Wound Rotor Motor Mill Drives - factjeugdnoord.nl
Wound Rotor Motor Mill Drives A wrim is a type of induction motor with unique construction , in the cement and mining industry for starting and driving large grinding mills in fact, until about 1985, a wound rotor induction motor was the , motors on grinding mills, slip power recovery drives have been applied in other industries, such as in municipal chat online.
Wound rotor motor - Wikipedia
A wound-rotor motor can be used in several forms of adjustable-speed drive. Certain types of variable-speed drives recover slip-frequency power from the rotor circuit and feed it back to the supply, allowing wide speed range with high energy efficiency.
Can a VFD run a wound-rotor motor?
Altivar variable frequency drives may be used to operate wound-rotor motors. Most wound-rotor motors are used where high starting torque is required so an Altivar 312, Altivar 32 or Altivar 71 drive would be most suitable for this application. The wound-rotor motors use resistor to connect the rotor windings.
TECO-Westinghouse Wound Rotor Motors
What makes the wound rotor motor a unique induction machine is its rotor. Instead of a series of rotor bars, a set of insulated rotor coils is used to accept external impedances. The rotor windings are similar to those found on a DC armature, with the coils connected together to a set of rings that make contact with carbon-composite brushes.
Advantages of SER drives for SAG mills | GoHz.com
Dec 19, 2014 · For large mills requiring variable speed, the wound rotor motor and SER drive are economical for a total rating of approximately 2MW to 16MW. Above 16MW, the gearless drive (cyclo-converter) is typically used because gearboxes and pinion gears reach their present limit in size.
Wound Rotor Motor Mill Drives - nnguniclub.co.za
Wound Rotor Motor - acelectricmotors. We are a manufacturer and supplier of wound rotors with many years of export experience in China, Any questions we will reply you asap within 2 hours, we will provide competitive prices and high quality wound rotor induction motor.
Slip Energy Recovery System Rotor Drive (SER) | CSE Uniserve
The CSE Uniserve Rotor Drive Slip Energy Recover System (SER) is designed for speed control of wound rotor induction motors. Typical applications include mills, crushers, fans and pumps. Typical applications include mills, crushers, fans and pumps.
Ball Mill Drives - Mineral Processing & Metallurgy
Several types of ball mill drives can be furnished, made up of various combinations of gearing, motors and transmission equipment. The correct combination to be selected takes into consideration power requirements, gear ratings, floor space, interference from other plant equipment and motor …
Wound Rotor Induction Motors | AC Motors | Electronics ...
A wound rotor induction motor may also act as a generator when driven above the synchronous speed. Since there are connections to both the stator and rotor, such a machine is known as a doubly-fed induction generator (DFIG).
vfd on slip ring "wound rotor" motors - Variable Speed ...
Feb 07, 2008 · Rotor resistors alter the slip of the motor and produce high slip losses. At half speed, the power dissipated in the rotor resistors is equal to the power produced to the load. For normal applications, you can apply a VFDto a slip ring motor by shorting out the rotor (no resistors) and applying the VFD to the stator as per a normal induction motor.
Wound Rotor Motor Starters | Benshaw Advanced Controls ...
Wound rotor motors are typically used in application requiring high starting torques, a limited number of operating speeds, or a stepped acceleration to achieve a soft start. Typically, existing applications utilize an electro-mechanical starter on the stator, and introduce multiple stages of resistance in the rotor via a contactor arrangement to achieve a soft ramp.
Variable-frequency drive - Wikipedia
Wound-rotor synchronous motors can be run at even higher speeds. In rolling mill drives, often 200-300% of the base speed is used. The mechanical strength of the rotor limits the maximum speed of the motor.
BALL MILL DRIVE MOTOR CHOICES - artec-machine.com
The choice of a wound rotor motor requires the use of power factor correction capacitors to meet the power factor requirements of the electrical utility. The cost of these capacitors needs to be included in the analysis of mill motor drive systems. These drives typically have an inrush of 150% - …
Wound-Rotor Motors — High Torque and Adjustable Speed | EC&M
Wound-rotor motors deliver speed control of heavy and high-torque loads.Whats special about the wound-rotor motor? This type of 3-phase induction motor has high starting torque, which makes it ideal for applications where standard NEMA design motors fall short. The wound-rotor motor is particularly effective in applications where using a squirrel-cage motor may result in a starting current thats
Induction Motor Drives - Circuit Globe
The induction motor drive has many applications like it is used in fans, blowers, mill run-out tables, cranes conveyers, traction, etc. The induction motor drive is self-starting, or we can say when the supply is given to the motor, it starts rotating without any external supply.
wound rotor motor mill drives - jocdelink.nl
Wound-rotor A wound-rotor motor can be frequency drives Variable-frequency drive - Wikipedia A variable-frequency drive is a device used in a drive system consisting of the following three main sub In rolling mill drives, Wound-rotor induction motor: