fuzzy controller based power quality improvement in three ... · 1,2,3 department of electrical and...

Indian Journal of Geo Marine Sciences

Vol. 46 (09), September 2017, pp. 1908-1919

Fuzzy controller based power quality improvement in three level

converter with multiloop interleaved control for marine AC/DC

applications

Gnanavadivel Jothimani,1

Senthil Kumar Natarajan,2 & Yogalakshmi Palanichamy

3

1,2,3 Department of Electrical and Electronics Engineering, Mepco Schlenk Engineering College, Sivakasi, Tamil Nadu 626 005,

India.

1[Email:[email protected], [email protected]]

Received 04 November 2015 ; revised 08 February 2016

This integration of PI controller (voltage) and fuzzy controller (current) in multiloop interleaved control (MIC)

operated three level converter for marine AC/DC applications is proposed. Parameters characterizing the power quality comprise

Total Harmonic Distortion (THD) and input power factor are measured along with steady state and dynamic performance

analysis in single phase three level AC-DC converter which is simulated in MATLAB/Simulink. MIC’s merits are reduction of

compensating block and number of parameter sensing still individual capacitor voltages can be balanced. This system possesses

PI as external twirl voltage controller and internal twirl current controller integrated in MIC where the current controller is now

replaced as FLC. From the simulation results, it is found that FLC current controller with PI voltage controller performs better

with 3.23% of source current THD at rated power and less than 5% for wide load variations and affirms unity power factor

compared to conventional PI controller.

[Keywords: MIC, FLC, PI, Power Factor (PF), Total Harmonic Distortion (THD), three-level boost converter]

Introduction

Single-phase AC-DC converters are very

commonly preferred as front end rectifiers for

marine applications because of its high power

density and increased efficiency. Typical

diode/thyristor rectifiers yield poor power factor

and inject high harmonics into source current thus

pollute the power quality of input ac mains.

Inserting an inductor on the AC supply side to

improve a current waveform but this reduces the

power factor 1-3

. Permissible limits of harmonics

in supply current is prescribed by IEEE 519 and

IEC 1000-3-2 4,5.

, the Power Factor Correction

(PFC) is given more attention nowadays due to

the evolution and tremendous usage of power-

electronic products. Boost type converters are

chiefly employed in power factor correction as it

works with continuous source current and the

magnitude of dc voltage is surely larger than

source voltage’s maximum value 6. The term

multiloop refers to outer voltage loop comprising

of PI controller and an inner current loop where

PI and fuzzy controllers are employed. The

regulated dc output voltage and boost inductor

current are sensed; both the signals are applied to

the corresponding loops, got processed by

controllers and produce desired gating pulses to

the converter to ensure proper function 7-10

.

In 11

and 12

, extra compensation blocks are

integrated in multiloop control for motor

applications enhance power quality at supply side.

Power switch of single component has to bear the

whole regulated dc output at the time of blocking

period of MOSFET. When employed in high

power applications, power devices are subjected

to severe voltage stress. Usage of multilevel

converters is the best solution for the above

mentioned problems when operated in high

power/voltage applications. Classical three-level

converter comprises eight power switches which

is the major limitation of the topology. Hence,

three level AC-DC converter with two power

semiconductor switches is presented in this paper.

In high power applications, single level

boost converter needs bulk inductance, and

provides high current distortion. In order to

reduce bulk inductance, to reduce the

electromagnetic interference (EMI), multilevel

converters comprising low potential pressure

INDIAN J. MAR. SCI., VOL. 46, NO. 09, SEPTEMBER 2017

devices are found to be suitable in high voltage

working environment 13

. Capacitors are cascaded

to the switches for production of three levels of

output voltage in multilevel boost topology. Thus,

voltage stress to each switch is reduced to half the

amount as compared to boost converter.

Therefore, lesser current ripples in boost three-

level rectifier in comparison to classical boost

converter. DC/DC conversion 14-18

involved in

fuel cell applications 16,17

and grid-integrated

applications 15, 19-20

are the areas where three level

converters are chiefly employed.

Power switches able to withstand high

voltage stress possess larger drain-source

resistances. Lesser ripple current, low switching

stress and low switching loss 6, 15, and 20

are the

merits of three-level converter. DC-DC three-

level converter 21-24, 25-26

integrated with bridge

rectifier forms three-level AC-DC converter.

Gating pulses to three-level SMR (ac/dc

application) 22–24

are generated using lookup table.

Individual capacitor voltage sensing and extra

voltage compensation sub-blocks must be

included for proper functioning of multilevel

converter in dc/dc applications 17-18, 20-21, 27

.

The nominal characteristic of AC - DC

multilevel converter with interleaved PWM

control is derived. The result of interleaved PWM

three level AC- DC rectifier behaves similar to

conventional AC-DC boost converter even when

the two dc-link capacitor voltages are imbalanced 26

. Interleaved PWM control signals obtained

from multiloop control doesn’t require region

selector 27-28

and supplementary compensation

blocks. Also, less volume of inductance is used in

multilevel boost configuration circuit 29

. Hence,

MIC is more feasible than the typical control

method 26, 30

. PI voltage and PI current control

technique adopted in 26

, claimed to have achieved

4.43% THD in source current and 0.994 input

power factor. Recently, Fuzzy intelligent

controller is implemented for control signals

generation. In 31-38

, FLC is used in DC-DC

converter and also used in two level AC-DC

converter.

In this paper, fuzzy logic current control

is proposed in multiloop interleaved control

without feed forward loop for the single-phase

boost type AC-DC three-level rectifier for marine

applications. The incorporation of attaining

source side low THD and unity PF with the help

of PI (voltage) – PI (current); PI (voltage) – Fuzzy

(current) control strategies are implemented. The

results obtained for FLC based current supervisor

are correlated with the results obtained for

classical PI current supervisor. The novel PI-

fuzzy combination integrated with multilevel

boost topology finds its applications in marine

areas like front stage for battery charger, UPS,

and three-level inverter related applications. This

manuscript suggested improved fuzzy logic

current controller with PI voltage control method.

In this work, source current Total Harmonic

Distortion of 3.23% was achieved and also power

factor closer to unity which is better than that

reported in literature 26

. Also the supply current

THD attained is within the IEEE-519

specifications.

Materials and Methods

Figure 1 presents the dual boost type

converter circuit for marine applications. An

inductor Lb is used to reduce current ripple. Four

possible modes of operation exist in

correspondance to the ON/OFF positions of two

power MOSFETs (S1,S2).

Fig. 1. Circuit configuration of dual boost type converter for

marine applications

The capacitor voltage and inductor current

equations during ON state of both the MOSFETs

(S1,S2) are

L

s b

div L

dt (i)

01

1

vdvC

dt R (ii)

02

2

vdvC

dt R (iii)

Similarly during S1-ON & S2-OFF

0

2

L

b s

vdiL v

dt (iv)

01

1

vdvC

dt R (v)

1909

GNANAVADIVEL et al.: FUZZY CONTROLLER BASED THREE LEVEL CONVERTER WITH MIC

02

2

L

vdvC i

dt R (vi)

Correspondingly for the condition during S1-OFF

& S2-ON

0

2

L

b s

vdiL v

dt (vii)

01

1

L

vdvC i

dt R (viii)

02

2

vdvC

dt R (ix)

Finally, during both MOSFETs (S1,S2) in OFF

state

0

L

b s

diL v v

dt (x)

01

1

L

vdvC i

dt R (xi)

02

2

L

vdvC i

dt R (xii)

The derived transfer function for three level

converter is given by,

(1)

Design Equations

Boost Inductor,

where, - regulated dc voltage

- boost inductor ripple current

- MOSFETs (S1, S2) frequency

DC Link Capacitor,

where, - capacitor ripple voltage

- angular frequency (input voltage)

- output dc current dc current

Applying the values of Table 1 to the equation

(1), we get

~3

~ 5 2 3

32.16 11.1 10

2.1 10 0.13 10 0.4489

ov s s

s sd s

(2)

Table 1. Design specifications and circuit parameters

S.No Parameter Specification

1 Input line voltage (Vs) 28 V

2 Output voltage 48 V

3 Output power 100 W

4 Switching frequency (fs) 10 kHz

5 Duty cycle (D) 0.33

6 Line frequency 50 Hz

7 Boost inductor (Lb) 3 mH

8 Capacitance C1=C2 7000 µF

9 Load resistance 23 Ω

Figure 2 shows the multi loop interleaved control

(MIC) block of the boost type three level AC-DC converter for marine applications. It comprises of

phase locked loop, conventional multi loop

control with voltage controller and current

controller, feed forward loop and interleaved

PWM scheme. Output voltage is sensed and

compared with actual reference in order to

produce error voltage which is then processed by

voltage controller.

