scholarly journals Energy-efficient control of a multi-section supercapacitor power supply of an electric drive

2018 ◽  
Vol 161 ◽  
pp. 02002 ◽  
Author(s):  
Vladimir Mozzhechkov
Keyword(s):  
High Voltage ◽  
Electric Drive ◽  
Power Supply ◽  
Energy Efficient ◽  
Mathematical Formulation ◽  
Power Source ◽  
Power Line ◽  
Control Law ◽  
Control Laws ◽  
Efficient Control

A method for synthesizing the control laws of a multi-section supercapacitor power supply of an electric drive is developed. The synthesized control law for an electric drive realizes the prescribed motion and minimizes the required capacitance of the power source. It is achieved through optimal disconnection and connection to the power line of the drive at designated times of one of the power supply sections. Reduction of the required capacitance of the power supply is achieved through a fuller discharge of some of its sections in motion conditions requiring a low level of electrical voltage and saving high voltage in other sections for the respective motion conditions. A mathematical formulation of the problem and a method of its solution is proposed. An example of the implementation of the proposed method is considered.

scholarly journals Adapter-Transceiver for HF Equipment PLC Technology

2020 ◽  
Vol 20 (3) ◽  
pp. 97-109
Keyword(s):  
High Voltage ◽  
Power Supply ◽  
Low Voltage ◽  
Radio Channel ◽  
Power Line ◽  
Ferrite Core ◽  
Information Signal ◽  
Fire Alarm System ◽  
Low Voltage Circuits ◽  
Easy Integration

The paper analyses the features of PLC technologies and describes the circuitry solutions for HF equipment adapters used and their operation modes. It also proposes a new type of transceiver adapters based on a new construction principle that implements a magnetoelectric effect in the structure of a composite. One of the main components of the proposed adapters, which actually translates the HF information signal into the phase wires of the power line, is a ferrite core. The physical effects underlying the operation of the proposed transceiver adapter are analyzed. The main distinguishing feature of the proposed adapter is the absence of transformer and galvanic connections between the high-voltage power line of the power supply network and low-voltage information circuits, which ensures that the effect of the operational high voltage of the power supply line on the low-voltage circuits of HF equipment is blocked. This allows for an easy integration of the proposed version of the adapter-transceiver into standard HF equipment for PLC technologies, boosting the level of its function. The developed new types of adapter-transmitter and adapter-receiver were experimentally tested as part of an experimental fire alarm system, which uses two types of transmission channels: based on wireless technologies employing a radio channel and a PLC technologies-based one.

scholarly journals Field oriented control of PMSM drive with backup power supply

2021 ◽  
Vol 34 (04) ◽  
pp. 1282-1289
Author(s):  
Maxim Bobrov ◽  
Anatoly Shashunkin
Keyword(s):  
Electric Drive ◽  
Power Supply ◽  
Power Supply System ◽  
Operation Mode ◽  
Power Source ◽  
Supply System ◽  
Voltage Source ◽  
Field Oriented Control ◽  
Permanent Magnet Synchronous Machine ◽  
Switching System

The primary purpose of the article is to examine the field oriented control system of permanent magnet synchronous machine (PMSM) electric drive with backup power supply. Authors propose to use bi-directional DC-DC converter to ensure the «hot» backup operation mode in case of grid fault. The change-over switching system, which provide transfer of voltage-source inverter (VSI) from DC link to the backup power source is considered. The presented system provides a good dynamic transient process; the results are confirmed by simulation in Psim software. Moreover, based on the results acquired, an electric drive based on PMSM with field oriented control and a backup power supply system from the battery via a bi-directional DC-DC converter is capable of operating according to the principles of «hot» backup.

Development of Floating Power Supply for Measurement System of High Voltage Power Line

2003 ◽  
Vol 123 (6) ◽  
pp. 754-761
Author(s):  
Oota Ichiro ◽  
Nishiyama Eiji ◽  
Matsuda Toyonori ◽  
Kawano Mitsunori ◽  
Kuwanami Kenshi
Keyword(s):  
High Voltage ◽  
Measurement System ◽  
Power Supply ◽  
Power Line

scholarly journals ANALYTICAL SYNTHESIS OF FORCED PULSE ELECTRONIC DRIVE CONTROL OF A TRACKING SYSTEM

2018 ◽  
pp. 16-20
Author(s):  
A. S. Abufanas ◽  
A. A. Lobaty ◽  
Y. F. Yacina
Keyword(s):  
Unmanned Aerial Vehicles ◽  
Electric Drive ◽  
Duty Cycle ◽  
Power Source ◽  
Control Law ◽  
Tracking Systems ◽  
Constant Amplitude ◽  
Dc Motors ◽  
Aerial Vehicles ◽  
Analytical Synthesis

The problem of analytical synthesis of a control signal by a linear dynamical system is considered. As an optimization criterion, it is proposed to consider the transition time of the system from the initial state to a given final state. This type of control is called forced, providing the maximum system speed. The principle of solving this problem is considered on the basis of application of uncertain Lagrange multipliers and the Pontryagin maximum principle. Expressions are obtained for the matrix of transitions of the system and the control signal in a vector form.As an example, the electric drive described by the widespread second-order mathematical model is considered to evaluate the efficiency of the proposed method. Qualitative illustrations of the operability of the proposed approach, obtained by modeling in the Mathcad environment, and quantitative characteristics of the change in the input and output signals of the hypothetical control system are presented. It is shown that the use of forced control does not lead to the output of variables characterizing the state of the system, beyond the limits of admissible values.The use of forced control makes it possible to synthesize the control law in the form of a sequence of rectangular pulses of constant amplitude determined by the power source, variable duty cycle and polarity. This approach can be used for the control of DC-type DC motors used in various tracking systems used on unmanned aerial vehicles. Key words: forced control, target function, electric drive, pulse train. The use of forced control makes it possible to synthesize the control law in the form of a sequence of rectangular pulses of constant amplitude determined by the power source, variable duty cycle and polarity. This approach can be used for the control of DC-type DC motors used in various tracking systems used on unmanned aerial vehicles.

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