Textbook. M. : INFRA-M, 2007. 208 s. The general principles of construction and structure of control systems of electric drive are considered. The description of elements and devices of control circuits is given, as well as open and closed circuits of electric drives with DC and AC engines . are considered. The questions of application of electric drives in systems of automation of technological processes. The basic concepts and methods of calculation and increase of reliability of electric drives are given. For students of secondary vocational education institutions . Foreword by .