Tribute to the great Scientist

Nikola Tesla

Presented By JIBIN JOHN

RANJITH TRSUJITH MK

SUDHEER PCUNNIKRISHNAN A

HIGH EFFICIENCY DC-DC CONVERTER FED FIVE LEVEL

INVERTERProject GuideTG SANISH KUMARAssociate ProfessorEEE Department

We are discussing with,

1.Why High efficiency Inverter system2.Wide input high efficiency high step-up Dc- Dc Converter

o Modes of operation3.Reduced switch 5 level inverter

o Modes of operation4. Integrated inverter system with high efficiency converter

o Simulation diagramo Simulation resulto Analysis

5.Hardware Implementationo Schematic Diagramo Top view of PCBo Hardware Result

6.Conclusion and future scope05/03/2023 3

05/03/2023 4

WHY HIGH EFFICIENCY INVERTER SYSTEM

Energy plays a pivotal role in our life daily activities. Energy demand is increasing day be day due to increase

in population urbanization and industrialization The worlds fossil fuel supply will thus depleted in a few

hundred years Result will be inflation and energy shortage Hence we the engineers have to take the responsibility

to use the renewable source in efficient manner For this Efficient power converts has an important role

WIDE INPUT HIGH EFFICIENY & HIGH STEP-UP

DC-DC CONVERTER

Features Combining boost, fly-back &

charge pump circuits. Wide input range High Voltage gain (2.9 to 10

times) High Efficiency( up to 95%) Low cost Best suitable for renewable

energy sources

05/03/2023 5

MODES OF OPERATION

05/03/2023 6

Mode.1 ( t0 to t1) Mode.2 ( t1 to t2)

Mode.3 ( t2 to t3) Mode.4 ( t3 to t4) Mode.5 ( t4 to t5)

05/03/2023 7

Mode.4 ( t3 to t4)

To reduce the inrush current of the charge pump current loop

WIDE INPUT HIGH EFFICIENCY HIGH STEPUP DC-DC

CONVERTER

SIMULATION DIAGRAM OFWIDE INPUT HIGH EFFICIENCY AND HIGH STEPUP DC-DC

CONVERTER

05/03/2023 8

SIMULATION REULT OFWIDE INPUT HIGH-EFFICIENCY HIGH-STEPUP DC-DC

CONVERTERDuty ratio = 70% Duty ratio = 90%

REDUCED SWITCH 5 LEVEL INVERTER

05/03/2023 10

FEATURES

Sine PWM inverter topology Dual reference modulation

technique One Full bridge inverter and

auxiliary circuit with 4 diodes

and 1 switch Produce +Vdc/2, +Vd, 0V, -Vd/2

and –Vd

Improved Output Waveform Smaller filter size Smaller EMI and THD05/03/2023 11

Modes of operation

S2 S3 S4 S5 S6 Vout

ON OFF OFF OFF ON +Vdc/2

OFF ON OFF OFF ON +Vdc

OFFOFF or (ON)

ON or (OFF)

OFF or (ON)

ON or (OFF)

0

ON OFF OFF ON OFF -Vdc/2

OFF OFF ON ON OFF -Vdc

MODE 21345

05/03/2023 12

Dual Reference Sine PWM Switching

05/03/2023 13

SIMULATION DIAGRAM

05/03/2023 14

SIMULATION RESULTS

Under modulated Switching (Ma<0.5)

Linearly modulated Switching (1<Ma<0.5)

Over modulated Switching (Ma>1.5)

05/03/2023 15

SWITCHING

05/03/2023 16

Without Filter

With L filter

With LC filter

05/03/2023 17

HIGH EFFICIENCY CONVERTER + 5 LEVEL INVERTER

05/03/2023 18

SIMULATION RESULT

05/03/2023 19

THD = 1.346%

ANALYSIS ON SIMULATION RESULTSSwitching Frequency

(Hz)

Duty Ratio

Load Vdc (Avg)

I in (Avg)Input power

V out (Avg)

I out (Avg)Pout

powerVoltage

Gain% µ

R

CONVERTER                  

16000 70%

1000 30 1.39 41.73 173.5 0.17 30.1 5.78 72%

600 30 1.54 45.43 146 0.24 35.55 4.87 78%500 30 1.60 47.81 138.6 0.28 38.36 4.62 80%400 30 1.74 52.17 131.2 0.33 43.04 4.37 82%250 30 2.50 74.74 127.8 0.51 65.31 4.26 87%200 30 3.04 91.18 127.6 0.64 81.42 4.25 89%100 30 5.75 172.7 126.5 1.26 160.1 4.22 93%

