What is the reference frame theory?
The reference frame transformation components allow simplification of analysis of three-phase AC circuits by performing projection of the three-phase quantities onto two stationary axes and by rotating the axes synchronously with the reference frequency.
What are the commonly used reference frames?
Reference frames commonly used in the analysis of electric machines and power system components include arbitrary, stationary, rotor, and synchronous reference frames.
What is Krons reference frame theory?
Kron [3] introduced a change of variables which eliminated the time- varying inductances of a symmetrical induction machine by transforming both the stator variables and the rotor variables to a reference frame rotating in synchronism with the rotating magnetic field.
What is stator reference frame?
3.3. Stationary reference frame control, also referred to αβ-control, regulates control signals in stationary two-phase frame.
Why is reference frame important?
reference frame, also called frame of reference, in dynamics, system of graduated lines symbolically attached to a body that serve to describe the position of points relative to the body.
What is reference frame give example?
Typically the observer is at rest in the reference frame; in this context, the term is “observational frame of reference.” For example, when you see a ball roll down a street, you can tell the ball is moving because the frame of reference is the streets, whatever may be on the side of the roads, or the Earth.
What is arbitrary reference frame?
1. Axis used as reference rotating at a chosen speed. Learn more in: EFWA as a Method of Optimizing Model Parameters: Example of an Expensive Function Evaluation. Find more terms and definitions using our Dictionary Search.
What is DQ model of induction motor?
The d,q model is employed to mathematically describe the behavior of the induction motor in the stationary and synchronous reference frame. The stator and rotor currents are high oscillatory in the stationary reference frame.
Why is frame of reference important?
Frames of Reference serve a valuable purpose, because they enable us to take in a wide variety of information, and process it based on our past experience and values. In fact, an individual’s Frame of Reference promotes life-stability and quicker decision making.
Why is a frame of reference needed?
The different observations occur because the two observers are in different frames of reference. A frame of reference is a set of coordinates that can be used to determine positions and velocities of objects in that frame; different frames of reference move relative to one another.
Why do we use reference frames?
What is the synchronous reference frame theory?
Synchronous Reference Frame theory The inductance of synchronous and induction machines are functions of rotor speed and the coefficient equations of voltage and current are represented in differential equations describing the time varying behavior of these machine.
What is a frame of reference in psychology?
A frame of reference makes certain information in the stimulus explicit and therefore readily available for utilization in information processing, and hides other information, making it less available. Jane Goodman, Christine Locke, in Occupational Therapy for People with Learning Disabilities, 2009
What is transformation in frame theory?
Reference frame theory. TRANSFORMATION The process of replacing one set of variables by another related set of variables is called transformation. In the study of power systems and electrical machine analysis, mathematical transformations are often used to decouple variables, to facilitate the solution of difficult equations with time-varying…
Why do we use categorical frames of reference?
Academic disciplines use categorical frames of reference based on higher levels of semantic distinction, consistency and agreement within a community of expert practice more than is commonly the case in natural language.