchurch office to get local experts involved in your transition from DC to AC motor. Call toda