Phase current rise time

This method can realize the initial position estimate of SRM under standstill and inertia status ,it is quite easy to implement, the proposed method not only reduces the initial position estimation error due to improve the reliability of motor starting, and realize motor running of no inversion. The simulation and experimental results verify the correctness and feasibility of the proposed algorithm.

8p praishy2 27-02-2019 22 2   Download

Long-time protection: The long-time protection function protects cables (phases and neutral) against overloads. This function is based on true rms measurements. Thermal memory: The thermal memory continuously accounts for the amount of heat in the cables, both before and after tripping, whatever the value of the current (presence of an overload or not). The thermal memory optimises the long-time protection function of the circuit breaker by taking into account the temperature rise in the cables. The thermal memory assumes a cable cooling time of approximately 15 minutes....

31p nmtinh 10-11-2010 322 66   Download