Non - Sinusoidal Power Supply Technology Based on Space Vector PWM for Multiphase Variable Speed Drives

2018 ◽  
Author(s):  
Xu Liu ◽  
Wubin Kong ◽  
Ronghai Qu ◽  
Qiwei Xu
Keyword(s):  
Power Supply ◽  
Variable Speed ◽  
Space Vector Pwm ◽  
Space Vector ◽  
Variable Speed Drives

scholarly journals Systematic Implementation of Multi-Phase Power Supply (Three to Six) Conversion System

Electronics ◽  
2019 ◽  
Vol 8 (1) ◽  
pp. 109 ◽  
Author(s):  
Rashid Al-Ammari ◽  
Atif Iqbal ◽  
Amith Khandakar ◽  
Syed Rahman ◽  
Sanjeevikumar Padmanaban
Keyword(s):  
Phase Transformation ◽  
Phase Difference ◽  
Power Supply ◽  
Phase System ◽  
Variable Speed ◽  
Variable Speed Drives ◽  
Pulse Input ◽  
Wind Energy Generation ◽  
Three Phase ◽  
Multi Phase

Multiphase (more than three) power system has gained popularity due to their inherent advantages when compared to three-phase counterpart. Multiphase power supply is extensively used in AC/DC multi-pulse converters, especially supply with multiple of three-phases. AC/DC converter with multi-pulse input is a popular solution to reduce the ripple in the DC output. Single-phase and three-phase transformers and phase transformation from single to multiphase are employed in variable speed drives application to feed the multi-cell H-Bridge converters and multi-pulse AC-DC converters. Six-phase system is extensively discussed in the literature for numerous applications ranging from variable speed drives to multiphase wind energy generation system. This paper shows the systematic phase transformation technique from three-phase to six-phase (both symmetrical and asymmetrical) for both understanding and teaching purposes. Such an approach could help students understand a promising advanced concept in their undergraduate courses. When phase difference between the two consecutive phases of six phases has a phase difference of 60, it is called a symmetrical six-phase system; while an asymmetrical or quasi, six-phase has two set of three-phase with a phase shift of 30 between the two sets. Simulation and experimental results are also presented.

An experimental demonstration of hybrid fuzzy-fuzzy space-vector control on AC variable speed drives

2017 ◽  
Vol 31 (S2) ◽  
pp. 777-792
Author(s):  
Muawia Magzoub ◽  
Nordin Saad ◽  
Rosdiazli Ibrahim ◽  
Muhammad Irfan
Keyword(s):  
Vector Control ◽  
Experimental Demonstration ◽  
Variable Speed ◽  
Space Vector ◽  
Variable Speed Drives ◽  
Fuzzy Space

A Twelve Concentric Multilevel Twenty-Four Sided Polygonal Voltage Space Vector Structure for Variable Speed Drives

2019 ◽  
Vol 34 (10) ◽  
pp. 9906-9915 ◽  
Author(s):  
Krishna Raj R ◽  
K. Gopakumar ◽  
Apurv Kumar Yadav ◽  
L. Umanand ◽  
Mariusz Malinowski ◽  
...  
Keyword(s):  
Variable Speed ◽  
Space Vector ◽  
Voltage Space Vector ◽  
Variable Speed Drives ◽  
Vector Structure

Improvement of power supply quality at a modern mining and processing plant

2020 ◽  
pp. 82-86
Author(s):  
G. P. Kornilov ◽  
◽  
I. R. Abdulveleev ◽  
Yu. N. Kondrashova ◽  
K. E. Odintsov ◽  
...  
Keyword(s):  
Power Supply ◽  
Power Plants ◽  
Electromagnetic Compatibility ◽  
Economic Effect ◽  
Processing Plant ◽  
Variable Speed ◽  
Variable Speed Drives ◽  
Electric Drives ◽  
Basic Power ◽  
Chelyabinsk Region

The article discusses power supply quality in an industry in terms of Mikheevsky GOK—one the largest mining and processing plants in the Chelyabinsk Region and in Russia. The power supply quality is understood here as the reliability, economic efficiency and electromagnetic compatibility of basic power consumers. These objectives can be successively achieved through in-house power generation by gas piston power plants, as well as thanks to banks of supercapacitors capable to maintain power factor within the present ranges. The capital expenses connected with buying mill electric drives with capacity to tens megawatts are appreciably cut down owing to an original decision to use asynchronous motors with phase-wound rotors and liquid rheostats, which were commonly used at the dawn of adjustable electric drives. That decision allowed rejecting expensive variable speed drives at admissible power quality. Design and installation of capacitors with current-limiting coils neglected harmonics of lowvoltage variable speed drives and follow-up resonances, which resulted in overcurrents and in failure of the capacitors. Finally, the plant sustained considerable losses. The way out of this situation is shown by the research and modeling as series connection of currentlimiting coils and filters set to suppress outer lowest harmonics (5, 7, 11) in the canonical series. The economic effect and payback period of the implementation of the proposed solution are governed, first, by the extended failure-free operation of capacitors due to elimination of overcurrents and reduction in energy loss in wattless power flows and, second, by zero extra expenses connected with installation of filter-equipped coils. The study was supported by the President of the Russian Federation, Grant for Young Candidates of Sciences—MK-499.2020.8.

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