Solar power invertor

SOLAR POWER INVERTER

INDIVIDUAL CONTRIBUTION

DESIGNING AND ANALYSIS - BY UMESH SHARMA.

ELECTRICAL WORK - BY SURINDER KUMAR.

MANUFACTURING OF THE MODEL - BY MANHAR.

INTRODUCTION

Solar power system is one of renewable energy system which uses PV modules to convert sunlight into electricity.

The electricity generated can be either stored or used directly.

Solar PV system is very reliable and clean source of electricity that can suit a wide range of applications such as residence , industry ,agriculture etc.

OBJECTIVE

THIS PROJECT PLAYS AN IMPORTANT ROLE IN THE AREA’S WHERE THERE IS ABUNDANT SUNLIGHT AND LARGE RURAL POPULATION WITHOUT PROPER INFRASTRUCTURE.

MAIN COMPONENTS 1.SOLAR PANEL: converts sunlight into Dc

electricity. 2.INVERTER: converts DC to AC for

appliances. 3.BATTERY: stores energy for supplying to

electrical appliances when there is a demand. 4.LOAD (APPLIANCES): TV, LIGHTS etc. 5.CHARGE CONTROLLER.

DESIGN OF INVERTOR

SPECIFICATIONS

“WE ARE CONSUMING A ONE 20 WATT BULB FOR 4 HRS A DAY”

1. POWER CONSUMPTION: Total Appliance used = 20 watt X 4hrs =80 wh/day. Total PV panel energy needed = 80 X 1.3 = 104 wh/day.

CIRCUIT DIAGRAM

COMPONENTS:

Part Total Qty. Description

C1, C2 68 uf, 25V Tantalum CapacitorR1, R2 10 Ohm, 5 Watt ResistorR3, R4 180 Ohm, 1 Watt ResistorD1, D2 HEP 154 Silicon DiodeQ1, Q2 2N3055 NPN Transistor T1 24V, 15A Center Tapped Transformer.

SIZE OF THE PV PANELTotal Wp (peak watt) PV capacity needed 104/2.93 = 35.49 Wp. No of PV Panel needed = 35.49 Wp/10 = 3.5 =4 module. (Panel Generation factor = 2.93)

INVERTER SIZE

Total watt of the appliances = 20 watt.

For safety inverter should be bigger 25-30%.

The inverter size should be about 25watt.

BATTERY SIZING

• Total appliance used = 20 X4 = 80 watt/day.• Nominal battery voltage = 12 volt.• Days of Autonomy = 3 days.• Battery loss= 0.85• Depth of discharge = 0.6 Battery Capacity (Ah)={(total watt-hrs per day used by

appliance) /(0.85 X 0.6 X nominal battery voltage)} X Days of aotonomy.

= {(20 X 4)/(0.85X0.6X12)} X 3 = 39.21 Ah.So battery should be rated 12 v 39.21 Ah for 3 days of autonomy.

LINE DIAGRAM

FEATURES

LIGHT WEIGHT.

EASY TO CARRY.

LOW COST.

COMPACT.

NON POLUTING.

COST OF PROJECT.

SOLAR PANNEL - Rs.1000.

BATTERY - Rs.500 .

ELECTRICAL COMPONENTS – Rs.500.

BODY - Rs.200.

TOTAL = Rs.2200.

TIME LINE1st FEB 2012 TO 1ST MARCH 2012.

1 DESIGNING OF THE INVERTOR

2. SELECTION OF CIRCUIT DIAGRAM.

15TH MARCH TO 15TH APRIL 2012

1. CONSTRUCTION OF THE CIRCUIT.

2. ASSEMBLING ALL THE COMPONENTS .

3. ARRANGEMENT OF THE REQUIRED COMPONENTS.

3. TESTING THE MODEL.

THANK YOU