Modelling and power quality enhancement of induction motor with soft starter using synchronous reference frame theory

2011 ◽  
Author(s):  
S. Charles ◽  
C. Vivekanandant
Keyword(s):  
Induction Motor ◽  
Power Quality ◽  
Reference Frame ◽  
Frame Theory ◽  
Quality Enhancement ◽  
Synchronous Reference Frame ◽  
Soft Starter

scholarly journals Power Quality Investigation by Reduced Switching UPQC

2020 ◽  
Vol 22 (4-5) ◽  
pp. 335-347
Author(s):  
Pradeep Kumar
Keyword(s):  
Power Quality ◽  
Reference Frame ◽  
Unit Vector ◽  
Frame Theory ◽  
Control Technique ◽  
Control Techniques ◽  
Switching Losses ◽  
Synchronous Reference Frame

In this paper, nine switches UPQC topology with different control techniques have been depicted and compared their performances to accomplish clear inspection of the best control techniques. As conventional UPQC having twelve switches of six legs enhances the switching losses, circuit complication, costly etc. Hence nine switches UPQC topology is intended to reduce the switching losses, complexity, size and cost. This proposed topology has only three legs with three switches in each leg making total number of nine switches. The three control techniques such as Unit vector template, PQ theory and Synchronous reference frame theory have been employed in the nine switch UPQC topology. The simulation has been carried out separately for each control technique in MATLAB/SIMPOWER environment and results have been verified for higher efficiency of nine switch UPQC topology. The comparative THD of source currents and load voltages under these control techniques have been analysed. The obtained THD values are below 5% as per IEEE-519 standard.

scholarly journals Power Quality Improvement by Unified Power Quality Conditioner Based on CSC Topology Using Synchronous Reference Frame Theory

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Rajasekaran Dharmalingam ◽  
Subhransu Sekhar Dash ◽  
Karthikrajan Senthilnathan ◽  
Arun Bhaskar Mayilvaganan ◽  
Subramani Chinnamuthu
Keyword(s):  
Power Quality ◽  
Reference Frame ◽  
Current Source ◽  
Frame Theory ◽  
Photovoltaic System ◽  
Superior Performance ◽  
Real Power ◽  
Unified Power Quality Conditioner ◽  
Synchronous Reference Frame ◽  
Power Quality Conditioner

This paper deals with the performance of unified power quality conditioner (UPQC) based on current source converter (CSC) topology. UPQC is used to mitigate the power quality problems like harmonics and sag. The shunt and series active filter performs the simultaneous elimination of current and voltage problems. The power fed is linked through common DC link and maintains constant real power exchange. The DC link is connected through the reactor. The real power supply is given by the photovoltaic system for the compensation of power quality problems. The reference current and voltage generation for shunt and series converter is based on phase locked loop and synchronous reference frame theory. The proposed UPQC-CSC design has superior performance for mitigating the power quality problems.

Performance Analysis of Unified Power Quality Conditioner for Power Quality Improvement

2014 ◽  
Vol 573 ◽  
pp. 690-695
Author(s):  
Ragavan Saravanan ◽  
P.S. Manoharan
Keyword(s):  
Power Quality ◽  
Control Algorithm ◽  
Electrical Power ◽  
Frame Theory ◽  
Nonlinear Loads ◽  
Unified Power Quality Conditioner ◽  
Synchronous Reference Frame ◽  
Power Quality Improvement ◽  
Linear And Nonlinear ◽  
Power Quality Conditioner

The Unified Power Quality Conditioner plays an important role in the constrained delivery of electrical power from a source to an isolated pool of load or from a source to the grid. This article is presented new control approaches for both series and shunt inverter. The proposed control algorithm for series and shunt converters based on FLC and synchronous reference frame theory respectively. The proposed approach eliminates the total harmonic distortions (THD) efficiently, and mitigates sag and swell present in the linear and nonlinear loads.

Model of Vector Controlled Induction Drive

2009 ◽  
Vol 147-149 ◽  
pp. 149-154
Author(s):  
Roma Rinkeviciene ◽  
Andrius Petrovas
Keyword(s):  
Induction Motor ◽  
Reference Frame ◽  
Real Variable ◽  
Flux Linkage ◽  
Current Channel ◽  
Stator Current ◽  
Synchronous Reference Frame ◽  
Rotor Flux ◽  
Drive Model ◽  
Motor Model

The paper presents the model of vector controlled induction motor. Induction motor model is carried out in reference frame, fixed on stator. Elaborated model of the drive is suitable for investigation dynamics because output signals appear as real currents, flux linkages and other variables. Vector control law model is implemented for variables in synchronous reference frame; therefore controller operates with transformed variables. Structure of designed model reflects the real variable speed drive. Model of vector controlled induction drive comprise model of induction motor, feedback signals and blocks as well as speed and flux reference blocks and controllers for producing motor supply signals. Feedback blocks are used for calculation stator current vector in the rotor flux linkage reference frame. For flux and speed control are designed lag controllers. Between advantages of that model is additional simulation of current channel law.

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