Improved voltage regulation for current-source inverters

2001 ◽  
Vol 37 (4) ◽  
pp. 1028-1036 ◽  
Author(s):  
D.N. Zmood ◽  
D.G. Holmes
Keyword(s):  
Current Source ◽  
Voltage Regulation ◽  
Current Source Inverters

High-Performance Voltage Regulation of Current Source Inverters

2011 ◽  
Vol 26 (9) ◽  
pp. 2439-2448 ◽  
Author(s):  
Sorrell Alistair Shield Grogan ◽  
Donald Grahame Holmes ◽  
Brendan Peter McGrath
Keyword(s):  
High Performance ◽  
Current Source ◽  
Voltage Regulation ◽  
Current Source Inverters

scholarly journals Contribution of Voltage Support Function to Virtual Inertia Control Performance of Inverter-Based Resource in Frequency Stability

Energies ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 4220
Author(s):  
Dai Orihara ◽  
Hiroshi Kikusato ◽  
Jun Hashimoto ◽  
Kenji Otani ◽  
Takahiro Takamatsu ◽  
...  
Keyword(s):  
Reactive Power ◽  
Control Function ◽  
Current Source ◽  
Voltage Control ◽  
Frequency Stability ◽  
Voltage Regulation ◽  
System Stability ◽  
Voltage Source ◽  
Apparent Difference ◽  
Virtual Inertia

Inertia reduction due to inverter-based resource (IBR) penetration deteriorates power system stability, which can be addressed using virtual inertia (VI) control. There are two types of implementation methods for VI control: grid-following (GFL) and grid-forming (GFM). There is an apparent difference among them for the voltage regulation capability, because the GFM controls IBR to act as a voltage source and GFL controls it to act as a current source. The difference affects the performance of the VI control function, because stable voltage conditions help the inertial response to contribute to system stability. However, GFL can provide the voltage control function with reactive power controllability, and it can be activated simultaneously with the VI control function. This study analyzes the performance of GFL-type VI control with a voltage control function for frequency stability improvement. The results show that the voltage control function decreases the voltage variation caused by the fault, improving the responsivity of the VI function. In addition, it is found that the voltage control is effective in suppressing the power swing among synchronous generators. The clarification of the contribution of the voltage control function to the performance of the VI control is novelty of this paper.

scholarly journals Perspectives of Application of Frequency Converters on the Base of Current Source Inverters for Wind Power

2019 ◽  
Vol 0 (20 (1345)) ◽  
pp. 65-71
Author(s):  
Александр Юрьевич Бару ◽  
Евгений Аркадьевич Педан ◽  
Андрей Олегович Ус ◽  
Владислав Васильевич Филатов ◽  
Юрий Львович Шинднес
Keyword(s):  
Wind Power ◽  
Current Source ◽  
Frequency Converters ◽  
Current Source Inverters

scholarly journals FEATURES OF SECTIONING THE TURNS OF THE TRANSFORMING ELEMENT OF THE TRANSFORMER-KEY ACTUATING STRUCTURE IN THE BOOST CHANNEL OF THE DC POWER SYSTEM

2020 ◽  
Vol 2020 (6) ◽  
pp. 25-31
Author(s):  
K.O. Lypkivskyi ◽  
◽  
A.G. Mozharovskyi ◽  
Keyword(s):  
High Efficiency ◽  
A Priori ◽  
Current Source ◽  
Voltage Regulation ◽  
Specific Class ◽  
Voltage Supply ◽  
Emergency Situations ◽  
Time Control ◽  
Finite Set ◽  
In Series

One of the effective ways to ensure the normalized operation of the electricity consumer with an unstable primary power source is the organization of the corresponding voltage supply channel. In a system with a direct current source, the voltage supply is implemented by introducing a rectifier semiconductor bridge in series with the load, into the diagonal of which AC energy is supplied, the voltage level of which is purposefully changed by a corresponding converter with a transformer- and-switches executive structure (TSES). To achieve high efficiency of the use of key elements of TSVS, it is proposed to assign the functions of rectification and voltage regulation to a specific class of TSES – a multilevel rectifier consisting of a transformer and a finite set of parallel connected pairs of serially connected thyristors, the common points of which are connected to the corresponding taps of the sectioned secondary turns of the transformer. By discrete-time control of thyristors, it is necessary to regulate voltage levels, it is attached. The linearity of the scale of these levels is ensured by the proposed transformer sectioning law. This power supply system is characterized by small energy losses in semiconductor elements (only two thyristors work at a time), and the a priori impossibility of emergency situations during transitions from one level to another. References 14, figures 3, tables 3.

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