SU964911A1

SU964911A1 - Ac-to-dc converter

Info

Publication number: SU964911A1
Application number: SU772478270A
Authority: SU
Inventors: Вил Аврамович Городецкий; Валерий Николаевич Павлов; Олег Александрович Неуймин; Владимир Николаевич Сидельников
Original assignee: Научно-Производственное Объединение "Энергоцветмет"
Priority date: 1977-04-20
Filing date: 1977-04-20
Publication date: 1982-10-07

Description

(5) ПРЕОБРАЗОВАТЕЛЬ ПЕРЕМЕННОГО ТОКА(5) AC VOLTAGE CONVERTER

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i Изобретение относитс к электротехнике и может найти применение в мощных системах преобразовани электрической энергии..i The invention relates to electrical engineering and can be used in high-power electrical energy conversion systems ..

Известен преобразователь, который содержит соединенные параллельно по выходу .выпр мители, каждый из которых имеет ре.гул тор тока, вход которого подключен к выходу узла суммировани сигналов, и датчик тока, один выход которого подсоединен с соответствующему входу блока сравнени сигналов, а второй - к входу узла суммировани , причем выходы блока сравнени сигналов подключены к входам соответствующих узлов суммировани сигналов ijНаиболее близок к изобретению преобразователь переменного тока в посто нный , состо щий из двух соединенных параллельно по выходу выпр мителей , каждый из которых снабжен фазосмещающим элементом, выход которого подключен к управл ющему входуA converter is known which contains output relays connected in parallel on the output, each of which has a current controller, whose input is connected to the output of the signal summation node, and a current sensor, one output of which is connected to the corresponding input of the signal comparison unit and the second to the input of the summation node, with the outputs of the signal comparison unit being connected to the inputs of the corresponding summing nodes of the signals ij. An AC / DC converter is the closest to the invention; GOVERNMENTAL parallel output rectifiers, each of which is provided with a phase-shifting element whose output is connected to the control input

выпр мител , и датчиком тока, подключенным одним своим, выходом к соответствующему входу блока сравнени . сигналов, а вторым выходом - к входу элемента суммировани , третий вход которого подсоединен к выходу блока задани , а выход - к входу регул тора тока 2j.the rectifier, and a current sensor connected by one of its own, to the output to the corresponding input of the comparison unit. signals, and the second output to the input of the summation element, the third input of which is connected to the output of the task block, and the output to the input of the current regulator 2j.

Недостатком известного устройства вл етс необходимость наличи двух (по числу выпр мителей) ре10 гул торов тока,что приводит к его усложнению, снижению быстродействи и ухудшению распределени тока между выпр мител ми.A disadvantage of the known device is the necessity of having two (by the number of rectifiers) current controllers, which leads to its complication, slowing down and deterioration of the current distribution between the rectifiers.

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Цель изобрет(ени - улучшение распределени тока между выпр мител ми.The purpose of the invention (cn is to improve the distribution of current between rectifiers.

Поставленна цель достигаетс тем, что в известном устройстве эыход регул тора тока подключен к The goal is achieved by the fact that in a known device the current controller output is connected to

Claims

20 to the third input of the signal comparison unit, each of the outputs of which is connected to the input of the corresponding phase-shifting element. 3 96 The drawing shows a block diagram of the proposed device, where denoted by the positions 1 and 2 are rectifiers, 3 and - phase shifting elements, 5 and 6 - current sensors, 7 and 8 current shunts, 9 current regulator, 10 - signal comparison unit , 11 summation element, 12 - power supply transformer, 13 - load, T task block. The device works as follows. With equal currents of the rectifiers 1 and 2, the phase-shifting elements 3 and L form control signals with the same phase angles, and the unbalance signal between the output voltages of the current sensors 5 and 6 is zero. In case the current value of the issue. Simulator 1 exceeds the value of the current of the rectifier 2, at the outputs of the comparison unit 10 there appear signals, under the action of which the phase-shifting element 3 increases, and the phase-shifting element k reduces the angles of adjustment by the rectifiers. The processing of the current imbalance signal of the proposed device is done without inertia, since the signal imbalance acts directly on the phase-shifting elements, a current regulator 9 which mines only disturbances from the load 13 through the summation element 11. Claims of the invention AC-to-DC converter consisting of two parallel-connected rectifiers having each phase-shifting element, the output of which is connected to the control input of the rectifier, and a current sensor connected by one. its output to the corresponding of the two inputs of the signal comparison unit, and the other to the corresponding of the two inputs of the summation element, the third input of which is connected to the output of the task unit, and the output to the input of the current regulator, in order to improve the current distribution between rectifiers, the output of the current regulator is connected to the third input of the signal comparison unit, each of the outputs of which is connected to the input of the corresponding phase-shifting element. Sources of information taken into account during the examination 1. USSR author's certificate on application no.

2. The patent of PNR # 58366 67/10, 1970.

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