DEEPAK PURE SINE WAVE INVERTER PRESENETATION

A VEIRY PRESEBTATIION ON URE WINSE SAVE INVERTER

1. PRESENTATION ON PURE SINE WAVE INVERTER Submitted in the partial fulfillment of the requirement for the award of the degree of Bachelor of Technology Batch : 2020-2024 Submitted To: Submitted By: Mr. Pardeep Rana DEEPAK H.O.D. (EE) REG NO : 2013171364 SAT KABIR INSTITUTE OF TECHNOLOGY AND MANAGEMENT

2. INTRODUCTION PURE SINE WAVE INVERTER First off, what is an inverter? An inverter is a device that converts DC or Direct Current power (the type of electricity stored in batteries) into AC or Alternating Current power (the type of power we use at home). With an inverter, the power stored in a 12 volt battery such as the kind used in a car/truck/RV or a battery power pack can then be used to run devices and appliances that would normally only operate while plugged into a wall outlet in your home or business.  With a battery and inverter combination such as the Humless Sentinel you have the ability to operate tools and other equipment away from a wall outlet. There also different types of inverters available on the market and that’s why the pure sine wave needs to be explained. Depending on how an inverter converts power from DC to AC the resulting electricity can vary between a simple andrough  ‘square’ wave on one end, to a finer and smooth sine wave on the other.

3. Pure Sine Wave Inverter Circuit Diagram

4. 850VA Pure Sinewave Home UPS Inverter with Digital Display, Its a Great Value for Money. Sizing - Suitable for PC, LCD, LED TV, FAN, Light, Kitchen Mixer, RO water Purifier,etc . (Specification (a)Mains AC Lower Voltage Limit : 100V+/- 5V in Inverter Mode / 180V+/- 5V in UPS Mode (b)Mains AC Higher Voltage Limit : 280V+/- 10V in Inverter Mode/ 260V+/- 5V in UPS Mode (c)Output Voltage at No Load : 220V +/-7V AC (d)Output Wave Form at No Load : Pure Sine Wave (e)Home UPS Output Frequency : 50+/-1.0Hz (f)Nominal Battery Voltage : 12V (g)Low Battery Cut Off : 10.5+/- 0.2 V (h)Change over time Mains to UPS and vice versa : < 10 msec (at mains low and High cut) INVERTER DESCRIPTION

5. Pure Sine Wave Output  - Eliminates humming and heat generated when powering on tube-lights and fans. LED Indications & Audio Alarms  - Provides easy-to-read status of your power conditions, Home UPS and battery. Home/Away Switch  - Keeps your battery charged when you are away, and prevents needless discharges. Intelligent Battery Charging  - Microprocessor controlled, 3 stage regulated charging ensures fastest recharging without decreasing battery life. Wide Input Voltage Window  - Saves your battery power when you really need it, during power cuts! UPS/Inverter Switch  - Lets you to power your computer systems as well as lights, fans and televisions. Charger Selector  - User selectable battery charger helps prevent under and over charging, extends battery life. Advanced Safety Features  - Safeguards your Home-UPS and battery. Push-Button Circuit Breaker  - Provides easy recovery from a overload condition while on mains mode. Generator Compatibility  - Allows you to recharge your battery while you are on generator mode. FEATURES

6. DIFFERENCE BETWEEN 600VA AND 850VA INVERTER This is one of the question frequently asked by readers of this blog. Normally people who decide to buy 600 VA inverter gets easily confused to choose between this two VA ranges. Though 850 VA inverters has many advantages like compatibility with high power Kitchen mixers and ½ hp water pumps, 600 VA inverter is also has its own advantages and some valid reasons to consider. If you are going to use inverter for just powering up your laptop + 2 ceiling fans + 1tubelight, then a 600 VA inverter is enough for you. It is unnecessary to invest your money in 850 VA inverter , which you are not going to utilize 100%.

7. Sine Wave Inverter allows the use of 230V electrical appliances from a car battery or a solar battery. This circuit ca n obtain power both solar as well as AC. When the solar is ON the battery charger circuit (diode 5148) is in forward biased when battery get fully charged the circuit will becomes in reverse bias which provide the isolation to the solar panel. Here we use a 30W 2.5A solar panel which is made up of polycrystalline for high efficiency. Now when the solar energy get low the inverter will still go on with the alternative current supply. Circuit is divided into two section first is controlling section and other is MOSFET section. It must therefore supply a voltage that corresponds to an rms of 230 Volts sine-wave like household main supply or similar. Sine-wave voltages are not easy to generate. The advantage of sine-wave voltages is the soft temporal rise of voltage and the absence of harmonic oscillations, which cause unwanted counter forces on engines, interferences on radio equipment and surge currents on condensers. . On the other hand, square wave voltages can be generated very simply by switches, e.g. electronic valves like mosfet transistors. In former times electromagnetically switches, which operated like a door bell were used for this task. They were called "chopper cartridge" and mastered frequencies up to 200 cycles per second. The efficiency of a square wave inverter is higher than the appropriate sine wave inverter, due to its simplicity. SINE WAVE CIRCUIT DISCRIPTION

8. Sine-wave voltage and conventional square wave voltage with both 230 Volt rms

9. The resistor's function is to reduce the flow of electric current. This symbol is used to indicate a resistor in circuit diagram, known as a schematic. Resistance value is designated in units called the "Ohm." A 1000 Ohm resistor is typically shown as 1K-Ohm (kilo Ohm), and 1000 K-Ohms is written as 1M-Ohm (mega ohm).There are two classes of resistors; fixed resistors and the variable resistors. They are also classified according to the material from which they are made. The typical resistor is made of either carbon film or metal film. There are other types as well, but these are the most common. The resistance value of the resistor is not the only thing to consider when selecting a resistor for use in a circuit. The "tolerance" and the electric power ratings of the resistor are also important. The tolerance of a resistor denotes how close it is to the actual rated resistance value. For example, a ±5% tolerance would indicate a resistor that is within ±5% of the specified resistance value. The maximum rated power of the resistor is specified in Watts. Power is calculated using the square of the current (I2) x the resistance value (R) of the resistor. If the maximum rating of the resistor is exceeded, it will become extremely hot and even burn. Resistors in electronic circuits are typically rated 1/8W, 1/4W, and 1/2W. 1/8W is almost always used in signal circuit applications. RESISTORS

10. A transformer is a static device that transfers  electrical energy  from one  circuit  to another through  inductively coupled  conductors—the transformer's coils. A varying  current  in the first or primary winding creates a varying  magnetic flux  in the transformer's core and thus a varying  magnetic field  through the secondary winding. This varying magnetic field  induces  a varying  electromotive force (EMF)  or " voltage " in the secondary winding. This effect is called  mutual induction . If a  load  is connected to the secondary, an electric current will flow in the secondary winding and electrical energy will be transferred from the primary circuit through the transformer to the load. In an ideal transformer, the induced voltage in the secondary winding (V s ) is in proportion to the primary voltage ( V p ), and is given by the ratio of the number of turns in the secondary (N s ) to the number of turns in the primary ( N p ) as follows: TRANSFORMER

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