Archive for the ‘Energy Efficiency – motors’ Category

Brushless synchronous motor field exciters

May 12th, 2016 | 3 Comments | Posted in Energy Efficiency - motors
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If either your industrial operations already use synchronous motors or if you are designing a new industrial process that could greatly benefit from the perks of a synchronous motor, probably you have given some thought about the guts of this type of motor.

Now let one of our fellow members of the community D.Ros tell you more about it. Enjoy!

Synchronous motor

Synchronous motor


The renaissance of synchronous motor control strategies

May 5th, 2016 | 2 Comments | Posted in Energy Efficiency - motors
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Hi dears! Today D.Ros gives us the next article of his article series about motors. As usual, it is very interesting ; just judge by yourself:

Since electrical motors have been around, the cornerstone of heavy duty industrial operations (as crushers, grinders, mills, hoists, blowers, chippers, mixers, compressors, centrifugal pumps, exhausters, etc.) have been driven with synchronous motors for their high power and most efficient way to convert alternating current into mechanical energy; as for, different to asynchronous (induction) motors, their main source of magnetic field is derived from direct current injection rather than through the air-gap.

Ball and SAG mills powered by synchronous motors

Figure 1: Ball & SAG mills powered by synchronous motors in an ore crushing operation


Synchronous motor: field regulation techniques

April 26th, 2016 | Make a comment | Posted in Energy Efficiency - motors
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Last time, D. Ros published a very interesting article about motors and drives. Today he’s at it again with synchronous motors and guess what? He proposed to publish a series of articles about motors! We thank him dearly.

If you want to contribute to the blog too, simply send us a mail

Synchronous machines are highly regarded in the industry for their unique applications of high mechanical power demand, power system control, and plant power factor correction.

However, the uniqueness of these applications has lead into different regulation techniques oriented to meet their specific requirements.

Ball Mill driven by Synchronous Motor

Figure 1: Ball Mill driven by Synchronous Motor


Motors and Drives: AC or DC?

March 24th, 2016 | 1 Comment | Posted in Energy Efficiency - motors
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ac or dc driveToday we’re so glad to present you a new member of our community: D. Ros who surprised us with a very interesting article about motors and drives. His pont of view is what seduced us the most and we hope he will send us more articles in the future!

If you too want to publish on the Electrical Engineering Community blog, just send a mail. We’ll be glad to publish your works, career stories, testimonies, debates and other types of articles about the topic you want.

5 most common starter device types (LV/MV motor starters)

April 16th, 2015 | Make a comment | Posted in Energy Efficiency - motors
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Hi it’s Steven Mill. I think I’ve never written on this topic before, so let me tell you about motor starters…

starter device

A starter, more or less acts as a supervisor of the motor. It controls the power supply, defies switching of overloads, and also takes on the duty of disconnecting the motor from the mains, when deemed necessary.

As we can read about the topic:

“A starter can be defined as a combination electric motor controller, which can start or stop the motor with the help of external switches, protect the motors from getting overloaded, and disconnect them from the mains, in case of a serious power or load fluctuation, by taking help from the integral disconnecting devices.”


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