Drive system of switched Reluctance Motor

 Drive system of switched Reluctance Motor

The switched motor drive system consists mainly of four parts: the switched reluctance motor, the power converter, the controller and the detection portion. The power converter transforms ambient energy into an appropriate energy source for switched reluctant motors, And the controller handles location detection and current detection information, and accepts the set value instruction. The detecting element detects the related information. sensor and other components [12], as shown in Figure. 3          

  

Fig. 3 Switched reluctance motor drive system

Another control system for Aerospace Applications:

        As in other motor control systems, there are two different operating modes in the SRM drive system. The inverter chops in the first mode to regulate the current (PWM), and hence the torque, The inverter does not chop to the desired value, and in the second mode, but instead uses some form of phase angle regulation to regulation the torque[13]. Illustration. 6 Outlines the torque regulation, the SRM introducing a linearization between the regulated torque and the motor function variables specifying the torque of the machine. An idealized plot of the SRM's unsaturated step inductance is atop Fig. 6. The inductance is a limit if the poles of the rotor and the stator agree with each other. As mentioned earlier this rotor position is called the paired position. The-rotor poles and stator poles are 0_b, wide in the fuel pump SRM so that the rotor poles and stator poles overlap for 2*0_b, of rotor rotation, with the inductance increasing for the first 0_b, of rotor rotation and decreasing for the next 0_b. This leaves a band across the unaligned location of the rotor where the inductance of the phase does not shift easily with angle of the rotor. Since the motor's back EMF is proportional to the phase inductance shift rate, the machine's back EMF is low in the rotor angle range. It is also in this range of angles that the inverter phase leg is switched on to carry current into the phase, even though the machine's back EMF is equivalent to the bus voltage for rotor angles where the inductance of the motor varies [14].

references

[1].                   Lu C., Zhang G., Du C., Cheng J., Wu C. (2018) Design and Simulation of Switched Reluctance Motor Control System. In: Jia L., Qin Y., Suo J., Feng J., Diao L., An M. (eds) Proceedings of the 3rd International Conference on Electrical and Information Technologies for Rail Transportation (EITRT) 2017. EITRT 2017. Lecture Notes in Electrical Engineering, vol 482. Springer, Singapore

[2].                   J. V. Byme and M. F. McMullin, “Design of a reluctance motor as a lOkW spindle drive,” in Proc. 10 Motorcon, Sept. 1982.

[3].                   A. V. Radun, "High-power density switched reluctance motor drive for aerospace applications," in IEEE Transactions on Industry Applications, vol. 28, no. 1, pp. 113-119, Jan.-Feb. 1992, doi: 10.1109/28.120219.