학술논문

DSP/FPGA implementation of a phase locked loop for digital power electronics
Document Type
Conference
Source
2010 IEEE Region 8 International Conference on Computational Technologies in Electrical and Electronics Engineering (SIBIRCON) Computational Technologies in Electrical and Electronics Engineering (SIBIRCON), 2010 IEEE Region 8 International Conference on. :665-670 Jul, 2010
Subject
Computing and Processing
Communication, Networking and Broadcast Technologies
Fields, Waves and Electromagnetics
Phase locked loops
Harmonic analysis
Power harmonic filters
Oscillators
Voltage control
Switches
Frequency control
Language
Abstract
This paper examines the implementation of a Phase Locked Loop (PLL) for obtaining the phase angle information of three-phase grid. The paper compares techniques previously employed to implement the PLL and provides their merits and demerits. A bang-bang type PLL has been designed and implemented in a Digital Signal Processor (DSP) so as to ensure that the PLL continues to function during severe grid conditions. Experimental results have been presented for various cases to verify the theory.