Adaptive Impedance-Conditioned Phase-Locked Loop for the VSC Converter Connected to Weak Grid

Software Phase Locked Loop Design Using C2000TM Microcontrollers for Single Phase Grid Connected Inverter

Grid connected applications require an accurate estimate of the grid angle to feed power synchronously to the grid. This is achieved using a software phase locked loop (PLL). This application report discusses different challenges in the design of software phase locked loops and presents a methodology to design phase locked loops using C2000 controllers for single phase grid connection applicati...

High Speed Delay-Locked Loop for Multiple Clock Phase Generation

In this paper, a high speed delay-locked loop (DLL) architecture ispresented which can be employed in high frequency applications. In order to design the new architecture, a new mixed structure is presented for phase detector (PD) and charge pump (CP) which canbe triggered by double edges of the input signals. In addition, the blind zone is removed due to the elimination of reset signal. Theref...

Grid-voltage Synchronization Algorithms Based on Phase-locked Loop and Frequency-locked Loop for Power Converters

Design of the new multilevel current source converter to grid connected applications

A novel current source multilevel inverter is introduced in this paper which is an appropriate alternative to be employed for low/medium power applications. the proposed converter is formed basic modules which paralleling these modules increse output current levels and improve quality of injected current to load or grid. in order to validate advantages of proposed converter versus the several m...

Computer investigation of a sine and cosine based phase-locked loop for single phase grid connected inverter

This paper presents a new approach for PLL for synchronization with the public grid phase and frequency of grid-connected single phase inverter. The approach uses trigonometric transformations of the inverter output voltage and the grid voltage. The proposed mathematical model is then studied by means of computer simulation for different voltage amplitudes of the grid voltage as well as the inv...