DTC | ABB

Each drive ran a 15 kW, four-pole induction motor at its rated torque reference and with the load machine controlled to make slow speed reversals near zero speed. Both drives show remarkable sensorless control ability to operate for long periods in the near zero speed range, but the new ACS880 has less deviation from the torque reference and ...

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Published April 10, 2010 Draw Management

As it makes its way through the paper machine, some other properties are created. Unfortunately, as it makes its way through the machine, it also ... Changing group length and drive arrangement, and coating dryer cylinders. The remainder of this paper will briefly review the Draw Draw Management tools individually. Published April 10, ...

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Designing Unwind Tension Control | New Era Converting

In these cases either a pneumatic pressure or electrical power is applied to the brake assembly to generate the required torque. The resultant braking force is regulated by adjusting the pneumatic pressure or electric power which varies the drag that is applied to .

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Angular Motion - Power and Torque

Related Topics . Dynamics - Motion - velocity and acceleration, forces and torques ; Related Documents . Conn-Rod Mechanism - The connecting rod mechanism; Conservation of Momentum - Momentum of a body is defined as the product of its mass and velocity - recoil calculator; Electric Motors - Power and Torque vs. Speed - Speed of electrical motors - output power and torque

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AN3234: Washing Machine Three-Phase AC Induction Motor .

The latest trend in washing machine design is to replace Table of Contents traditional drive systems with modern, electronically controlled, brushless drives. In the past, washing machine designs employed two widely used drive systems. The older designs use electromechanically controlled two-speed single phase AC induction motors.

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Improved Energy Efficiency in Paper Making Through ...

1.1 Paper Drying Uses Most of Paper Making Energy to Remove Less than the Last 1% of Sheet Moisture Siitonen and Ahtila [1] report that 80% of the energy used in paper making is consumed in the dryer, primarily in the steam supplied to the dryer. Furthermore it is easily demonstrated that this 80% of paper making energy used in the dryer removes

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Extended condensate torque estimation considering the ...

The presence of condensate inside the dryer cylinders of paper machines produces an important increase of the required torque and power during the startup. A condensate load over 1% accumulated can produce a drive overload and eventually an overload trip.

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Basics of Web Tension Control Summary

The presentation covers the different aspects of machines including unwinds, rewinds and point-to-point applications. It also looks at the different methods of control be it either speed or torque. Lastly we will explore the different types of tension systems including: manual, open loop and closed loop. We will discuss different components

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Extended condensate torque estimation considering the ...

The presence of a condensate in dryer cylinders during the startup produces an important increase of the required torque and power that adversely affects the drive and mechanical components of the ...

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Paper Machine System Diagram - TMEIC

torque is required, increased speed ... determine the power ratings of the dryer drives. Yes . TMEIC Corporation Paper Machine System Diagram Forming Section Press Section Dryer Sections Calender Reel Paper Machine One-Line Size Press Head Box Driven roll Mechanical Components of Paper Machine Associated Drive Control Concepts Regenerative ...

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Elevator Machine and Drive System ~ Electrical Knowhow

Third: Elevator Machine and drive system Driving machine, this is the power unit of the elevator, and usually located at the elevator machine room. The Driving machine used to refer to the collection of components that raise or lower the elevator. These include the drive motor, brake, speed reduction unit, sheaves and encoders.

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Drive Power and Torque in Paper Machine Dryers

Introduction Drive Power Tests Dryer Drive Power Dryer Torque Analytical Models Summary Acknowledgements 3 4 5 7 14 19 19 CONTENTS EXECUTIVE SUMMARY A basic parameter in the design of a paper machine dryer drive system, whether it has an open gear, enclosed gear, or felt drive, is the drive power requirement.

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DRIVES G. Kaspari, C. Hölt ervennhoff* 'Silent Driv e'!

In 1989 the technical paper "silent dryer drive concept for paper ma-chines" was published in the USA by Joseph G. Miller, Product Man-ager Drives of the Beloit Corporation. A ccor ding to the American defi-nition the term is split into two different processes: 'silent felt roll drive' and 'silent dryer drive'.

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Horsepower Formulas - Torque, Speed, Gear Rducers

ACCELERATION TORQUE CALCULATION: When a machine must be accelerated to a given speed in a certain amount of time, the drive system HP may have to supply additional torque during acceleration to compensate for the load inertia. The acceleration torque must be added to the normal torque requirements of the machine.

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Drive Types and Specifications - ScienceDirect

Jan 01, 2018· Provided the motor excitation is kept constant, the DC drive power factor is proportional to motor speed. Since most pumps, compressors, and fans demand a torque proportional to the square of speed, constant excitation systems are used and so the above relationship applies. A typical power factor, at maximum rated speed for a DC drive, is 0.85.

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PMC800 ABB's control solution for paper machine drives

Paper machine drives control Specifically developed for paper machine drive control, PMC800 can handle the specialized needs of any paper mill's drive system. PMC800 features control application software for the drive section, machine section and machine type, as well as common control for the entire machine.

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How Many Watts Does a Dryer Machine Consume? | Hunker

Note that the energy factor for gas dryers still uses kilowatt-hours as its unit even though the appliance primarily uses natural gas, making it impossible to compare the energy factors of a gas dryer versus an electric one. On the other hand, you can use the energy factor to compare the efficiency of two machines with the same power source.

