wound rotor motor mill drives manufacturer Grasping strong production capability, advanced research strength and excellent service, Shanghai wound rotor motor mill drives supplier create the value and bring values to all of customers.
WhatsApp)
May 31, 2019· An induction motor is an AC electric motor in which the electric current in the rotor needed to produce torque is obtained by electromagnetic induction from the magnetic field of the stator winding. The application of induction motor differs by the type of rotor which is being used:. Squirrel Cage Rotor; Slip Ring Rotor or Wound Rotor Type; Squirrel Cage Rotor
BALL MILL DRIVE MOTOR CHOICES - artec-machine. the wound rotor motor was preferred. In the late 1950s, when mills approached 2500 HP, the center drive mill arrangement with the enclosed geared drive using a high-speed synchronous motor became quite popular. In more recent times the wound rotor motor with the liquid rheostat has come into use in
systems for wound rotor motors and frequency converter drives. Improvements in power electronics technology and controls have resulted in variable frequency converters that offer high efficiency, high reliability and availability at competitive cost. The first Gearless Mill Drive .
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 characteristics. The main types are described and illustrated on these pages. Motors considered are .
Fixed speed drives, with wound rotor motors or synchronous machines, were the ... Liquid Resistor Starter (LRS) are containing agitated mechanical parts requiring... Read More. Starting of slip ring induction motor explained in an easy manner. ... where a 600kW ball mill motor is started by use of a secondary liquid. Read More. Wound Rotor ...
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.
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.
We have solutions for all motors and drives cement applications: LV & MV squirrel cage motors LV - frequency converters-- Single drive up to 2800 kW-- Multi drive up to 5600 kW MV - frequency converters 315 kW up to 27000 kW Direct Torque Control (DTC) Converter transformers DC drives (new & revamping) Slipring motors (wound rotor induction motors)
HiTorque Drive System: The SIEG drive on the mini lathe and mini mill incorporates a 350 Watt conventional wound rotor DC motor and PWM controller card. The gears provide two speed ranges to enhance low speed torque because the output torque of a DC drive like this falls off as the motor .
MCW were asked to produce a control system for 75kW slip ring fed, wound rotor induction motor that was being used to drive a steel rolling mill via a Radicon gearbox. At the heart of the system MCW used the Fairford Synergy intelligent soft starter to provide a controlled soft start and soft stop for the motor.
Wound-rotor motors deliver speed control of heavy and high-torque loads.What's 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 that's
the wound rotor motor was preferred. In the late 1950s, when mills approached 2500 HP, the center drive mill arrangement with the enclosed geared drive using a high-speed synchronous motor became quite popular. In more recent times the wound rotor motor with the liquid rheostat has come into use in
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 .
is currently the gearless mill drive (GMD). In GMD systems the motor's poles are directly installed on a pole flange on the mill shell, and the body of the mill itself becomes the rotor. Ring-geared mill drive For mills with standard diameters or requiring less than 20 MW (approx.) of power, ring-geared mill drives (RMDs) offer the best solution.
Ball Mill Drive Motor Choices. A wound rotor motor with power factor correction capacitors this is the most economical choice on a first cost basis this solution meets the requirements of all gear trains on the market for ball mills with this type of drive arrangement the acceleration time will be controlled by the ramp control used in the liquid rheostat
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 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. Fig. 1: SPWM carrier-sine input & 2-level PWM output.
Slurry Pump Drives; Conveyor Drives; Examples of completed projects include:-Windimurra Vanadium Mine Project: Windimurra Vandium Mine Application: Ball Mill Equipment: 1 x 5500kW 6 Pole 11000 volt Wound Rotor Induction Motor Location: Mount Magnet, Western Australia Kalgoorlie Consolidated Gold Mine Application: Ball Mill
Figure 4: typical SAG mill motor drive equipment. Since such drives Figure 3: one of two wound rotor motors for a 10,000kW SAG mill ICR SEPTEMBER 2009. are in volume production at this time, support should be available for years to come. Getting renewal parts for older thyristor based SPR drive .
A wound-rotor motor, also known as slip ring-rotor motor, is a type of induction motor where the rotor windings are connected through slip rings to external resistance. Adjusting the resistance allows control of the speed/torque characteristic of the motor. Wound-rotor motors can be started with low inrush current, by inserting high resistance into the rotor circuit; as the motor accelerates ...
Posts: 43. Rating: (0) Dear all, i have task to change two motor drives of wound rotor type with new VFD drives, data about old drives is given in atachments, i need some sugestions which drives should be good for this application
drive application is a dual-pinion SAG mill driven by two 5,000 kW wound rotor induction motors (WRIM). Two TMdrive- 10SPRs control motor speed by recovering rotor current and returning the power to the utility supply.
Born and established in 1886, pioneered and developed the electric motor and generator industry oriented from Dresden, at the East of Germany. Please join our local website and web shop to get overview about current promotions and activities.
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. Designed and manufactured in Europe to CSE Uniserve's specifications, offers the ultimate in single or dual motor .
WhatsApp)
Online Chat
Sales Hotline