INVERTER                  

Hc =20 KHz & Href =

50Hz70%

1000 200 0.10 19.13 104.17 0.10 13.11 0.52 69%

500 200 0.19 37.81 120.8 0.24 25.19 0.60 67%300 200 0.29 57.83 121.4 0.40 42.12 0.61 73%200 200 0.40 79.34 118 0.59 64.54 0.59 81%

CONVERTER + INVERTER              

70%

500 30 1.37 41.05 110.4 0.22 21.05 3.68 51%300 30 1.44 43.07 88.26 0.29 26.23 2.94 61%200 30 1.55 46.41 82.61 0.41 35.62 2.75 77%100 30 2.06 60.65 70.37 0.70 50.44 2.35 83%

WIDE INPUT CHARACTERISTICS ANALYSIS USING SIMULATION

LoadV in I in Pin Vout I out P out V gain % µ

(R)CONVERTER              

200.020.0 3.8 75.6 117.6 0.6 69.2 5.9 92%70.0 13.4 938.4 417.7 2.1 872.3 6.0 93%

100.0 20.0 7.2 144.2 116.9 1.7 136.5 5.8 95%70.0 25.6 1790.0 415.0 4.5 1721.0 5.9 96%

CONVERTER + INVERTER

500.0 20.0 1.0 19.2 80.3 0.2 13.0 4.0 68%70.0 3.4 235.9 284.6 0.6 162.0 4.1 69%

100.0 20.0 2.5 49.9 63.0 0.6 38.6 3.2 77%70.0 8.9 624.0 222.3 2.2 494.3 3.2 79%

HARDWARE IMPLEMENTATION

05/03/2023 22

SCHEMATIC

RESULTS

05/03/2023 23

Gate pulse to

S2

Gate pulse to S3

Gate pulse to S4

Gate pulse to S5

Gate pulse to S6

05/03/2023 24

5 LEVEL OUPUT

Expected wave

CONCLUSION

Circuit Provides minimum THD (1.3% to 4.0% ) High Voltage gain about 2.5 to 10 times by keeping high

efficiency Providing wide input range characteristics The converter circuit recovers leakage inductance energy. The reduced switch multilevel inverter used 3 switches lesser

than conventional topology Switching losses comparatively lesser because of reduced

switches and two switches triggering with standard frequency The switching signals are generated with the help of

microcontroller dsPIC30F2010 Integration of converter with inverter provides high amplified

output with lesser THD and High efficiency about 80% and

above

Reference

1. TOMASZUK_ and A. KRUPA, “ High efficiency high step-up DC/DC converters – a review,” Bulleti of the polish

academy of sciences technical science, Vol. 59, No. 4, 2011

2. W. Yu, C. Hutchens, J.-S. Lai, J. Zhang, G. Lisi, A. Djabbari, G. Smith, and T. Hegarty, “High efficiency converter

with charge pump and coupled inductor for wide input photovoltaic AC module applications”, Energy Conversion

Congress and Exposition (ECCE) IEEE 1, 3895–3900 (2009).

3. S. J. Park, F. S. Kang, M. H. Lee, C. U. Kim, “A New Single-Phase Five-Level PWM Inverter Employing a

Deadbeat Control Scheme,” IEEE Trans. Power Electronics., vol. 18, no. 18, pp. 831-843, May. 2003.

4. Muhammad H. Rashid, Power electronics: Circuits, Devices, and Applications, 3rd ed. Pearson Prentice Hall, 2004,

pp.267.

5. Janyavula Deepthi and Dr S N Saxena, “Study of Variation of THD in a Diode Clamped Multilevel Inverter with

respect to Modulation Index” , 2nd International Conference and workshop on Emerging Trends in Technology

(ICWET) , International Journal of Computer Applications® (IJCA),2011

6. Paterrson Thomas, “Comparative study of three types of inverters basedon the output total harmonic distortion”,

2015, http://scholarsmine.mst.edu/masters_theses

7. Jean Noël Fiorina, “inverters and Harmonics”, Cahier Technique Merlin Gerin n° 159 / p.20, E/CT 159 first issued

september 1993 

05/03/2023 26

Thank you for your attention . . .