Fig. 2. Block diagram of multiloop interleaved control

(MIC)

|sin ωt| is obtained with the help of phase

locked loop. Reference current is generated with

the help of |sin ωt| amplified with control signal

output from voltage controller. Error current is

then obtained from the comparison of boost

inductance current to actual inductor current. The

current controller output accompanied with the

feed forward term produces a control signal Vc.

This signal Vc is applied to two ramp signals to

produce gating pulses to three level converter.

Gating pulses of same amplitude are given a

phase shift of 1800.

1910


The multiloop interleaved control can be

reduced with the exclusion of feed forward loop.

This reduced multiloop interleaved control is

accompanied with fuzzy logic current controller

provides the same tracking performance without

the necessity of feed forward loop. The proposed

control circuit is shown in Figure.3. The PI

controller minimizes the error value at most to

zero. Rise time got reduced by tuning

proportional gain (Kp) and steady state error got

vanished by tuning integral gain (Ki) helps three

level converter to produce desired output.

Fig. 3. Proposed block diagram of control circuit

Error in output voltage after got

processed by the PI controller provides the

maximum value of supply current. 0.3 and 3.4 are

the corresponding values of Kp and Ki

respectively. With these gain constants, PI

controller regulate the output voltage to

predefined set value.

Deviating nature of the three level converter while

put into operation under time varying conditions

can be handled by the intelligent FLC. Here, FLC

is chosen as current controller. FLC is fed with

inductor error current. Design of fuzzy logic

controller is illustrated in Figure 3a, 3b and 3c.

The very liable mamdani fis structure is

employed.

Fig. 3a. Membership functions for the input 1 (error current)

Fig. 3b. Membership functions for the input 2 (derivative

error current)

Fig. 3c . Membership functions for the output (control signal)

Table 2 depicts the rules formed

for proper operation of FLC. Error current and

derivative error current are the input variables;

controlled output signal is the output variable

involved in FLC design.

Table 2. Fuzzy Control Rules

CE

E

NB NM NS ZE PS PM PB

NB ZE PS PM PB PB PB PB

NM NS ZE PS PM PB PB PB

NS NM NS ZE PS PM PB PB

ZE NB NM NS ZE PS PM PB

PS NB NB NM NS ZE PS PM

PM NB NB NB NM NS ZE PS

PB NB NB NB NB NM NS ZE

NB- NegativeBig, NM-Negative Medium,

NS-Negative Small, Z-Zero, PS-Positive Small,

PM- Positive Medium, PB-Positive Big.

1911


Fig. 4a. Simulated circuit diagram of three level AC-DC

converter with MIC control for marine applications

Figure 4a presents the simulink model of

three level boost type AC-DC converter

integrated with multiloop interleaved control for

marine applications. Simulation was executed in

MATLAB. Here, PI (voltage)-Fuzzy (current)

controller combination is implemented for

regulating dc voltage and shaping of supply

current in three level boost type switched mode

rectifier. By implementing this controllers

combination, the desired power factor correction

(i.e.) unity power factor, lesser THD in source

current can be achieved in addition to the output

voltage regulation. And the feed forward loop can

be eliminated by implementing fuzzy logic

current control. Thus the desired power factor

correction can be achieved by using multiloop

interleaved control with the reduction in feed

forward loop.

