Fundamental electrical characteristics of synchronous turbo-generators

Szwander, W.

doi:10.1049/ji-1.1944.0054

Cited by 2 publications

(4 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A convenient way of expressing the area leading to safe temperature rises in the synchronous machine is the operating chart proposed by Szwander in 1944 [11]. This chart presents the real and reactive power of the operating point on its y and x-axes, with the limits imposed by rotor heating and stator heating marking the edges of the safe area.…”

Section: Operating Chartmentioning

confidence: 99%

“…Like the synchronous chart, it is also convenient to draw the maximum power that can be delivered by the prime-mover as a further limit on the safe working area [11]. This appears as a horizontal line at the maximum output power of the generator for conventional prime-movers such as steam plants, and must be determined for each of the speeds represented in the charts.…”

Section: System Limitationsmentioning

confidence: 99%

See 1 more Smart Citation

Operating charts for the Brushless Doubly-Fed Machine (BDFM)

Logan

McMahon

2009

2009 IEEE International Electric Machines and Drives Conference

View full text Add to dashboard Cite

The Brushless Doubly-Fed Machine (BDFM) is an electrical machine that allows brushless operation in many applications where the Doubly-Fed Induction Generator (DFIG) is currently used. In recent years work on BDFM control means that the machine can now be run stably across its working range. However, little work has been done to define the working area in which BDFM can safely be operated without exceeding its material and stability limits. This paper sets out the theoretical backing for an operating chart of an ideal BDFM similar to that of the synchronous machine. It goes on to show that though the ideal chart gives the right form, non-ideal parameters (especially the finite magnetizing inductances) significantly effect the locations of the limits. Some preliminary experimental data obtained for a 225 frame size machine support the form of the chart. Finally it is shown how the operating chart can be used to chose appropriately sized converters for the BDFM.

show abstract

Section: Operating Chartmentioning

confidence: 99%

Section: System Limitationsmentioning

confidence: 99%

Operating charts for the Brushless Doubly-Fed Machine (BDFM)

Logan

McMahon

2009

2009 IEEE International Electric Machines and Drives Conference

View full text Add to dashboard Cite

show abstract

“…~\ cos 8 (6) in which r is the length of a ray, drawn in Fig. 8, from the value of E\X q on the horizontal axis, to the required locus.…”

Section: (8) Operation As a Synchronous Reluctancementioning

confidence: 99%

“…(6) simplifies to COS (9) which is, of course, the equation to the circle in Fig. (6) and Fig. It is also the equation for the current locus of the reluctance machine (see Fig.…”

Section: -E \ X Xj • 'mentioning

confidence: 99%

Operating characteristics of salient-pole machines

Walker

1953

Proceedings of the IEE - Part II: Power Engineering

View full text Add to dashboard Cite

By using the well-known 2-axis theory of Blondel the paper develops on a simple geometrical basis the steady-state characteristics of synchronous salient-pole machines. From these it is shown that appreciable economies can be realized by relating the short-circuit ratio, and thus the synchronous reactance, of an alternator to the stability characteristics required by the load. It is also shown that further economies can be obtained in both alternators and synchronous condensers by designing the excitation system to supply positive and negative field currents.Power-station operation can be simplified and made more reliable by the use of a combined watt-and VAr-meter with a dial based on the power chart evolved in the paper.The common basis underlying the operation of the salient-pole alternator, synchronous motor and condenser, and synchronous reluctance machine is shown by a simple generalized diagram, and the operation of these types of motors is briefly discussed.Equations are evolved for determining machine characteristics with greater accuracy than is given by the geometrical method.

show abstract

Fundamental electrical characteristics of synchronous turbo-generators

Cited by 2 publications

References 0 publications

Operating charts for the Brushless Doubly-Fed Machine (BDFM)

Operating charts for the Brushless Doubly-Fed Machine (BDFM)

Operating characteristics of salient-pole machines

Contact Info

Product

Resources

About