Development of a Differential Electric Drive of a Starter-Generator based on a DC Motor

The requirements for electrical components of medium-power vehicles are considered. The parameters of starters and generators used on medium-power vehicles are given. Possible variants of differential electric drives are presented. The options for the implementation of a starter-generator based on a differential electric drive are presented. The usage of a planetary mechanism with control elements for changing kinematic circuits in a differential electric drive has been substantiated. The kinematic switching circuits providing the main op-erating modes of the starter-generator are considered. The advantages of a field regulated reluctance machine as a differential electric drive are given. A mathematical description of the planetary gear is given. The transfer functions of the elements of the differential electric drive are shown. A block diagram of a differential electric drive of a starter-generator based on a field regulated reluctance machine excitation has been developed. The results of the analysis of the frequency characteristics of the contours of the armature current, excitation current, torque and speed, showing the efficiency and applicability of the mathematical model, are presented

Download Full-text

Comparative analysis of thyristor schemes of marine DC motor control

VESTNIK OF ASTRAKHAN STATE TECHNICAL UNIVERSITY SERIES MARINE ENGINEERING AND TECHNOLOGIES ◽

10.24143/2073-1574-2020-2-111-119 ◽

2020 ◽

Vol 2020 (2) ◽

pp. 111-119

Author(s):

Sergey Vladimirovich Golovko ◽

Artem Vladislavovich D'yachenko ◽

Nickolay Gennadievich Romanenko

Keyword(s):

Motor Control ◽

Electric Drive ◽

Single Phase ◽

Speed Control ◽

Dc Motor ◽

Control Methods ◽

Dc Motors ◽

Reverse Converter ◽

Three Phase ◽

Dc Motor Control

The article considers the problem of the DC motors control that are often used in many electric drive systems. Due to the progress of industrial electronics and technology it has become possible to develop more efficient motor control circuits. The conventional speed control methods commit power losses in the system, which can be minimized by using the power electronics strategy. There is considered the thyristor control of DC motors of the ship electric drive. The DC motor control systems are described and simulation models in the MATLAB Simulink program are presented. The thyristor methods for controlling a DC motor speed are listed: single-phase semi-controlled converter (for motors with power up to 15 kW); single-phase drive with a controlled converter (available to operate in two quadrants); three-phase semi-controlled converter; three-phase controlled converter; single-phase reverse converter realized by connecting two single-phase converters (ensuring multi-mode operation); three-phase reverse converter realized as a single-phase converter. The mechanical characteristic of a DC motor was illustrated when the voltage supplied to the armature winding changed. It has been stated that control of the armature voltage is more favorable for speeds below the rated speed; flow control is preferable for speeds above the nominal speed. It has been inferred that speed control by means of power electronics devices provides large energy savings, in contrast to the traditional speed control methods, since the traditional methods experience significant energy losses.

Download Full-text