Fig. 4b. Simulated circuit diagram of three level AC-DC

converter with PI voltage controller and PI current controller

Fig. 4c. Simulated circuit diagram of three level AC-DC

converter with PI voltage controller and fuzzy current

controller

Figure 4b shows the simulink model

representing three level AC-DC converter with

PI-PI (voltage-current) control. The PI controller

with MIC control loop implemented in

MATLAB/SIMULINK takes care of the steady

state error caused in the system. The output

voltage is regulated and THD value obtained is

4.16%. Figure 4c shows simulink model

representing three level AC-DC converter with

PI-Fuzzy (voltage-current) control.

Results and Discussions

Figure 5a shows the supply side

voltage/current signals for proportional integral

control. Zero phase shift is maintained by both

voltage & current signals providing unity power

factor. The output voltage is regulated at 48V.

Figure 5b shows the FFT analysis of

source current using PI-PI (voltage-current)

controller at nominal load. From the FFT analysis,

source current distortion obtained is 4.16% which

is within the IEEE standard value of less than 5%.

Table 3 indicates the behaviour of three level

boost type AC-DC converter under load

variations. At rated load condition, THD of

supply current is 4.16%. The input power factor

becomes 0.9991 (i.e.) nearly unity. By increasing

the load resistance, source current harmonics also

increases and output voltage is maintained

constant.

1912


Fig. 5a. Input voltage and input current waveforms for PI

voltage controller and PI current controller

Fig. 5b. FFT analysis for PI voltage controller and PI current

controller Table 3. Performance analysis of three level converter for PI

voltage controller and PI current controller

Percentag

e

of Load

(%)

Output

Voltag

e (V)

Source

Curren

t THD

(%)

Input

Power

Facto

r

Efficienc

y (%)

100 48 4.16 0.9991 90.56

75 48 4.28 0.9991 90.55

50 48 5.56 0.9985 91.07

25 48 9.46 0.9955 89.91

Figure 5c shows the supply side voltage/current

signals for PI-Fuzzy (voltage-current) controller

combination. Zero phase shift is maintained by

both voltage & current signals providing unity

power factor. Source current waveform is almost

sinusoidal with very less distortions of 3.23%

THD.

Figure 5d shows the FFT analysis of

source current with PI-fuzzy combination.

Constant output voltage is obtained during wide

load variations with THD less than 5% and PF

approaches to unity.

Fig. 5c. Input voltage and input current waveforms for PI

voltage controller and fuzzy current controller

Fig. 5d. FFT analysis for PI voltage controller and fuzzy

current controller

Table 4 shows the behaviour of three

level boost type AC-DC converter under load

variations for PI-fuzzy controller combination. If

the load power is varied from 100 W to 25 W, the

output voltage is maintained at 48V. THD lies in

the range from 2% to 3% wchich satisfy IEEE-

516 specifications.Power factor of the circuit is

almost unity.The efficiency of the converter is

around 90%.

Table 4. Performance analysis of three level converter for PI

voltage controller and fuzzy current controller

Boost type three level AC-DC converter

integrated MIC is illustrated above. From figure

5e and 5f, it is identified that regulated output

voltage and balanced capacitor voltages are

Percentage

of Load

(%)

Output

Voltage

(V)

Source

Current

THD

(%)

Input

Power

Factor

Efficiency

(%)

100 48 3.23 0.9998 90.65

75 48 2.65 0.9997 90.49

50 48 2.37 0.9996 89.93

25 48 3.10 0.9993 89.89

Input Voltage Input Current

1913


obtained even for unsymmetrical capacitances.

Source current THD obtained are same as for

obtained with the capacitance matched condition.

Figure 5g and 5h pictures out that regulated

output voltage and balanced capacitor voltages

are obtained during instant toggling of load power

from 25 W to rated load (100 W). The THD value

obtained is reduced value of 2.86% while using

FLC which is much better result compared to

9.16% obtained when using PI as current

controller. Stability analysis of boost type three

level converter is done by varying source side

voltage (28 V to 36 V) and the waveforms are

checked out as shown in figure 5i and 5j. Here

also output voltage is well regulated with

balanced capacitor voltages. The THD value

obtained is reduced value of 2.74% while using

FLC which is better result compared to 3.65%

obtained when using PI as current controller.

