SU134758A1 - Device for controlling the excitation of ac electric machines - Google Patents

Device for controlling the excitation of ac electric machines

Info

Publication number
SU134758A1
SU134758A1 SU661217A SU661217A SU134758A1 SU 134758 A1 SU134758 A1 SU 134758A1 SU 661217 A SU661217 A SU 661217A SU 661217 A SU661217 A SU 661217A SU 134758 A1 SU134758 A1 SU 134758A1
Authority
SU
USSR - Soviet Union
Prior art keywords
voltage
excitation
controlling
phase
electric machines
Prior art date
Application number
SU661217A
Other languages
Russian (ru)
Inventor
Р.Г. Гаспаров
В.С. Моин
Original Assignee
Р.Г. Гаспаров
В.С. Моин
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Р.Г. Гаспаров, В.С. Моин filed Critical Р.Г. Гаспаров
Priority to SU661217A priority Critical patent/SU134758A1/en
Application granted granted Critical
Publication of SU134758A1 publication Critical patent/SU134758A1/en

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  • Measuring Volume Flow (AREA)
  • Control Of Eletrric Generators (AREA)

Description

Известны устройства дл  регулировани  возбуждени  электрнчесю/х машин переменного тока, содержащие импульсный транзисторный усилитель , который работает в режиме переключени  с модул цией ширины импульсов транзисторным ключом, управл емым фазой входного напр жени . Недостатком таких устройств  вл етс  невысока  чувствительность .Devices are known for controlling the excitation of ac / ac machines with a transistor amplifier that operates in switching mode with a pulse width modulated by a transistor switch controlled by the phase of the input voltage. The disadvantage of such devices is low sensitivity.

В описываемом устройстве применен фазовращательный мост, на выход которого включен транзисторный ключ. Мост питаетс  переменным напр жением от объекта регулировани  и управл етс  посто нны.м напр жением измерительного органа.In the described device, a phase-shifting bridge is applied, the output of which includes a transistor switch. The bridge is powered by a variable voltage from the control object and is controlled by a constant voltage of the measuring element.

Такое выполнение устройства позвол ет повысить чувствительноегь прибора.Such an embodiment of the device makes it possible to increase the sensitivity of the device.

На фиг. 1 изображена схема описываемого }стройства: на фиг. 2- эквивалентна  схема транзисторного фазоврашательного моста.FIG. 1 shows the scheme of the device being described}; FIG. 2- equivalent circuit of the transistor phase-bridge.

Напр жение 6,,. сигнала измерительного органа ИО подаетс  на вход транзисторов TI и TZ, составл юпшх одно из плеч транзисторного фазовраш;ательного моста. Пока это напр жение меньше норогового напр жени  отпирани  транзисторов, последние заперты, вследствие чего сопротивление R „., транзисторов (фиг. 2) очень велико и ток, протекаюш;ий по мосту, носит активный характер, а фаза выходного напр жеги  „,,,х совпадает с фазой питающего напр жен ;  U „,,.,„. Flpi дальнейщем повышении входного напр жени  транзисторы постепенно отпираютс , что вызывает падение ,„, и увеличение сдвига фаз между 6,,,,„. и и:,:,„ , который достигает 180°, когда транзисторы полностью открываютс  и R ,,;:, 0.Voltage 6 ,,. The signal of the measuring organ IO is fed to the input of the TI and TZ transistors, making up one of the arms of the transistor phase-shifting bridge. As long as this voltage is less than the normal voltage unlocked transistors, the latter are locked, as a result of which the resistance Rn., Transistors (Fig. 2) is very high, and the current flowing through the bridge is active, and , x coincides with the phase of the supply voltage; U „,,.,„. Flpi further increases the input voltage, and the transistors gradually unlock, causing a drop, " and an increase in phase shift between 6 ,,,, „. and and:,:, „, which reaches 180 ° when the transistors are fully opened and R ,,;:, 0.

Сдвинутое по фазе напр жение U,.,,,, подаетс  на транз сторный ключ, где сравниваетс  с питающим напр жением. При этом на выхо.по к.гпоча по вл ютс  пр моугольные импульсы напр жени , ширина которых пропорциональна сдвигу фаз между 6,.,,„ и U,,,.., фазоврап1ательного моста. Эти ИМПУЛЬСЫ усиливаютс  ИМПУЛЬСНЫМ усилителем иThe phase-shifted voltage U,. ,,,, is supplied to the trans wrench, where it is compared with the supply voltage. At the same time, rectangular voltage pulses appear at the output of the circuit. The width of the voltage pulses is proportional to the phase shift between 6,. ,, „and U ,,, .., phase transition bridge. These PULSES are amplified by a PULSE amplifier and

SU661217A 1960-04-04 1960-04-04 Device for controlling the excitation of ac electric machines SU134758A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU661217A SU134758A1 (en) 1960-04-04 1960-04-04 Device for controlling the excitation of ac electric machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU661217A SU134758A1 (en) 1960-04-04 1960-04-04 Device for controlling the excitation of ac electric machines

Publications (1)

Publication Number Publication Date
SU134758A1 true SU134758A1 (en) 1960-11-30

Family

ID=48291112

Family Applications (1)

Application Number Title Priority Date Filing Date
SU661217A SU134758A1 (en) 1960-04-04 1960-04-04 Device for controlling the excitation of ac electric machines

Country Status (1)

Country Link
SU (1) SU134758A1 (en)

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