Analysis of PFC Cuk and PFC Sepic Converter Based Intelligent Controller Fed BLDC Motor Drive Best Electrical Engineering Projects

ABSTRACT

This paper deals with a highly reliable electrical drive utilizing the Brushless DC Motor (BLDC). The motor is fed by Voltage source Inverter (VSI) with a dc-dc converter power factor correction circuit (PFC) as the VSI’s predecessor. The Performance of two dc-dc converters (cuk and sepic as PFC) are analyzed and the results are discussed to arrive at the best suited converter. Fuzzy Logic Controller is used as the Intelligent Controller for the BLDC motor. Reliable, low cost arrangement is thus provided to achieve unity power factor and speed regulation with accuracy. The drive has been simulated using the MATLAB/Simulink environment and the performance has been studied. 

KEYWORDS:

  1. Brushless DC Motor (BLDC)
  2. Power Quality (PQ)
  3. Power factor correction (PFC)
  4. Cuk converter
  5. Sepic converter
  6. Fuzzy logic controller (FLC).

SOFTWARE: MATLAB/SIMULINK 

BLOCK  DIAGRAM:

 Block diagram

PFC Cuk PFC Sepic converter Fed BLDC Motor

Fig. 1. Block diagram

SIMULINK MODEL DIAGRAMS:

PFC cuk fed BLDC

PFC Cuk PFC Sepic converter Fed BLDC Motor

Fig. 2. PFC cuk fed BLDC

 PFC Sepic fed BLDC

Fig. 3. PFC Sepic fed BLDC

EXPECTED SIMULATION RESULTS:

 Input power factor

PFC Cuk PFC Sepic converter Fed BLDC Motor

 

Fig. 4. Input power factor

Cuk Converter Efficiency

PFC Cuk PFC Sepic converter Fed BLDC Motor

Fig. 5. Cuk Converter Efficiency

Motor Speed

PFC Cuk PFC Sepic converter Fed BLDC Motor

Fig. 6. Motor Speed

Input power factor

Fig. 7. Input power factor

Sepic Converter Efficiency

PFC Cuk PFC Sepic converter Fed BLDC Motor

Fig. 8. Sepic Converter Efficiency

Motor Speed

PFC Cuk PFC Sepic converter Fed BLDC Motor

Fig. 9. Motor Speed

CONCLUSION

The power factor correction has been successfully implemented using the cuk and sepic converter. It shows a much improved result as it not only provides better power quality, but also the converter removes the necessity to smooth out the dc output from ripples. The fuzzy logic controller widely increases application range of the motor by increasing the reliability. The motor is presently used in areas such as aerospace, aircraft and mining applications because of the enhanced reliability that the motor offers. This is further enhanced by the usage of FLC and the PFC converters. The FLC is used to control the motor speed and the cuk or sepic converter is used for the power factor improvement. It is found that the sepic converter is found to provide better power quality. The Analysis has been done for Continuous conduction in the sepic and cuk converters as both are not capable of self PFC.

REFERENCES

  1.  Shanmugasundram, K. Muhammad Zakariah and N. Yadaiah, “Implementation and Performance Analysis of Digital Controllers for Brushless DC Motor Drives,” IEEE/ASME Trans. Mechatronics, vol. 19, no. 1, Feb. 2014.
  2. Kenjo and S. Nagamori, Permanent Magnet Brushless DC Motors.Oxford, U.K.: Clarendon Press, 1985.
  3. Sanjeev Singh and Bhim Singh, “A Voltage-Controlled PFC Cuk Converter-Based PMBLDCM Drive for Air-Conditioners,” IEEE Trans. Ind. Appl. 48, no. 2, Mar. /Apr. 2012.
  4. Vashist Bist and Bhim Singh, “PFC CUK Converter-Fed BLDC Motor Drive,” IEEE Trans. Power Electron., vol. 30, no 2, Feb. 2015.
  5. “Limits for harmonic current emissions (equipment input current16 A per phase),” International Standard IEC 61000-3-2, 2000

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