Demonstration of Synchronous Motor Start by Rotor Polarity Inversion

  title={Demonstration of Synchronous Motor Start by Rotor Polarity Inversion},
  author={J. J. P{\'e}rez-Loya and C. J. D. Abrahamsson and F. Evestedt and U. Lundin},
  journal={IEEE Transactions on Industrial Electronics},
Synchronous motors are reliable and efficient, but it is relatively difficult to start them. In some cases, a variable frequency drive is utilized. In some other, asynchronous start is achieved by virtue of induced currents in a solid rotor, or a rotor damper cage installed for this purpose. In this contribution, a method to start a synchronous machine without a damper cage is presented. The starting was achieved by inverting the polarity of the rotor field winding in a timely manner with… Expand
Start of a synchronous motor using rotor field polarity inversion and rotor back-emf sensing
Synchronous motors are hard to line start due to torque pulsations at zero rotor speed and low starting torque when started using induced current in a damper squirrel cage. By inverting the rotorExpand
Sensorless High-Torque Start of a Synchronous Motor using Rotor Field Polarity Inversion
Synchronous motors are hard to line start due to torque pulsations at zero rotor speed and low starting torque when started using induced current in a damper squirrel cage. By inverting the rotorExpand
Experimentally validated model of a fast switched salient pole rotor winding
The article proposes a model of a salient pole synchronous machine field winding based on a single transmission line model. An experimental method to derive the parameters is also presented andExpand
The influence of eddy currents on the excitation winding impedance of solid and laminated salient pole synchronous machines
This work investigates the establishment of steady-state eddy currents in solid and laminated salient poles and rotor rim of synchronous machines due to a periodic excitation voltage. It shows thatExpand
Continuous Evolution and Modern Approaches of Excitation Systems for Synchronous Machines
A comprehensive survey of the modern approaches of excitation systems for synchronous machines, including the fundamental theory, typical de-excitation methods and excitation equipment topologies is presented. Expand
Excitation System Technologies for Wound-Field Synchronous Machines: Survey of Solutions and Evolving Trends
This contribution presents a comprehensive survey of classical and modern methods and technologies for excitation systems (ESs) of (WFSMs) of wound-field synchronous motors and generators. Expand
Enhanced partial frequency variation starting of hydroelectric pumping units: Model based design and experimental validation
A novel starting method is proposed for the revamping of a hydroelectric power plant, where a synchronous machine is used to drive the pump, leading to the creation of a startup sequence capable of being integrated into the existing excitation control systems’ software. Expand
An experimentally determined field winding model with frequency‐dependent parameters
In this work a set of experimental procedures is presented for determining the main electrical distributed parameters of the field winding in salient pole synchronous machines. It applies to the elExpand


Analysis of the starting transient of a synchronous reluctance motor for direct-on-line applications
Current industrial trend shows a growing interest towards energy efficiency within industrial processes. In this field, electric motors play a paramount role. Traditionally, high efficiencyExpand
Rotor Configurations for Improved Starting and Synchronous Performance of Line Start Permanent-Magnet Synchronous Motor
Analysis, simulation, and experimental results indicate that the proposed rotor configuration leads to improved steady-state performance, by utilizing 10% less magnet volume than the benchmarked spoke rotor. Expand
Analysis of Direct-On-Line Synchronous Reluctance Machine Start-Up Using a Magnetic Field Decomposition
Direct-on-line synchronous reluctance machines combine the characteristics of induction machines and synchronous reluctance machines. Saturation of core materials, the eddy currents, and theExpand
Starting large synchronous motors in weak power systems
Utility company standards for power quality are making it difficult for industrial users to start large induction and synchronous motors due to high inrush current. This paper will present a largeExpand
Evaluation of the Efficiency of Line-Start Permanent-Magnet Machines as a Function of the Operating Temperature
The standard squirrel-cage induction machine has nearly reached its maximum efficiency. In order to further increase the energy efficiency of electrical machines, the use of permanent magnets inExpand
An investigation into damper winding failure in a large synchronous motor
This paper deals with operational issues related to a 36-MVA, 11-kV synchronous motor used to drive a reciprocating compressor in a process industry. Extensive damage to the motor's damper windingExpand
Advances on Single-Phase Line-Start High Efficiency Interior Permanent Magnet Motors
A unified analysis of single-phase IPM motor that permits the determination of the steady-state, dynamic, and transient performances is presented and leads to more accurate numerical results and meets the engineering requirements more satisfactorily than any other methods. Expand
Excitation control of the synchronous motor
  • R. Schaefer
  • Engineering
  • Conference Record of 1998 Annual Pulp and Paper Industry Technical Conference (Cat. No.98CH36219)
  • 1998
This paper provides a detailed discussion of the basic theory of operation and control of the synchronous motor. It describes typical synchronous motor starting and provides information regardingExpand
Starting of large motors-methods and economics
  • J. Nevelsteen, H. Aragón
  • Engineering
  • Record of Conference Papers., Industrial Applications Society 35th Annual Petroleum and Chemical Industry Conference,
  • 1988
The available starting methods are discussed for motors above 3000 hp, focusing on technical and economic aspects. The following schemes are discussed: direct online, reactor start, auto transformerExpand
Large Synchronous Motor Failure Investigation: Measurements, Analysis, and Lessons Learned
A failure analysis case study is presented for three 11 000-hp synchronous motors at a gas–oil separation plant along with the starting issues faced prior to the occurrence of a permanent damage, and the fundamentals of dynamic motor acceleration requirements to achieve a successful start are reviewed. Expand