Response Based Comparative Analysis of Two Inverter Fed Six Phase PMSM Drive by Using PI and Fuzzy Logic Controller

Abstract

This Paper gives a complete modeling and simulation of a two inverter fed six phase permanent magnet synchronous motor drive system, Then response based comparative analysis is done on starting torque ,settling time, Steady state current at various speed levels and torque levels by changing proportional-integral (PI) controller to Fuzzy logic controller. The PI controller has some disadvantages like, more settling time, sluggish response due to sudden change in load torque etc. So an intelligent controller, based on fuzzy logic is introduced which replaces the PI-controller and its drawbacks. The performance of both the controller has been investigated and studied by comparing the different plots obtained by setting various speed level both incremented and decremented speed, at different load conditions like Noload, fix load and dynamic load through Matlab / Simulink environment. Finally it is concluded from the result that fuzzy logic based controller is robust, reliable gives quick response with high starting torque and more effective than the conventional PI controller. It is also observed that both the proposed model can also run above rated speed significantally. Keyword:Drive Fuzzy logic controller Inverter PI controller PMSM

Simulation and Analysis of Modified DTC of PMSM

“…The overall system consisting of the modeling of SPMSM, estimation of stator flux and torque block, determination of sector, comparator, Vector modulation and three phase two level inverter which are modeled based on mathematical equations from equations (1) - (12). In this paper, the motor parameters are consider [9], [13], [14] as shown Table 1.…”

“…A PI controller is used to estimate the torque from the difference between the reference and actual speed of the motor [12] as shown in Figure 7. The parameters of PI controller K p and K i should be matched and to achieve the high performance of the drive system.The most of the cases, a large value of K p will accelerate the dynamic response of the system and K i value influence the static error.…”

Simulation and Analysis of Modified DTC of PMSM

“…The parameters of PI controller K p and K i should be matched and to achieve the high performance of the drive system.The most of the cases, a large value of K p will accelerate the dynamic response of the system and K i value influence the static error. The overall system consisting of the modeling of SPMSM, estimation of stator flux and torque block, determination of sector, comparator, Vector modulation and three phase two level inverter which are modeled based on mathematical equations from equations (1) - (12). In this paper, the motor parameters are consider [9], [13], [14] as shown Table 1.…”

Comperative Performance Analysis of PMSM Drive Using MPSO and ACO Techniques

“…The Proportional Integral Derivitive (PID) controller is one of the traditional controllers which are widely used in many drive system. But it has sluggish response due to sudden change in load torque and the sensitivity to controller gains (K p , K i and K d ) [3]- [5]. The control effect of PID depends solely on tuning of PID controller.…”