IUP Publications Online
Home About IUP Magazines Journals Books Archives
     
Recommend    |    Subscriber Services    |    Feedback    |     Subscribe Online
 
The IUP Journal of Electrical and Electronics Engineering:
Design and Implementation of a 5 kVA Inverter
:
:
:
:
:
:
:
:
:
 
 
 
 
 
 
 

The paper describes the design and construction of a 5 kVA Pulse Width Modulated (PWM) Metal Oxide Semiconductor Field Effect Transistor (MOSFET)-based inverter, which works on the principle of PWM. The inverter uses IC SG3524 and a pair of Twelve MOSFETs to drive the load. The design and implementation starts with the power supply. Component selection was made with the aid of electronics data book, which made the design and calculations very easy. One main feature of this inverter is the monitoring section, and the battery-charging section connected to the inverter circuit. The inverter converts DC supply of the battery into AC power supply required by most electrical appliances/equipment when the AC main is not available; and when the AC main is available, the supply goes to the AC main sensor, the relays and battery charging section of the inverter. This inverter can be used for domestic purpose, and it is not recommended for industrial purpose where high current is required for application, such as starting a heavy-duty motor.

 
 

The erratic nature of power supply is a thing of major concern to all Nigerians. The cost of acquiring a generator set and the need to supplement the irregular voltage supply by the Electricity Distribution Companies of Nigeria make it essential for the construction of DC/AC power inverter.

An inverter is a device which converts the DC supply of the battery into AC power supply required by most of the electrical/electronic equipment. The process through which the inverter converts DC power supply to AC power supply is called inversion. This inversion process is the reverse of the rectifier process, where the AC is converted into DC power supply.

In the past, Pulse Width Modulation (PWM) techniques were employed in voltage and current source inverter only. Availability of self-commuted devices, such as power transistor, Metal Oxide Semiconductor Field Effect Transistor (MOSFET), Insulated Gate Bipolar Transistor (IGBT) and Gate Turn-off Thyristor (GTO), have made pulse width modulated AC to DC converter popular in many applications. The steady state and dynamic performance of inverters, AC to DC converters and DC and AC drives are significantly dependent on the PWM techniques (Dubey and Kasarabada, 1993).

 
 
 

Electrical and Electronics Engineering Journal, MOSFET, PWM, AC, DC, Control Unit, Oscillator, Transformer, Rectifier, Inverter