Implementation of single-phase grid synchronization module with low-end microcontrollers

Global energy market reveal the necessity of the use of renewable energy sources which requires an interface converter if their energy has to be passed into the grid. The operation of the interface converters depends on the operation of their synchronisation unit. Low power sources need simpler and cheaper control systems. This paper shows an example of simple implementation of the grid synchronization module based on an MSP430 microcontroller. This example follows from a complete PLL system, finally giving simplified, operating system. The obtained preliminary results confirm the operation of the propose synchronizer, but show the necessity of its further improvement.