Podcast Beta
Questions and Answers
What is the mode in which the rotor rotates in a (CCW) direction?
Which equation represents the voltage of the excited phase?
What characteristic makes the torque constant of SRM non-constant?
What does the term $rac{dL}{d\theta}$ represent in the torque equation?
Signup and view all the answers
Why does an SRM not have a steady state equivalent circuit like a DC motor?
Signup and view all the answers
What does the term $\frac{dL}{d\theta}$ represent in the torque equation?
Signup and view all the answers
In which mode does the rotor rotate when phase D is excited?
Signup and view all the answers
What is the characteristic that makes the torque constant of SRM non-constant?
Signup and view all the answers
What is represented by the equation $\theta_5 = \theta_4 + \theta_1$?
Signup and view all the answers
Why does an SRM not have a steady state equivalent circuit like a DC motor?
Signup and view all the answers
Study Notes
Switched Reluctance Motor (SRM) Overview
- SRM features stator windings powered by DC voltage, with no windings or magnets on the rotor.
- Rotor must be salient, exhibiting a different number of poles (Pr) compared to the stator poles (Ps).
- Combinations of poles may include configurations such as 12/10, 12/8, 8/6, and 6/4.
- The ratio of stator poles (Ps) to rotor poles (Pr) must be a non-integer, e.g., 10/8, 8/6, or 6/4.
Operational Theory
- In the magnetic circuit, the rotor rotates towards the minimum reluctance position when excited.
- When two rotor poles align with two stator poles, the other rotor poles are misaligned with the remaining stator poles.
- The excitation of the aligned stator poles prompts rotation of the rotor to a new alignment position.
- Stator windings are energized from a DC supply based on the rotor's position, reflecting the variation of reluctance.
- The machine's operation is centered around the principle of switched reluctance.
Direction of Rotation
- The rotor's direction of rotation is opposite to the sequence of the stator excitation.
- For instance, if phase B is energized, the rotor rotates in a clockwise (CW) direction.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your knowledge of the basics of Switched Reluctance Motors (SRMs) with this quiz. Explore concepts such as the unique rotor configuration, winding setup, and theory of operation.
