A case study on the impact of phase-locked loop (PLL) on the control and behavior of TCSC during unbalanced three-phase conditions is discussed in this paper. For this study, PSCAD/EMTDC platform is used to simulate a TCSC-based compensation in the transmission line. One PLL is taken ...
This paper analyzes the small-signal impedance of three-phase grid-tied inverters with feedback control and phase-locked loop (PLL) in the synchronous refe... B Wen,D Boroyevich,R Burgos,... - Cpes Conference 被引量: 0发表: 2017年 加载更多来源...
The phase locked loop (PLL) is an important control unit of the QPP control scheme. To obtain accurate phase information and frequency of the input supply, the dqPLL method has been proposed. The proposed structure uses the coordinate transformation of 3-phase voltages form ab-c to d-q and...
The control strategy proposed uses the instantaneous reactive power theory (p鈥搎 theory) and phase-locked loop (PLL). The p-q theory uses two virtual axes in the Park Transformation, which provide to the control system a good dynamic response, accuracy, and decoupling between the control and...
where u sd ( 1 ) and u sq ( 1 ) are the d-axis and q-axis components of the PCC positive voltage, U ( 1 ) m is its amplitude and ω is the system angular frequency which is obtained by the phase-locked loop (PLL) in real time, and α 1 is the initial phase of u sa (...