23-07-2012, 10:05 AM
DESIGN AND DEVELOPMENT OF 300 WATT INVERTER
DESIGN AND DEVELOPMENT OF 300 WATT INVERTER.ppt (Size: 810 KB / Downloads: 142)
INTRODUCTION
This project emphasizes towards providing efficient and simple method of Designing an inverter of 300WATT capacity.
In full bridge inverter circuit, an AC output is synthesized from a DC input by closing and opening the switches in appropriate sequence or switching scheme.
INVERTER
A device that converts DC power into AC power at desired output voltage and frequency is called an Inverter.
DESIGN PARAMETERS
A 12 V car battery can be used as the DC source.
Use the POT R1 to set the output frequency to50Hz.
The transformer used is a 12-0-12 V , 10A step up transformer . Here the 12-0-12 V winding will be the primary and 220V winding will be the secondary.
Use a 10 A fuse in series with the battery as shown in circuit.
The maximum allowed output power of an inverter depends on two factors. The maximum current rating of the transformer primary and the current rating of the driving transistors.
For example ,to get a 300 Watt output using 12 V car battery the primary current will be ~10A because . So the primary of transformer must be rated above 10A.
Also here ,each final driver transistors must be rated above 4A. Here two will be conducting parallel in each half cycle.
COMPONENTS USED
RESISTORS
22Kῼ,1.5Kῼ,300ῼ, 2.7Kῼ,100Kῼ
IC’S 555 TIMER
CAPACITORS
0.047UF,220UF,10000UF/16V,0.1UF/100V
DIODES
Zener diode(8v)
TRANSISTORS
C945, TIP32,D1047
CAR BATTERY OF 8-9AH
COST ANALYSIS
RESISTORS 32 Rs
CAPACITORS 78 Rs
555 TIMER IC 28 Rs
ZENER DIODE 12 Rs
TRANSISTORS 148 Rs
CAR BATTERY 1146 Rs
MISSELANEOUS 200 Rs
TOTAL 1616 Rs
CONCLUSION
The designing inverter circuit for 300WATT capacity using minimum number of components.
Here we use 555 IC for generating the 50 Hz pulses and transistors for driving the load.
The 220V AC will be available at the secondary of the transformer.
The circuit works great for small loads like a few bulbs or fans.
REFERENCE LINKS
[1] J. Rodriguez, J. S. Lai, and F. Z. Peng, “Multilevel inverters: A survey of topologies, controls, and applications,” IEEE Trans. Ind. Electron., vol. 49, no. 4, Aug 2002, pp. 724–738.
[2] N. A. Rahim and J. Selvaraj, “Multi-string five-level inverter with novel PWM control scheme for PV application,” IEEE Trans. Ind.Electron.,vol. 57, no. 6, Jun 2010, pp. 2111–2121.
[3] G. Ceglia, V. Guzman, C. Sanchez, F. Ibanez, J. Walter, and M. I. Gimanez, “A new simplified multilevel inverter topology for DC–AC conversion,” IEEE Trans. Power Electron., vol. 21, no. 5, Sep. 2006, pp. 1311–1319.
[4] M. Calais and V. G. Agelidis, “Multilevel converters for single-phase grid connected photovoltaic systems—An overview,” in Proc. IEEE Int. Symp.Ind. Electron., 1998, vol. 1, pp. 224–229.
[5] V. G. Agelidis, D. M. Baker, W. B. Lawrance, and C. V. Nayar, “A multilevel PWMinverter topology for photovoltaic applications,” in Proc. IEEE ISIE, Guimäes, Portugal, 1997, pp. 589–594.