application of synchronous motor drives in fiber spinning mills

A novel method i.e. adjustable DC bus voltage, has been proposed in 2009 [23] for low speed EKF sensorless control of permanent magnet synchronous motor (PMSM) …

PMSM drives are very beneficial in traction applications, where high torque is required at low rotation speed. Also in applications where total efficiency plays an important role e.g. fans, pumps ...

The subject of this paper is a synchronous drive of grinding ball mills 4 MW, 150 rpm, 6 kV, 50 Hz on the base of PWM CSI. The system is installed at the concentrating plant of Norilsknickel in ...

The synchronous motor used in high-power medium voltage (MV) drives can be generally classified into two categories: wound rotor synchronous motor (WRSM) and permanent magnet synchronous motor (PMSM).

3. Need speed synchronization to inverter output frequency by using rotor position sensor and sensor less control. 11. Write down any two properties of synchronous reluctance motor. High output power capability. Ability of the rotor to withstand high speeds. Negligible zero-torque spinning losses.

After this lecture and exercises you will be able to: Identify, based on the cross-section of the rotor, if the motor is magnetically anisotropic Explain what is the reluctance torque …

For close to half a century, the textile and fiber industries have been using synchronous motors in their spinning applications. These motors have traditionally been of the synchronous reluctance-type due mostly to the cost of their nonexcited competitor: the permanent magnet (PM) motor. The steady decline in the cost of permanent …

Some of the typical applications of high speed synchronous motors are such drives as fans, blowers, dc generators, line shafts, centrifugal pumps, compressors, reciprocating pumps, rubber and paper mills. Synchronous motors are used to regulate the voltage at the end of transmission lines. In textile and paper industries synchronous …

Abstract: According to the accurately synchronous technical requirement of fiber spinning multi-motor system, this paper presents a Fuzzy-PID control method which is established on the basis of deviation compensation principle. Master-slave control strategy is also …

4. Mention some applications of synchronous reluctance motor. Fiber spinning mills Industrial process equipment Metering pumps Wrapping and folding machines. 5. What are the advantages of increasing Ld/Lq ratio in SyRM? 1. Motor power factor ioncreases. 2. I2R Losses reduced. 3. Reduced volt ampere ratings of the inverter driving the machine. 6 ...

A synchronous motor is an AC motor, which is identical to the alternator or synchronous generator. Similar to the dc generator, the synchronous generator can be made to run as a synchronous motor when driven electrically. The synchronous motor converts the electrical energy input into mechanical energy. In the synchronous motor, …

Abstract Three different motor drives for electric traction are compared, in terms of output power and efficiency at same stack dimensions and inverter size. Induction motor, surface mounted permanent magnet (SPM) and …

AC adjustable speed motor drive systems are the preferred technology for new rolling mill installations and modernization projects. TMEIC designs and manufactures two types of AC solutions for this purpose. Salient pole synchronous motors that meet the high power and torque demands of a hot strip mill, as well as roughing and finishing stands.

Synchronous Motors are the ones that are designed to operate or rotate at synchronous speed. Through Synchronous Motor Drives the various processes like starting, pull in, or braking of the synchronous motor becomes easy thereby allowing smooth operations.. These are very much useful in variable-speed synchronous motor drives operating at …

According to the accurately synchronous technical requirement of fiber spinning multi-motor system, this paper presents a Fuzzy-PID control method which is …

Load Commutated Inverter (LCI) Theory. The LCI operation is simple and reliable. It uses load-commutated, phase-controlled power thyristor technology to supply power to the stator windings of a high efficiency synchronous motor. The power circuit has a source converter, connected to the power supply and a load converter connected to the motor.

operation. We offer optimized ABB motor-drive packages for the best possible variable speed solution. These consist of an ABB synchronous motor combined with an ABB …

1 minute. 1 pt. PMSM stands for. Permanent magnet synchronous motor. Permanent magnet silk machine. Permanent magnet synchronous material. None of the above. 2. Multiple Choice.

This scheme is commonly used for the control of multiple synchronous reluctance or permanent magnet motors in fiber spinning, textile and paper mills where accurate speed tracking between the motors is required. Synchronous Motor Variable Speed Drives: Variable Frequency Control: Synchronous speed (Eq. (7.3)) is directly proportional to …

This paper reviews various Mill drive configurations and improved synchronous motor characteristics when used with more advanced Current Source …

According to the accurately synchronous technical requirement of fiber spinning multi-motor system, this paper presents a Fuzzy-PID control method which is established on the basis of deviation compensation principle. Master-slave control strategy is also presented in this paper. In the system, programming and debugging by using SIMENS s7-200PLC, …

synchronous motor. The synchronous motor has one 3-phase winding in the stator. The current in each phase is controlled by a 12-pulse cycloconverter. The 12-pulse configuration is obtained by the wye-delta connection in the secondary winding of the power transformers and reduces the low frequency current harmonics in the load and at the input ...

Abstract: For close to half a century, the textile and fiber industries have been using synchronous motors in their spinning applications. These motors have …

The motor is underutilised as it is oper­ating at leading power factor. A self controlled synchronous motor is, therefore, a, substitute for a dc motor drive and finds application where a dc motor is objectionable due to its mechanical commutator, which limits the speed range and power output. Variable frequency drives employing synchronous ...

When utility softness was a concern, the super-synchronous motor was used. In other parts of the world, 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.

per motor). The motor selected was sized at 6.5MW with a rated speed of 180rpm. As the customer was initially unsure as to which technology to use, the Integrated Drive System was proposed with both Synchronous and Asynchronous Motors. Table 2 compares the motor parameters using the Synchronous version as the baseline.

Some of their key advantages include: Constant speed operation: Synchronous motors maintain a constant speed irrespective of the load. The speed is proportional to the frequency of the power source, making them ideal for precision operations. Power factor correction: They can operate under leading power factors, …

In this article we will discuss about the applications of electric drives. 1. Machine Tool Drives: Many machine tools require a simple more or less constant speed drive. For this squirrel- cage induction motors together with simple manual controls are adequate. For transmission of power to cutting tools or work pieces at different finite number ...

According to the accurately synchronous technical requirement of fiber spinning multi-motor system, this paper presents a Fuzzy-PID control method which is established on the basis of deviation compensation principle. Master-slave control strategy is also presented in this paper. In the system, programming and debugging by using …

Introduction. AC adjustable-speed motor drive systems have been established as the preferred. technology for new rolling mill installations and extensive modernization projects. The AC adjustable-speed motor drive system provides metals mills with many advantages compared to traditional DC drive technology, including: Improved drive effi ciency.

According to the accurately synchronous technical requirement of fiber spinning multi-motor system, this paper presents a Fuzzy-PID control method which is established on the basis of deviation ...

Synchronous motor is used as synchronous condenser for power factor correction or improvement. Synchronous condenser is an over-excited synchronous motor without having any mechanical load connected to its shaft. A synchronous condenser when connected to supply mains takes leading current and hence delivers the …

A Synchronous Motor is an AC electric motor in which the speed of the rotor is the same as that of the revolving field in the machine. The synchronous motor runs at synchronous speed (i.e, Ns= 120f/P). It is to be noted, that the synchronous motor is a 3-phase motor and its frequency remains constant due to which it obtain …

fiber spinning mills ... p>This Paper gives a complete modeling and simulation of a two inverter fed six phase permanent magnet synchronous motor drive …