Reliability, availability, and maintainability of high-power variable-speed drive systems

2000 ◽  
Vol 36 (1) ◽  
pp. 231-241 ◽  
Author(s):  
P. Wikstrom ◽  
L.A. Terens ◽  
H. Kobi
Keyword(s):  
High Power ◽  
Variable Speed ◽  
Variable Speed Drive ◽  
Drive Systems

Reliability, Interfacing and Standardization Aspects in High Power AC Drive Applications

1998 ◽  
Author(s):  
Heinz Kobi ◽  
Lucien Terens ◽  
Per Wikström
Keyword(s):  
High Power ◽  
State Of The Art ◽  
Project Planning ◽  
Variable Speed ◽  
Variable Speed Drive ◽  
Power Drive ◽  
Ac Drive ◽  
Drive Systems ◽  
Level Of Understanding ◽  
Modular Structures

Selecting, buying and installing an electric variable speed drive system (EVSDS) for a high power drive application is an activity with project character. It is not a product business. In order to bring the audience to the same level of understanding, there is a chapter with an overview of different VSDS technologies. This overview also gives our opinion of what a large AC drive should be capable of. In the main part of the paper we will review the project handling process. The stages of this process cover project planning, all phases of the drive order, operation, maintenance, servicing and upgrading if needed, up to dismantlement. Focus is set on those issues that have the greatest impact on the reliability of the drive. Besides state-of-the-art technology, two important preconditions are required for a successful application of variable speed drive systems. These are proper drive integration into the drive environment and standardization based on modular structures. By means of a case history we will report on a large AC drive project and the experience gained in this context. This paper is in particular addressed to application engineers and persons who are involved in selection and operation of large VSDSs (from a few megawatt to hundreds of megawatt).

EMC Installation for Variable Speed Drive Systems (VSDs)

2019 ◽  
pp. 308-329
Author(s):  
Safwan Nadweh ◽  
Zeina Barakat ◽  
Ghassan Hayek
Keyword(s):  
Motor Control ◽  
Electromagnetic Fields ◽  
Capacitive Coupling ◽  
Variable Speed ◽  
Variable Speed Drive ◽  
Drive Systems

This chapter introduces EMC installation for variable speed drive systems. As an introduction, EMC standards have been mentioned in order to define the requirements characteristics, besides the fundamentals of static, electric, magnetic, and electromagnetic fields. Both inductive and capacitive coupling have been discussed to deal with shielding. Finally, VSDS emission and electromagnetic interferences were studied with installation requirement in VSDS (supply cables, cable between converter and motor, control cables, earthing requirements, and grounding).

Power Quality and Stability Analysis of Variable-Speed Drive Systems (VSDS)

2019 ◽  
pp. 387-411
Author(s):  
Safwan Mhrez Nadweh ◽  
Ola Ahmad Khaddam
Keyword(s):  
Stability Analysis ◽  
Power Quality ◽  
Open Loop ◽  
Variable Speed ◽  
Crest Factor ◽  
Variable Speed Drive ◽  
Control Loops ◽  
Quality Specifications ◽  
Drive Systems

This chapter introduces an analysis of power quality of variable-speed drive systems (VSDS). In this chapter, several issues have been discussed as VSDS in terms of cost and effectiveness, VSDS control loops (open loop, closed loop), and power quality in VSDS. Harmonics standards and harmonics in VSDS were discussed in this chapter in addition to highlighting the effects of harmonics on power factor, crest factor, and other power quality specifications. The solutions used to mitigate the harmonics in VSDS were discussed in detail. Finally, simulation of the conventional VSDS model and VSDS with one harmonic mitigation solution in order to clarify the usefulness of using this solution on power quality specifications were discussed.

scholarly journals Time response enhancement for variable speed drive systems by using five-level cascade four quadrant chopper in dc-link

Heliyon ◽  
2020 ◽  
Vol 6 (8) ◽  
pp. e04739 ◽  
Author(s):  
Safwan Nadweh ◽  
Ola Khaddam ◽  
Ghassan Hayek ◽  
Bassan Atieh ◽  
Hassan Haes Alhelou
Keyword(s):  
Time Response ◽  
Variable Speed ◽  
Variable Speed Drive ◽  
Response Enhancement ◽  
Drive Systems ◽  
Four Quadrant

A New Central Control Scheme for Future Micro-Grid Systems Considering Variable Speed Drive Systems and Fuzzy Logic Control System

2019 ◽  
Vol 8 (2) ◽  
pp. 25-46
Author(s):  
Safwan Mhrez Nadweh ◽  
G. Hayek ◽  
Bassam Atieh
Keyword(s):  
Power Systems ◽  
Power Quality ◽  
Electrical Power ◽  
Variable Speed ◽  
Nonlinear Loads ◽  
Distortion Factor ◽  
Variable Speed Drive ◽  
Grid Systems ◽  
Micro Grid ◽  
Drive Systems

The increased use of nonlinear loads in power systems have caused problems with the quality of electrical power systems, which affects its performance. One of the most important nonlinear loads is variable speed drive systems (VSDS) which causes issues to the industrial plants power supply. In this article, the authors compare different control methods to apply the bias voltages required to operate transistors in the four-quadrant chopper which added to the dc- link of the variable-speed drive system in order to improve power quality, considering future micro-grid systems. A selection is then made of the appropriate one that improves power quality specifications. This article discusses the issues related to VSDS, such as total harmonic distortion factor THD%; the ripple factor of the DC current and voltage of the VSDS; and its harmful effects on the power system.

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