Conversion of conventional AC to inverted AC
In an inverter AC,the 50 hz ac in our power supply is first converted in to dc and then it is reconverted into an ac where the frequency is infinitly variable form 10 hz to 100 hz this variable frequency enables the main compressor motor of ac to turn at different speed with the fixed 50 hz ac of ou
2025-06-28 16:30:57 - Adil Khan
Conversion of conventional AC to inverted AC
Project Area of Specialization Electrical/Electronic EngineeringProject SummaryIn an inverter AC,the 50 hz ac in our power supply is first converted in to dc and then it is reconverted into an ac where the frequency is infinitly variable form 10 hz to 100 hz this variable frequency enables the main compressor motor of ac to turn at different speed with the fixed 50 hz ac of our electric supply the compressor moto of spilt ac can only turn at one speed.so we want to control speed of compressor.the most efficient way is to control the frequency of our supply voltage.the amount of cooling or heating required by an ac unit varies dependent on the outdooor temperature in the amount of heat in the room.when the cooling or heating capcity needs to be increased the compressor will operate at high speed and vice versa.when the inverter AC is switched on the compressor operates at high speed to cool or heat the room quickly.as the room temperature approuches to the set temperature the compressors slow downs maintaing set temperature and saving energy.we are working to convert spilt ac to inverter ac(power sving) using variable frequency phenomana.
Project Objectives1.Conversion of Conventional AC to Inverter AC using VFD(variable frequency drive).
2.Reduce the cost of inverter, size and minimize the conduction loss :For 1.5 Ton (1800 BTU ) of power is utilized at supply of 220V AC, the running current will be (7-8)A and starting current will be estimated as (11-13)A.
3.Soft start of Compressor Motor to minimize Input torque/Power surge.
Project Implementation Method1.first we have to convert ac supply to dc using rectification method and then reconvert dc to ac to control the frequency of ac supply just controling the switching of igbts by microcontroller.
2.temperature sensor will detect the temperature of room at every instant but our microcontroller will take value from temperature sensor after every 3 sec.
3.microcontroller will compel the compressor to maintain the set temperature by variying the frequency of compressor.after comparing the temperature by instructions given in the code .
4.the speed of the compressor is different at different temperature for attaing the set temperature in minimum time.
5.to make it power saving we will run our compressor at low speed just to run the ac at low ampers.
6.the variation in the frequency/speed of compressor is usually controlled by prototype VFD.
Benefits of the Project- Cost-effective
Owing to the operational method of inverter air conditioner, its compressor does not work at full capabilities, hence saving you from paying a huge amount of money at the cost of electricity units. Thus it is much more efficient than a non-inverter AC as it helps you save a lot on electric bills.
- Energy-efficient
The inverter technology is regarded as the best solution when it comes to economic and energy-saving operation. In an inverter model, the heating and cooling are automated in a seamless and power-saving manner whereas former technologies used to the consumer a lot of electricity regardless of the usage.
- Better Cooling
A non-inverter AC cannot adjust the level of cooling, so it cannot cool the area faster when required. On the other hand, inverter AC can run the compressor at a higher speed to cool the entire area fast when required.
- Silent Operation
The inverter AC runs at a very slow speed, thus it is much more silent. In split inverter ACs, apart from the low compressor noise, there is comparatively less noise inside the room as well.
- Sound Sleep
AC enables you to have a sound sleep as it maintains the temperature of the room steady at the temperature you set on the thermostat of the AC
Technical Details of Final Deliverablethe power saving technique by using vfd/inverter saves the power consumption of compressor.ususally three main types of compressors are used
1.AC compressors
2.refrigerators compressors
3.air compressors
our inverter can be used in all of these three to save the power.actyally the inverter acts as a slow starter which will start at low frequency from 50hz as we start our compressor from 35hz and will run the compressor on full load and varie the speed of rotar by varing the frequency of supply and to run the compressor on low spped to decrese the current of induction motor used in normal compressors.the compressor speed varies with varieation of temperature.
we set the temperature by bluetoth device once then our system will detect the temperature of room and starts the compressor the speed of compreesor will control by microcontroler output which will set the fequency of supply to compressor by driven ic's.
Final Deliverable of the Project HW/SW integrated systemCore Industry Energy Other Industries Manufacturing Core Technology OthersOther Technologies BlockchainSustainable Development Goals Affordable and Clean EnergyRequired Resources| Item Name | Type | No. of Units | Per Unit Cost (in Rs) | Total (in Rs) |
|---|---|---|---|---|
| Total in (Rs) | 75960 | |||
| air conditioner | Equipment | 1 | 18000 | 18000 |
| prototype compressor | Equipment | 1 | 5500 | 5500 |
| ir2110 | Equipment | 2 | 200 | 400 |
| diode-40amp | Equipment | 1 | 150 | 150 |
| capacitor 47uf | Equipment | 1 | 250 | 250 |
| igbts 100amp | Equipment | 4 | 2200 | 8800 |
| atmega2560 | Equipment | 1 | 1600 | 1600 |
| pcb board | Equipment | 1 | 2000 | 2000 |
| temperature sensor lm35 | Equipment | 1 | 200 | 200 |
| bluetooth hc05 | Equipment | 1 | 650 | 650 |
| pwer supply 12/5 | Equipment | 2 | 150 | 300 |
| power cable | Equipment | 3 | 120 | 360 |
| autocoppler | Equipment | 4 | 30 | 120 |
| female header | Equipment | 6 | 50 | 300 |
| soldering wire | Equipment | 2 | 250 | 500 |
| power connector 40 amp | Equipment | 4 | 250 | 1000 |
| wood board | Equipment | 1 | 300 | 300 |
| extra expenses | Miscellaneous | 1 | 3000 | 3000 |
| air conditioner | Equipment | 1 | 18000 | 18000 |
| prototype compressor | Equipment | 1 | 5500 | 5500 |
| ir2110 | Equipment | 2 | 200 | 400 |
| diode-40amp | Equipment | 1 | 150 | 150 |
| capacitor 47uf | Equipment | 1 | 250 | 250 |
| igbts 100amp | Equipment | 0 | 0 | 0 |
| atmega2560 | Equipment | 1 | 1600 | 1600 |
| pcb board | Equipment | 1 | 2000 | 2000 |
| temperature sensor lm35 | Equipment | 1 | 200 | 200 |
| bluetooth hc05 | Equipment | 1 | 650 | 650 |
| pwer supply 12/5 | Equipment | 2 | 150 | 300 |
| power cable | Equipment | 3 | 120 | 360 |
| autocoppler | Equipment | 4 | 30 | 120 |
| female header | Equipment | 0 | 0 | 0 |
| soldering wire | Equipment | 0 | 0 | 0 |
| power connector 40 amp | Equipment | 0 | 0 | 0 |
| wood board | Equipment | 0 | 0 | 0 |
| extra expenses | Miscellaneous | 1 | 3000 | 3000 |