scholarly journals Reduced Switch Multilevel Inverter based STATCOM

2020 ◽  
Vol 6 (5) ◽  
pp. 117-121
Author(s):  
Akshay Kadu
Keyword(s):  
Direct Current ◽  
Power Factor ◽  
Control Method ◽  
Digital Simulation ◽  
Fast Response ◽  
Current Control ◽  
Multilevel Inverter ◽  
Control Technique ◽  
Basic Unit ◽  
Direct Current Control

This paper presents an application of reduced switch multilevel inverter topology to STACOM. This topology consists of basic unit in which two switches are connected in series and one H-bridge unit. Multilevel inverter is beneficial in terms of reliability and improved output quality. Multilevel inverter have only drawback of higher number of switches. This reduced switch topology has less number of switches as compared to conventional Cascaded H Bridge Inverter. Compared to direct control method, indirect control method is simple but due to fast response and precise control, direct current control method is quite effective. In this work STACOM is implemented to improve the Power factor of the power system. An extensive digital simulation of the recommended STATCOM and its controller is carried out using MATLAB/SIMULINK software to study system performance. Simulation results prove that using Direct current control technique overall power factor is improved.

DSTATCOM Inverse System PI Controller

2010 ◽  
Vol 439-440 ◽  
pp. 372-377
Author(s):  
Wen Jin Dai ◽  
Xiang Jie Chen
Keyword(s):  
Control Method ◽  
Digital Simulation ◽  
Dynamic Change ◽  
Decisive Role ◽  
Control Policy ◽  
Inhibitory Effect ◽  
Current Control ◽  
Electrical Network ◽  
Network Parameter ◽  
Direct Current Control

DSTATCOM used the direct current control method to suppress the voltage flickering which is caused by the undulatory property load, its reactive current tracking performance plays a decisive role for the inhibitory effect of the device.Considered the parameter installation difficulty and electrical network parameter dynamic change characteristic for conventional PI control when designs the controller, fuzzy logic was proposed that used to make the online adjustment for PI controller's parameter, which makes DSTATCOM has strong auto-adapted and robustness character. When the electrical network parameter changed, DSTATCOM still can suppress the voltage flickering very well. The digital simulation result has confirmed the control policy accuracy and validity.

The New Type of Reactive Power Compensation Device under Direct Current Control and Indirect Current Control

2013 ◽  
Vol 694-697 ◽  
pp. 826-829
Author(s):  
Yan Han ◽  
Xiaoming Zhang ◽  
Pan Pan Yang
Keyword(s):  
Direct Current ◽  
Reactive Power ◽  
Control Method ◽  
Reactive Power Compensation ◽  
Current Control ◽  
Instantaneous Reactive Power Theory ◽  
Direct Current Control ◽  
Indirect Current Control ◽  
The Difference ◽  
Compensation Device

This Paper Briefly Describes the Basic Principle of Reactive Power Compensation and Introduces the Indirect Current Control and Direct Current Control Method Based on Instantaneous Reactive Power Theory. Compare the Two Control Theory and Use the MATABLE Simulink Environment to Analyzing the Difference between the Two Methods

Study on the Direct Current Control Method Based on the d-q Transformation

2012 ◽  
Vol 588-589 ◽  
pp. 446-449
Author(s):  
Cong Mei Zha ◽  
Qi Ying Xu ◽  
Yong Sheng Zhu
Keyword(s):  
Simulation Model ◽  
Basic Principle ◽  
Direct Current ◽  
Control Method ◽  
Current Control ◽  
Direct Current Control ◽  
Static Var Generator ◽  
Simulation Results ◽  
And Control

Static var generator (SVG) basic principle and control method are introduced in the article, a direct current control method for SVG is put forward based on d-q transformation, this method is also analyzed from theory and made simulation model, the simulation results show that this control method is reasonable and effective.

Fixed Frequency Hysteresis Control Based STATCOM

2011 ◽  
Vol 383-390 ◽  
pp. 5936-5939
Author(s):  
Jun Li Zhang ◽  
Jian Zhuo Li ◽  
Yu Ren Zhang
Keyword(s):  
Control Method ◽  
Response Speed ◽  
Fast Response ◽  
Current Control ◽  
Circuit Switching ◽  
Fixed Frequency ◽  
Direct Current Control ◽  
Static Compensator ◽  
Hysteresis Control ◽  
The Impact

The operation principle of STATCOM (Synchronous Static Compensator - STATCOM) is analyzed. To improve STATCOM response speed, and to sustain the STATCOM main circuit switching device operating frequency stability, the direct current control method is introduced. Fixed frequency hysteresis control method based on the traditional hysteresis control strategy is proposed. The proposed strategy is simple, high precision, fast response speed, while it has less fluctuation with the impact of load parameters, and good robust characteristics.

Study on Main Circuit Mathematical Model and Control Method of Advanced Static Var Generator

2014 ◽  
Vol 556-562 ◽  
pp. 1789-1793
Author(s):  
Cong Mei Zha ◽  
Jia Yun Xu
Keyword(s):  
Mathematical Model ◽  
Simulation Model ◽  
Direct Current ◽  
Control Method ◽  
Current Control ◽  
Direct Current Control ◽  
Static Var Generator ◽  
Simulation Results ◽  
And Control

In this paper ,a main circuit mathematical model of Advanced Static Var Generator (ASVG) is established. a direct current control method for SVG is put forward based on d-q transformation, this method is also analyzed from theory and made simulation model, the simulation results show that this control method is reasonable and effective.

The Filtering Device under Improved Direct Current Control

2012 ◽  
Vol 588-589 ◽  
pp. 433-437 ◽  
Author(s):  
Ying Zhao ◽  
Jin Shan Ji ◽  
Nai Cheng Du
Keyword(s):  
Direct Current ◽  
Reactive Power ◽  
Control Method ◽  
Low Voltage ◽  
Power Grid ◽  
Current Control ◽  
Filter Method ◽  
Elimination Method ◽  
Direct Current Control

This paper mainly describes the mechanism and elimination method of harmonic in low-voltage power grid. Improve direct current control method in the traditional filter method,filtering the harmonic and timely compensating reactive power in the grid. On this condition, it can make the power grid safe and stability. At the same time simulate the improved direct current control method, and the results verify the correctness and rationality of the control method.

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