公开(公告)号：US3556668A

公开(公告)日：1971-01-19

申请号：US3556668D

申请日：1968-07-11

Applicant: LE METALLICHESKY Z IM XXII SIE

Inventor： MARBUKH VENIAMIN ANATOLIEVICH ,  LYCHAK VENIAMIN SAMUILOVICH ,  PAIKIN LAZAR ILICH ,  MATVEEV VLADIMIR ALEXEEVICH ,  SEMENOV VASILY VASILIEVICH ,  STEPURA EMIL FEDOROVICH ,  FEDOROV VASILY NIKOLAEVICH

IPC: F03B15/12 ,  G05D13/00 ,  H02P23/00 ,  F15B13/16 ,  H02P5/00

CPC classification number: G05D13/00 ,  F03B15/12 ,  H02P23/16 ,  Y02E10/226

Abstract: AN ELECTROHYDRAULIC SPEED CONTROLLER FOR A HYDROTURBINE COMPRISES AN ELECTRICAL MEASURING UNIT COUPLED TO A MAGNETIC AMPLIFIER IN TURN COUPLED TO A HYDROMECHANICAL ACTUATOR VIA AN ELECTROHYDRAULIC CONVERTER. THE ACTUATOR INCLUDES A MAIN SERVOMECHANISM AND AN AUXILIARY SERVOMECHANISM BOTH ADAPTED TO VARY THE DEGREE OF OPENING OF THE GATE APPARATUS OF THE HYDROTURBINE. A PROPORTIONAL FEEDBACK AND A PI-FEEDBACK ARE CONNECTED TO THE MAIN SERVOMECHANISM, AND THE PI-FEEDBACK INCORPORATES A PASSIVE CORRECTIVE NETWORK CONNECTED IN SERIES WITH THE CON-

TROL WINDINGS OF THE MAGNETIC AMPLIFIER. THE PASSIVE CORRECTIVE NETWORK INCLUDES A DIFFERENTIATING SECTION, AN INTEGRATING SECTION AND ANOTHER DIFFERENTIATING SECTION CONNECTED IN SERIES IN THE ABOVE ORDER, ALL SECTIONS INCLUDING RC ELEMENTS.