(Fig. 5e)

(Fig.5f)

Figure 5e: Simulated results for three level converter at 100 W under capacitance mis-matched condition C1 = 7360µF and C2 =

6530 µF with PI voltage controller and PI current controller. Figure 5f: Simulated results for three level converter at 100 W

under capacitance mis-matched condition C1 = 7360µF and C2 = 6530 µF with PI voltage controller and fuzzy current controller.

1914


(Fig.5g)

(Fig.5h)

Figure 5g: Simulated results for three level converter during load change from 25 W to 100 W at t = 4s with PI voltage controller

and PI current controller. Figure 5h: Simulated results for three level converter during load change from 25 W to 100 W at t =

1.6s with PI voltage controller and fuzzy current controller.

1915


(Fig.5i)

(Fig.5j)

Figure 5i: Simulated results for three level converter during supply variations from 28 V to 36 V at t = 0.8s with PI voltage

controller and PI current controller. Figure 5j: Simulated results for three level converter during supply variations from 28 V to

36 V at t = 0.9s with PI voltage controller and fuzzy current controller.

1916


Fig. 6a. Simulation result with comparison of THD value

Fig. 6b. Simulation result with comparison of power factor

value

Figure 6a represents the comparison

curve showing the variations of supply current

THD using both conventional PI and FLC current

controllers. The proposed FLC operated boost

type three level converter ensures optimal results.

For nominal load, the THD obtained is 3.23%

which follows IEEE-516 specifications. .

Figure 6b represents the comparison

curve showing the variations of input power

factor using both conventional PI and FLC current

controllers. The proposed FLC operated boost

type three level converter ensures optimal results.

For nominal load, the input PF obtained is 0.999

which is nearer to unity.

Conclusion

The paper deals with the design and

modeling of fuzzy current controller in multiloop

interleaved control for single phase three level

boost type AC-DC converter in

MATLAB/Simulink. Main benefit of three level

converter is the ability to generate high voltage

with reduced voltage stress on the switches.

Fuzzy logic controller as current controller

instead of conventional PI controller integrated in

multiloop interleaved control method reduces the

THD value to 3.23% without adding any filter on

supply side and power factor to be unity and also

fuzzy current controller eliminates the necessity

of feed forward loop in multiloop interleaved

control for marine applications. Analysis for

sudden disturbances in load as well as source side

for three level converter are checked and verified

that fuzzy logic current controller produces better

power quality enhancement. THD of source

current have been limited within IEEE 519

standard limit for wide variations of load with

power factor near to unity.

Acknowledgement

Authors are grateful to

Dr.S.Arivazhagan, Principal, Mepco Schlenk

Engineering College, Sivakasi for providing

facilities and encouragement to carry out the

above research work.

References

1. Jovanovic, M.M., and Crow D.E., Merits and

limitations of full bridge rectifier with LC filter in

Meeting IEC1000-3-2 Harmonic Limit

Specifications. IEEE Trans. Ind. Applicat.,

33(1997) 551–557.

2. Redl R., An economical single-phase passive

power-factor corrected rectifier: Topology,

operation, extensions, and design for compliance. (

Proc. IEEE Appl. Power Electron. Conf. (APEC)

1998, pp.454–460.

3. Prasad, A.R., Ziogas, P.D., and Manias, S., A novel

passive waveshaping method for single phase

diode rectifiers. IEEE Trans. Ind. Electron.,

37(1990) 521–530.

4. IEEE 519 Recommended practices and

requirements for harmonic control in electrical

power systems. Tech. Rep., IEEE Indus.

Applications Soc./Power Engineering Soc., 1993.

5. Singh, B., Singh, B.N., Chandra, A., Al-Haddad,

K., Pandey, A., and Kothari D.P., A Review of

Single-Phase Improved Power Quality AC-DC

Converters. IEEE Trans. on Industrial Electronics,

50(2003) 962-981.

6. Crebier, J.C., Revol, B., and Ferrieux, J.P., Boost-

Chopper-Derived PFC Rectifiers: Interest and

Reality. IEEE Trans. on Industrial Electronics,

52(2005) 36-45.

7. Shobana, P., Geetha, N., and Gnanavadivel, J.,

Enhancement of power quality of AC-DC Boost

converter with HCC and FLC-A comparative

study. (ICCEET ) 2012 pp.254-258.

