Research on phase-locked loop technique based on three-dimensional coordinate transformation

Research on Coordinate Transformation of the Three- phase Circuit

Abstract The different three-phase circuit coordinate transformation matrixes were given in relevant literatures, which might cause some difficulties to understand and apply the coordinate transformation. The paper presented a general expression of the coordinate transformation matrixes in three-phase circuit and pointed out that the coordinate transformation matrixes having different specific ...

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

Quaternion-Based Iterative Solution of Three-Dimensional Coordinate Transformation Problem

Three-dimensional coordinate transformation problem is the most frequent problem in photogrammetry, geodesy, mapping, geographical information science (GIS), and computer vision. To overcome the drawback that traditional solution of the problem based on rotation angles depends strongly on initial value of parameter, which makes the method ineffective in the case of super-large rotation angle, t...

Digital Phase - Locked Loop Based on FIR Filters

In this paper, a new digital phase-locked loop (DPLL) is proposed based on finite impulse response (FIR) filters. The proposed DPLL is more robust to incorrect noise information than the existing DPLL using fixed gain. We show the effectiveness of the proposed DPLL via a numerical example.

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...