Closed Loop Sliding Mode Controller Controlled Quazi Z Source Inverter Fed Permanent Magnet Brushless DC Motor Drive

Abstract

This work proposes a switched-inductor quasi-z-source inverter-based permanent magnet brushless direct current drive with closed loop controllers. This drive system can be employed in high wattage power electric vehicles as well as any other adjustable drive applications because it makes use of the benefits of both the PMBLDC motor and SL-qZSI. The constant torque to current plus speed to voltage characteristics of the brushless DC (BLDC) motor are distinctive. By changing the voltage applied to the armature, the speed and torque can be adjusted. Closed control of the speed and torque controls can result in the desired level of speed performance. Moreover, SLqZSI has several benefits like high voltage gain, low current stress on inductors, low capacitor voltage stress, and more. As a result, the inverter receives a high boosted dc voltage, which allows for smooth operation and a quick dynamic response from the drive. The switching signals for the inverter switches have been produced using the maximum constant boost control approach. This paper work deals with the open loop and closed loop control of the quasi-z-source inverter-based permanent magnet brushless direct current drive. The closed loop system is implemented with two different controller such as proportional resonant controller and the sliding mode controller. For high power gain, the system is incorporated with the super lift converter circuit. The proposed open loop and closed loop system with two different controllers are implemented in MATLAB Simulink and the results were obtained. The results obtained from both open loop and closed loop systems were compared to give out the effective controller system for the permanent magnet brushless DC motor drives.