8. El Aroudi, A., Orabi, M., Haroun, R., Martinez-

Salamero, L., Asymptotic Slow-Scale tability

Boundary of PFC AC–DC Power Converters:

Theoretical Prediction and Experimental

Validation. IEEE Tran. Industrial Electronics,

58(2011) 3448-3460.

9. Chen, M., and Sun, J., Feedforward Current

Control of Boost Single- Phase PFC Converters.

IEEE Trans. Power Electronics, 21(2006) 338-345.

10. Chen, H.C., Li, H.Y., and Yang, R.S., Phase

Feedforward Control of Single-Phase PFC Boost-

Type SMR. IEEE Trans. Power Electronics,

24(2009) 1428-1432.

1917


11. Gnanavadivel, J., Santhiya, R., Senthil Kumar, N.,

Comparison of closed loop PF improvement

controllers for single phase AC-DC dual output

converter. (Int. Conf. recent advancements in

electrical, electronics and control engineering)

2011 pp. 242-247.

12. Chai, J.Y., Ho, Y.H., Chang, Y.C., and Liaw,

C.M., On Acoustic-Noise- Reduction Control

Using Random Switching Technique for Switch-

mode Rectifiers in PMSM Drive. IEEE Trans.

Industrial Electronics, 55(2008) 2576-2584.

13. Gnanavadivel, J., Senthil Kumar, N., and Jaya

Christa, ST., Implementation of FPGA based fuzzy

and hysteresis controllers for power quality

improvement in single phase three-level rectifier.

Opto. electro and Advanced Materials-Rapid

Comm, (2015) 1264-1272.

14. Yang, L.S., Liang, T.J., Lee, H.C., and Chen, J.F.,

Novel High Step-Up DC–DC Converter With

Coupled-Inductor and Voltage-Doubler Circuits.

IEEE Trans. on Industrial Electronics, 58(2011)

4196-4206.

15. Li, W., and He, X., Review of Nonisolated High-

Step-Up DC/DC Converters in Photovoltaic Grid-

Connected Applications. IEEE Trans. on Industrial

Electronics, 58(2011) 1239-1250.

16. Shahin, A., Hinaje, M., Martin, J.P., Pierfederici S.,

Rael S. andDavat B., High Voltage Ratio DC-DC

Converter for Fuel-Cell Applications. IEEE Trans.

on Industrial Electronics, 57(2010) 3944-3955.

17. Ribeiro, E., Cardoso, A.J.M., and Boccaletti, C.,

Fault-Tolerant Strategy for a Photovoltaic DC-DC

Converter. IEEE Trans. on Power Electronics,

28(2013) 3008-3018.

18. Todorovic, M.H., Palma, L., and Enjeti, P.N.,

Design of a Wide Input Range DC–DC onverter

With a Robust Power Control Scheme Suitable for

Fuel Cell Power Conversion. IEEE Trans. on

Industrial Electronics, 55(2008) 1247-1255.

19. Kwon, J.M., Kwon, B.H. and Nam, K.H., Three-

Phase Photovoltaic System with Three-Level

Boosting MPPT Control. IEEE Trans. on Power

Electronics, 23(2008) 2319-2327.

20. Yaramasu, V., and Wu, B., Three-Level Boost

Converter Based Medium Voltage Megawatt

PMSG Wind Energy Conversion Systems. Energy

Conversion Congress and Exposition (ECCE),

(2011) 561–567.

21. Greul, R., Round, S.D., and Kolar, J.W., The

Delta-Rectifier: Analysis, Control and Operation.

IEEE Trans. on Power Electronics, 21(2006) 1637-

1648.

22. Lin, B.R., and Lu, H.H., Single-Phase Power-

Factor Correction AC/DC Converters with Three

PWM Control Schemes. IEEE Trans. on

Aerospace and Electronic Systems, 36(2000) 189-

200.

23. Lin, B.R., and Lu, H.H., A Novel PWM Scheme

for Single-Phase Three-Level Power-Factor-

Correction Circuit. IEEE Trans. on Industrial

Electronics, 47(200) 245-252.

