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Other Titles: The Independent Inverter of a Current as a Source of a Sine Wave Voltage
Автономний інвертор струму як джерело синусоїдальної напруги
Authors: ШАВЁЛКИН, А. А.
Keywords: автономний інвертор струму
високовольтний перетворювач частоти
джерело напруги
ключі що замикаються за колом керування
трирівневий релейний регулятор
коефіцієнт гармонік
independent inverter of a current
high-voltage converter of frequency
source of the voltage
gate turnoff switches
three-level relay controller
total harmonic distortion
автономный инвертор тока
высоковольтный преобразователь частоты
источник напряжения
запираемые по цепи управления ключи
трехуровневый релейный регулятор
коэффициент гармоник
Issue Date: 2013
Publisher: ДонНТУ
Citation: Наукові праці Донецького національного технічного університету. Серія "Електротехніка і енергетика". № 1 (14), 2013 р., 358 с.
Abstract: Представлены принципы реализации автономного инвертора тока в режиме источника синусоидального напряжения. Предложено при формировании выходного напряжения инвертора использовать трехуровневые релейные регуляторы, разработан алгоритм управления ключами инвертора. Представлены результаты моделирования инвертора с активным выпрямителем тока на входе при активно-индуктивной нагрузке.
Description: Principles of realization of a mode of a source of a sine wave voltage for the three-phase bridge independent inverter of a current are presented. The scheme of the inverter of a current is executed on gate turn-off switches with unilateral conductivity and output filter on capacitors. The principle of formation of an output voltage of the inverter with use of three-level relay controllers of a voltage is offered. The choice of a working controller is carried out according to the greatest value of a deviation of a voltage of a phase of load from a preset value. It is desirable to use system of control which is astatic for average value of an input current inverter. It is shown, that in view of losses of a voltage in power circuits and a possible voltage reduction of a power link AC the reactive power of the capacitor filter for a nominal mode is no more than 60-65 % from reactive power of the load. The mathematical model of the independent inverter with the active rectifier of a current on the input, which is realizing the offered principles of control, is made. Results of modeling for active-inductive load confirm working capacity of the offered decisions. Value of total harmonic distortion of a voltage is equal (3 - 4) % for frequency of an output voltage of the inverter 50 Hz and for deviation of a voltage from a preset value of 5% is achieve at frequency of switching of switches of the inverter (600 - 1500 Hz). It is shown, that quality of a voltage practically does not depend on value of pulsations of an input current of inverter. It allows reducing inductance of a smoothing reactor in DC link of inverter. Subject of the further researches is development of structure of system of automatic control for the asynchronous electric drive with vector control.
Appears in Collections:2013_Випуск № 1 (14)
Публікації співробітників кафедри ЕАПУ

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