Phase-locked loop

instantaneous reactive power theory (IRPT) [6] and synchronous reference frame theory (SRF) [7]. Calculation of active and reactive powers by transforming three-phase voltages and currents into two phases is the principle of PQ theory, which does not work properly under non-sinusoidal supply conditions [8]. SRF theory is based on conversion of three-phase quantities into their corresponding dc components, and low-pass filters (LPFs) are employed for harmonic filtering which contain a time delay and deteriorate

foremost engineers and scientists of the country, I made sure I never missed an opportunity to garner as much of knowledge as possible. I did my project on the topic ‘“Digital Locking Of Phase Lock Loop”. Working under Scientist Aditya Ganesh, I and the team I was part of worked on Implementation of Phase Locked Loop digitally. Programming the entire design, Implementing it on an FPGA, solving interface issues and many more, we managed to do it successfully. For the first time I got an industry experience

converted into synchronous reference frame using the park transformation [12]. The open loop plant model was derived and a relationship between Vinv and Vc was obtained (see Fig. 2). Applying voltage balance equation to loop 1 of Fig. 2 and current balance equation to node 1, the state space equations (1) and (2) were obtained: Considering the above governing equations of the plant model ((3), (4) and (5)), the open loop state space representation was obtained and is given in Fig. 3. Notations are as same

Control System and Performance of DC Micro grid under Various Loads Ya Min Soe#1, Soe Soe Ei Aung#2, Zarchi Linn#3 Ph.D Student, Department of Electrical Power Engineering, Yangon Technological University, Yangon Technological University, InseinTownship, Yangon, Myanmar 1yaminsoe.lpt@gmail.com 2soesoeeiaung@gmail.com 3zclinn@gmain.com Ph No: +95 95070091 Abstract: DC microgrid is the high quality electric power system focused on the development of renewable energy resources. The dc distribution

Control System and Performance of DC Microgrid under Various Loads Ya Min Soe#1, Soe Soe Ei Aung#2, Zarchi Linn#3 Ph.D Student, Department of Electrical Power Engineering, Yangon Technological University, Yangon Technological University, InseinTownship, Yangon, Myanmar 1yaminsoe.lpt@gmail.com 2soesoeeiaung@gmail.com 3zclinn@gmain.com Ph No: +95 95070091 Abstract: DC microgrid is the high quality electric power system focused on the development of renewable energy resources. The dc distribution

Series inductors are also useful for harmonics attenuation in a three phase system but aren’t self-sufficient for filtering purpose. The LCL filter achieves the objective of smoothing of output current from the VSI. In an interconnected system, the implementation of the filter results in cost savings, reduction in overall

single-phase three-level SPWM converter (u is the input signal for the corresponding block, not the global signal) 3.4 SSSC Controller The controller for the SSSC can be isolated, generally, into two main controllers, namely internal and external controllers. The main function of the internal controller is to give the control signal to drive the gate pattern generator of the power converter keeping in mind to generate a fundamental output voltage waveform with the desired magnitude and phase angle

ISA-95 and electrical dispatching standards to endow smartness and flexibility to MGs. The hierarchical control proposed in this paper consists of three levels: 1) The primary control is based on the droop method, including an output-impedance virtual loop; 2) the secondary control allows the restoration of the deviations produced by the primary control; and 3) the tertiary control manages the power flow between the MG and the external electrical distribution system. Results from a hierarchical-controlled

Generally, the energy of renewable power systems is always inconstant in real life. This requires the insertion of an interface, such as simultaneous network adapters so as to synchronise and regulate the sustainable power system to the grid. Phase locked loop is used (PLL) is applied to manage the synchronisation of the network [6]. Achieve the method to obtain the greatest output of mechanical power which can be produced from wind turbines at specific wind rate and integrate the produced energy to

diode modulator of Fig1.0, the carrier is coupled via a transformer to the tank circuit in the secondary. The carrier undergoes a phase shift, ∆¦Èc, due to the complex impedance of the tank. The modulating signal changes the biasing point and consequently Cj of the diode. This in turn changes the resonant frequency of the tank circuit and consequently, the phase shift of the incoming signal. If design properly, ¦Èc(t) will vary at the same rate as the modulating signal so that ¦Èc(t)= a(t)