24. Wu, H., and He, X., Single Phase Three-Level

Power Factor Correction Circuit with Passive

Lossless Snubber. IEEE Trans. Power Electronics,

17(2002) 946-953.

25. Rajesh, M., and Singh, B., Analysis, design and

control of single phase three level power factor

correction rectifier fed switched reluctance motor

drive. IET power Electronics,7(2014) 1499-1508.

26. Chen, H.C., and Jhen-Yu Liao., Multiloop

Interleaved Control for Three-Level Switch-Mode

Rectifier in AC/DC Applications. IEEE

Transactions on Industrial Electronics, 61(2014)

3210 - 3219.

27. Chen, H.C., and Lin, W.J., MPPT and voltage

balancing control with sensing only inductor

current for PV-fed three-level boost-type

converters. IEEE Trans. Power Electron., 29(2014)

29–35.

28. Tsai, J.R., Wu, T. F., Wu, C. Y., and Lee, M. C.,

Interleaving Phase shifters for Critical-Mode Boost

PFC. IEEE Trans. on Power Electronics, 23(2008)

1348-1357.

29. Kong, P., Wang, S., Lee, F. C., and Wang, C.,

Common-Mode EMI Study and Reduction

Technique for the Interleaved Multichannel PFC

Converter. IEEE Trans. on Power Electronics,

23(2008) 2576-2584.

30. Xu, X., Liu, W., and Huang, A. Q., Two-Phase

Interleaved Critical Mode PFC Boost Converter

With Closed Loop Interleaving Strategy. IEEE

Trans. on Power Electronics, 24(2009) 3003-3013.

31. Kessal, A., Rahmani, L., Mostefai, M., Gaubert, J.,

Power factor correction based on fuzzy logic

controller with fixed switching frequency.

Electronics and Electrical Engineering – Kaunes:

Technologija, 2(2012) 67-72.

32. Senthil Kumar, N., Sadasivam, V., Asan Sukriya,

H. M., A Comparative Study of PI, Fuzzy, and

ANN Controllers for Chopper-fed DC Drive with

Embedded Systems Approach. Electric Power

Components and Systems, 36(2008) 680-695.

33. Balestroni, A., Landi, A., and Sani, L., CUK

converter global control via fuzzy logic and scaling

factors. IEEE Trans. Ind. Applicaions, 38(2002)

406–413.

34. Sousa, G. C. D., Bose, B. K., Fuzzy logic based

online efficiency optimization control of an indirect

vector controlled induction motor drive.

(IEEEIIECON Conf. Proc) 1993 pp. 1168-1 174.

35. Gomathy, V., Selvaperumal, S., Fault Detection

and Classification with Optimization Techniques

for a Three-Phase Single-Inverter Circuit. Journal

of Power Electronics, 16, no. 3 (2016) 1097-1109.

36. Selvaperumal, S., Pugazhenthi, P. Nedumal,

Amudha, A., Closed loop performance

investigation of various controllers based chopper

fed DC drive in marine applications. Indian

Journal of Geo-Marine Sciences (IJMS), 46(2017)

1044-1051.

37. Selvaperumal, S., Vijayarajan, S., Pugazhenthi, P.

Nedumal, Prabhakar, G., Nagarajan, R.,

Performance Investigation of Genetic Algorithm

Based LCL Resonant Converter in Marine

Applications. Indian Journal of Geo-Marine

Sciences (IJMS), 45(2016) 1377-1388.

1918

http://nopr.niscair.res.in/browse?type=author&value=Pugazhenthi%2C+P.+Nedumal

http://nopr.niscair.res.in/handle/123456789/3



http://nopr.niscair.res.in/browse?type=author&value=Vijayarajan%2C+S.




http://nopr.niscair.res.in/browse?type=author&value=Prabhakar%2C+G.




38. Rajmohan, Rajalaksmi., Vairamani,

Dr.Rajasekaran., Selvaperumal, Dr.S., Reactive

power compensation and harmonic mitigation

through quasi Z source converter for marine

applications. Indian Journal of Geo-Marine

Sciences (IJMS), 45(2016) 897-910.

1919












fuzzy controller based power quality improvement in three ... · 1,2,3 department of electrical and...

Documents