Synthesis of a scalar ACS of the valve motor rotational speed for the icebreaker's ERM with a propulsion-steering complex "Azipod"

В статье рассматриваются основные тенденции развития систем судового автоматизированного электропривода с машинами переменного тока. В частности представлены варианты реализации электропривода с использованием частотно управляемых асинхронных двигателей и синхронных двигателей с электромагнитным возбуждением. Предлагается перспективная электромеханическая система на основе вентильного двигателя для ГЭУ ледокола с движительно-рулевым комплексом «Азипод». Целью работы является исключение структурной сложности и повышения функциональных возможностей электропривода за счет применения скалярной САУ частоты вращения вентильного двигателя вместо векторной для ГЭУ. Новизна заключается в использовании подхода и представления вентильного двигателя как объекта регулирования на основе аналогии с коллекторным двигателем постоянного тока при регулировании положения его оси токосъема. В соответствии с этим анализ информационных процессов, связанных с процессами электромеханического преобразования энергии, протекающими в синхронной машине с позиционно-зависимым частотным управлением, и синтез САУ электропривода по принципу подчиненного регулирования базируются на тех подходах, которые широко используются в регулируемых электроприводах постоянного тока, обладающих наилучшими динамическими свойствами. The article discusses the main trends in the development of marine automated electric drive systems with AC machines. In particular, variants of the implementation of an electric drive using frequency-controlled asynchronous motors and synchronous motors with electromagnetic excitation are presented. A promising electromechanical system based on a valve engine for the icebreaker's ERM with the propulsion-steering system Azipod is proposed. The aim of the work is to eliminate the structural complexity and to increase the functionality of the electric drive by using a scalar ACS of the valve motor rotational speed instead of a vector one for the ERM. The novelty lies in the use of the approach and representation of the valve motor as an object of regulation based on the analogy with the collector DC motor when regulating the position of its current collection axis. Thereby, the analysis of information processes related to the processes of electromechanical energy conversion occurring in a synchronous machine with position-dependent frequency control, and the synthesis of an ACS electric drive based on the principle of subordinate regulation are based on those approaches that are widely used in regulated DC electric drives possessing the best dynamic properties.

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Synthesis of a Scalar Automatic Control System of a Valve Engine with Field Control for a Rowing Electric Installation with an Azipod Propulsion and Steering System

Известия высших учебных заведений Электромеханика ◽

10.17213/0136-3360-2021-6-29-35 ◽

2021 ◽

Vol 64 (6) ◽

pp. 29-35

Author(s):

Vitaly Vysotsky ◽

◽

Igor Markov ◽

Yuri Matveev ◽

◽

...

Keyword(s):

Control System ◽

Automatic Control ◽

Automatic Control System ◽

Electric Drive ◽

Structural Complexity ◽

Control Object ◽

Steering System ◽

Synchronous Machine ◽

Object A ◽

Valve Engine

The article deals with the main trends in the development of marine automatic AC electric drive systems. A variant of the implementation of an electric drive using an electromechanical converter of a synchronous machine with electromagnetic field excitation is presented. A promising electric drive system with a valve engine for the icebreaker's with the Azipod propulsion and steering system is proposed. The aim of the work is to eliminate the structural complexity and expand the functional capabilities of the electric drive by using a scalar automatic control system of the frequency of rotation in the two-zone control of the valve motor of the EPS. The novelty lies in the use of the approach and representation of the control object-a valve motor as an analog of a DC collector motor controlled by an armature and by a field. The analysis of control processes is directly related to the processes of electromechanical energy conversion occurring in a synchronous machine.