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Condensate Effects on Power and Torque Requirements During ...

R.P. , " Paper Machine and Winder Drives ", Pulp and Paper Manufacture, Vol. 7: Paper Machine Operations, Chapter XX, TAPPI Press, Atlanta, pp. 525 – 547. Condensate Effects on Torque .

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Innovative Design and Development of Transmission System ...

Abstract—A transmission is a machine that consists of a power source and a power transmission system, which provides controlled application of the power. Often the term transmission refers simply to the gearbox that uses gears and gear trains to provide speed and torque conversions from a rotating power source to another device.

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MATLAB/Simulink based model for 25 kV AC Electric Traction ...

i) Six- Step Mode : The torque, Speed, currents and voltages developed by an induction machine drive during normal operation with rectified input supply to inverter at six-step mode with rectifier are shown in "Fig. 9a, b, c, & d". Fig. 9 a: Torque profile of motor in six step mode under normal operation

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Condensate Effects on Power and Torque Requirements During ...

Condensate Effects on Power and Torque Requirements During Starting of Dryer Sections ... a comparison is made to the power requirements of several actual paper machine dryer sections undergoing various starting procedures. ... then the sizing of the section drive capacity must take into consideration the additional indrive load resulting from ...

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SIMULATION OF ELECTRIC MACHINE AND DRIVE SYSTEMS .

synchronous machine is represented in the rotor frame. In the common dq frame, the machine dynamic equations appear as differential equations with constant coefficients (independent of rotor position) and nonlinearities confined to products of variables associated with speed voltages and torque components.

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A Vertical Wind Generator From Washing Machine Motor : 15 ...

does it matter which washing machine motor is used? I am working with an orphanage in Honduras that has a lot of wind and very poor power with a desire to teach teens how to make a generator that would provide the power they need for the dorms. Ebay has a motor for $10, Whirlpool Washer Drive .

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Dyson V11 Torque Drive

Dyson V11 Torque Drive (Copper) Let's get your machine working ... Wash the pleated paper element of the filter unit first; hold the filter unit under a cold water tap with the foam element downwards and run cold water over the pleated paper. ... Due to this reduction in the power, when the machine is removed from charge and powered on for the ...

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AN3234: Washing Machine Three-Phase AC Induction Motor .

The latest trend in washing machine design is to replace Table of Contents traditional drive systems with modern, electronically controlled, brushless drives. In the past, washing machine designs employed two widely used drive systems. The older designs use electromechanically controlled two-speed single phase AC induction motors.

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What is Electrical Drive? - Definition, Parts, Advantages ...

Electrical Drive Definition: The system which is used for controlling the motion of an electrical machine, such type of system is called an electrical drive.In other words, the drive which uses the electric motor is called electrical drive. The electrical drive uses any of the prime movers like diesel or a petrol engine, gas or steam turbines, steam engines, hydraulic motors and electrical ...

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Axial-Flux Motors and Generators ... - Power Electronics

Today, most electric machines operate with radial flux (RF). Magnax offers a new concept, though—a machine that operates with axial flux (AF). Figure 1 provides a comparison of the RF and AF technologies.. 1. Comparison of radial- and axial-flux machines. Magnax says the key to the high power density is its motors' yokeless AF design with two rotors at each side of the machine.

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High Performance Electrical Motors for Automotive ...

The synchronous reluctance machine (SyR) is also a candidate for a rare-earth-free machine, but its torque density, power density, power factor and efficiency are inferior compared to PM motors. By adding the proper amount of low-cost permanent magnets in the rotor, the torque density and power density can be improved.

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Paper Machine Line Shaft Drives - Convergence Training

In both types, power is transmitted the length of the machine by a line shaft, running parallel to the machine. Cone pulley drive systems, use cone-shaped pulleys and a long flat belt loop to power each section of the machine. In non-pulley direct drive systems, each section of the machine is connected to the line shaft by mechanical means.

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Pulp and paper | SKF

Pulp and paper Led by producers from North America, Northern Europe and East Asia, the pulp and paper industry is the one of the largest in the world. Despite gains in operating earnings and production volumes, the industry is being reshaped by several megatrends, including globalisation, environmentalism, digitalisation and e-commerce.

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Condensate Effects on Power and Torque Requirements During ...

Condensate Effects on Power and Torque Requirements During Starting of Dryer Sections ... a comparison is made to the power requirements of several actual paper machine dryer sections undergoing various starting procedures. ... then the sizing of the section drive capacity must take into consideration the additional indrive load resulting from ...

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planetary gearbox, helical planetary ... - ever-power

The gearbox can be used on crushing machines, grinding machines, dryers, sand making machines, vibrating feeders, grab steel machines, crawler loaders, and other metallurgical and mining machines. Planetary Gearbox for hydraulic side dump rock loader

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The Design of Motor Drive for Brushless DC Motor | IntechOpen

Mar 11, 2018· The electric machines have been applied to the industrial and commercial areas for several decades. The high performance of control and fast dynamic response of electric machines can be achieved via motor drive because of high development of semiconductors such as the microcontroller and power transistors. Brushless DC motor (BLDC) and permanent magnet AC synchronous motors .

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