DESIGN OF AN AUTOMATIC TRANSFER SWITCHING DEVICE
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Abstract
The power supply in developing countries is practically low owing to the inability of public power plants to meet the demand of its population and this has brought in the need for an
alternative source of electrical power. Where this is the case, a transfer switch is needed to transfer the supply of power from the different sources to the load. A manual transfer switch
requires that a user effects the overall process of power changeover from the different supply sources to the load and this could become cumbersome hence, the need for an automatic transfer switch. The objective of this design centers on sensing the primary/main power supply source, to startup the secondary power source (generator) when the main power supply source fails, shutdown the generator when the main power supply source is restored, to startup the secondary power source when power fluctuations from the main power supply source is detected and to automatically transfer the load to the available power source, thereby making the entire process easy and reliable. The design was carried out with low cost solid state electronic components such as; Relays, transformer, microcontroller, voltage regulator, resistors, capacitors, diodes.
alternative source of electrical power. Where this is the case, a transfer switch is needed to transfer the supply of power from the different sources to the load. A manual transfer switch
requires that a user effects the overall process of power changeover from the different supply sources to the load and this could become cumbersome hence, the need for an automatic transfer switch. The objective of this design centers on sensing the primary/main power supply source, to startup the secondary power source (generator) when the main power supply source fails, shutdown the generator when the main power supply source is restored, to startup the secondary power source when power fluctuations from the main power supply source is detected and to automatically transfer the load to the available power source, thereby making the entire process easy and reliable. The design was carried out with low cost solid state electronic components such as; Relays, transformer, microcontroller, voltage regulator, resistors, capacitors, diodes.
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