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Modelling and Analysis of Dynamic Properties of Drive Systems With Gears

Volume 7B: 17th Biennial Conference on Mechanical Vibration and Noise ◽

10.1115/detc99/vib-8362 ◽

1999 ◽

Author(s):

Ctirad Kratochvíl ◽

Vladimír Kotek ◽

Tomáš Březina ◽

Jiří Krejsa

Keyword(s):

Mathematical Models ◽

Dynamic Analysis ◽

Dynamic Properties ◽

Structural Complexity ◽

Design Stage ◽

Drive Systems ◽

Marked Tendency

Abstract Contemporary trends show a marked tendency for solution of problems of dynamic analysis of drive systems as early as the design stage. It shows that during the modelling of complex drive systems it is necessary to respect its structural complexity and therefore it is necessary to make the models of particular drive subsystems first and then to combine it altogether. In the paper authors present some methods of creation of suitable mathematical models of complex drive systems respecting the drive structure. The methods are then applied onto real tasks. Examples are included.

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Research of control systems for lifting and transport mechanisms

Proceedings of the higher educational institutions ENERGY SECTOR PROBLEMS ◽

10.30724/1998-9903-2021-23-3-47-61 ◽

2021 ◽

Vol 23 (3) ◽

pp. 47-61

Author(s):

T. V. Sinyukova ◽

V. N. Meshcheryakov ◽

A. V. Sinyukov

Keyword(s):

Comparative Analysis ◽

Electric Drive ◽

Frequency Control ◽

Frequency Converter ◽

Asynchronous Motor ◽

Point Of View ◽

Asynchronous Motors ◽

Drive Systems ◽

Improved Characteristics ◽

Energy Components

THE PURPOSE. To investigate the existing methods of frequency control and their influence on the characteristics of the asynchronous motor, including the energy parameters. Consider new circuit solutions of the control type under study. Create a mathematical model of each of the methods of frequency control. To analyze the results obtained from the point of view of the behavior of mechanical, electromechanical and energy components. METHODS. When solving this problem, the method of computer simulation modeling, implemented by means of Matlab Simulink, was used. RESULTS. In this paper, various aspects of electric drive systems based on asynchronous motors with the use of cascade switching are studied and described, existing connection schemes for such systems are analyzed, and several new options with improved characteristics are proposed. A comparative analysis of various connection schemes is made, the most interesting results of such analysis are presented, and conclusions are drawn about the future prospects of certain circuit solutions.Electric drive systems were modeled in the Simulink MATLAB environment using software tools to demonstrate the operation parameters of the considered circuits. CONCLUSION. Various schemes for switching on the asynchronous motor in the Simulink Matlab environment were investigated. The results of the study revealed the potential usefulness of using a circuit with a transformer in the rotor circuit, as well as the construction of a multi-motor electric drive with a common transformer and a common frequency converter circuit. The efficiency of parallel connection of rotary circuits of a two-motor electric drive was demonstrated. The methods of returning the sliding energy to the network are also compared, and their effectiveness in a comparative analysis with the operation in the closed-loop rotor mode is demonstrated.

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Designing of Drive Systems in the Aspect of the Desired Spectrum of Operation

Energies ◽

10.3390/en14092562 ◽

2021 ◽

Vol 14 (9) ◽

pp. 2562

Author(s):

Tomasz Dzitkowski ◽

Andrzej Dymarek ◽

Jerzy Margielewicz ◽

Damian Gąska ◽

Lukasz Orzech ◽

...

Keyword(s):

Degrees Of Freedom ◽

Dynamic Properties ◽

Dynamic Parameters ◽

Synthesis Algorithm ◽

Moments Of Inertia ◽

Driving System ◽

Six Degrees Of Freedom ◽

Resonance Frequencies ◽

Drive Systems ◽

Power Component

A method for selecting dynamic parameters and structures of drive systems using the synthesis algorithm is presented. The dynamic parameters of the system with six degrees of freedom, consisting of a power component (motor) and a two-speed gearbox, were determined, based on a formalized methodology. The required gearbox is to work in specific resonance zones, i.e., meet the required dynamic properties such as the required resonance frequencies. In the result of the tests, a series of parameters of the drive system, defining the required dynamic properties such as the resonance and anti-resonance frequencies were recorded. Mass moments of inertia of the wheels and elastic components, contained in the required structure of the driving system, were determined for the selected parameters obtained during the synthesis.

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