The designs of low power AC-DC converter for power electronics system applications

Radzuan, Roskhatijah; Raop, Mohd Azril Ab; Salleh, Mohd Khairul Mohd; Hamzah, Mustafar Kamal; Zawawi, Ruhaifi Abdullah

doi:10.1109/iscaie.2012.6482080

Cited by 13 publications

(4 citation statements)

References 14 publications

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“…The technology behind almost all the switching power supplies and other applications such as power converters [10], inverters [11], motor drives, incandescent lamp dimming [12], heating applications [8] and motor soft starters [13], is power electronics. It pro-vides solutions from very small mobile phones to huge turbines and trains; the power range can vary from milliWatts to GigaWatts.…”

Section: List Of Symbolsmentioning

confidence: 99%

Internal model design for power electronic controllers

Gunasekara¹

2019

15th IET International Conference on AC and DC Power Transmission (ACDC 2019)

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This thesis deals with the problem of control system design for power electronic controllers when high performance is desired despite unaccounted for internal and external conditions. Factors such as parameter variations, operating condition changes, and filtering and measurements delays, may adversely impact the performance of a circuit whose controller design is not immune to external and internal disturbances. The thesis explores the method of internal model design as a viable approach for designing controllers with superior performance despite system variations. Following a presentation of the theoretical background of the internal model design, the thesis considers two examples of state variable models, improving the stability of a voltage source converter and speed control of an induction motor. Conclusions show the new control system is more stable and offers better controllability despite unexpected system variations, compared to classical control system.

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Section: List Of Symbolsmentioning

confidence: 99%

Internal model design for power electronic controllers

Gunasekara¹

2019

15th IET International Conference on AC and DC Power Transmission (ACDC 2019)

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“…e essential devices can be categorized into two types: rectifiers and inverters [9]. e rectifier is installed at the sending side of the HVDC transmission line to convert AC to DC power.…”

Section: Introductionmentioning

confidence: 99%

Effects of Conditional Changes on High-Voltage Direct Current Transmission Line Characteristic

Pothisarn

Ngaopitakkul

Leelajindakrairerk

et al. 2022

Journal of Electrical and Computer Engineering

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The high-voltage direct current (HVDC) transmission system, which links the Gurun Substation of the National Electric Authority of Malaysia (Tenaga Nasional Berhad, TNB) with the Khlong Ngae Station of the Electricity Generating Authority of Thailand (EGAT), has been extensively researched to achieve the highest quality because it is the largest of its kind in Thailand, and there is a plant to expand its transmission power. However, the impact on the whole system is under-researched. To study and develop this system, the HVDC transmission line is modelled with the MATLAB/Simulink program and a laboratory setup to investigate the effect of transmission line distance, load power, and voltage on power loss, voltage drop, and waveform. The HVDC transmission line parameters are calculated from the actual transmission line parameters and converted to the simulation model parameters using the per-unit method. The model is verified and tested by the simulation program before creating the experimental setup. The simulation and experimental results demonstrate the effects of changing system conditions via the three aspects. All the three conditions directly affect the HVDC transmission line; nevertheless, they affect each aspect differently.

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“…HVDC transmission system involve the use of converter for the conversion of AC to DC (rectifier) at the transmitting end, and converting the DC back to AC at the receiving end (inverter), [4]. This converter usually has a 12-pulse arrangement, of valves connected in a star-delta, star-star formation to the AC networks.…”

Section: Introductionmentioning

confidence: 99%

A Review of LCC-HVDC and VSC-HVDC Technologies and Applications

Oni

Mbangula

Davidson

2016

TEEE

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High Voltage Direct Current (HVDC) systems has been an alternative method of transmitting electric power from one location to another with some inherent advantages over AC transmission systems. The efficiency and rated power carrying capacity of direct current transmission lines highly depends on the converter used in transforming the current from one form to another (AC to DC and vice versa). A well configured converter reduces harmonics, increases power transfer capabilities, and reliability in that it offers high tolerance to fault along the line. Different HVDC converter topologies have been proposed, built and utilised all over the world. The two dominant types are the line commutated converter LCC and the voltage source converter VSC. This review paper evaluates these two types of converters, their operational characteristics, power rating capability, control capability and losses. The balance of the paper addresses their applications, advantages, limitations and latest developments with these technologies.

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The designs of low power AC-DC converter for power electronics system applications

Cited by 13 publications

References 14 publications

Internal model design for power electronic controllers

Internal model design for power electronic controllers

Effects of Conditional Changes on High-Voltage Direct Current Transmission Line Characteristic

A Review of LCC-HVDC and VSC-HVDC Technologies and Applications

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