Speed of a DC Motor
EMF equation of DC motor is given by
E = NPΦZ / 60A
Here,
N = Speed of rotation in rpm
P = Number of poles
A = Number of parallel paths
Z = Total no conductors in armature
Speed of rotation N = ( 60A / PZ ) x ( E / Φ )
N = E / K Φ
Where k = PZ / 60 A is a constant
Therefore, the speed of a DC motor is directly proportional to the emf of rotation (E) and inversely proportional to the flux per pole (φ).
Speed Regulation of DC Motor
At the point when a DC motor gets stacked, its speed decreases gradually which is not beneficial for the machine. So the distinction between no-heap and full-load rates not being most important means it is not likely to make a difference. An engine that can keep an almost consistent speed under changing burdens is said to have major areas of strength, and that implies that the distinction between no heap and full burden speed is little. Speed guidelines for extremely durable magnet DC motors are great, going somewhere in the range of 10 and 15%, but DC shunt engines are somewhat under 10%. DC series motors have bad guidelines. For a compound DC motor utilizing DC total compound, the speed guideline is around 25%, though the differential compound has a superb value of 5%.
Table of Content
- What is DC Motor Speed Control?
- Speed of a DC Motor
- Speed Regulation of a DC Motor
- Applications
- Conclusion
- FAQs