scholarly journals CALCULATION AND DESIGN OF A ROBUST SPEED CONTROLLER OF A FREQUENCY-CONTROLLED INDUCTION ELECTRIC DRIVE

2020 ◽  
Vol 0 (3) ◽  
pp. 31-36
Author(s):  
N. J. Khlopenko
Keyword(s):  
Electric Drive ◽  
Speed Controller ◽  
Induction Electric Drive

scholarly journals Energy saving system of cascade variable frequency induction electric drive

2019 ◽  
Vol 124 ◽  
pp. 01037 ◽  
Author(s):  
V. N. Meshcheryakov ◽  
D. V. Lastochkin ◽  
Z.M. Shakurova ◽  
S. Valtchev
Keyword(s):  
Energy Saving ◽  
Electric Drive ◽  
Block Diagram ◽  
Electrical Circuit ◽  
Variable Frequency ◽  
Variable Frequency Drive ◽  
Stator Current ◽  
Static Mechanical ◽  
Saving Mode ◽  
Induction Electric Drive

This paper discusses the wound rotor induction motor and variable-frequency drive (VFD) that regulates the stator voltage frequency. The stator and rotor windings are connected to a common electrical circuit. The slip energy of the motor goes to the DC link and feeds the stator winding of the motor. The block diagram of the electric drive, the equivalent circuit and the basic characteristic of the cascade VFD are considered. It is shown that the energy-saving mode with a minimum ratio “stator current/torque” is achieved at an angle between vectors of the stator current and the excitation current at the level of 45 degrees. The experimental static mechanical characteristics of the electric drive were obtained. These characteristics provide a limitation of the starting torque.

scholarly journals A Buffer Power Source Based on a Supercapacitor for Starting an Induction Motor under Load

Energies ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 4769
Author(s):  
Ruslan Saifulin ◽  
Tomasz Pajchrowski ◽  
Iosiff Breido
Keyword(s):  
Electric Drive ◽  
Voltage Drop ◽  
Electric Energy ◽  
Power Source ◽  
Two Phase ◽  
Industrial Networks ◽  
Start Up ◽  
Buffer Power ◽  
Three Phase ◽  
Induction Electric Drive

In the paper, a model of a three-phase frequency-controlled induction electric drive has been developed in Simulink Matlab 2019 (MathWorks, Natick, MA, USA). This model is mathematically converted into a two-phase model by transforming equations. It is proposed to compensate the voltage drop in the power system during start-up operation under load by using supercapacitors as a buffer power source. A block of supercapacitors was calculated. Simulation modeling was performed at a different voltage than the network. The diagrams of the transient processes occurring in the electric drive when the power supply is changed were prepared. It was found that such a principle of implementing an additional source of electric energy allows to start induction electric drives in areas remote from industrial networks without significantly affecting their static and dynamic characteristics.

scholarly journals Provision of High-efficient Milling Methods Using a PMSM Electric Drive with a Controlled Information-Measuring System

2020 ◽  
Vol 178 ◽  
pp. 01025
Author(s):  
Sergey Ambrosimov ◽  
Victor Meshcheryakov ◽  
Igor Ivshyn
Keyword(s):  
Electric Drive ◽  
Permanent Magnet Synchronous Motor ◽  
Measuring System ◽  
Cnc Machines ◽  
Electric Drives ◽  
Speed Controller ◽  
High Efficient ◽  
Information Measuring System ◽  
Comparative Results ◽  
Vector Control System

The article presents new highly effective methods of milling shaped surfaces, which are implemented on four-and five-coordinate CNC machines. For their implementation, three simultaneously coordinated movements of the machine’s organs are used. To implement the proposed milling methods on CNC machines, an electric drive is proposed, built on the basis of a Permanent Magnet Synchronous Motor (PMSM) with a vector control system with a proportional P-speed controller. For this purpose, an ecstatic control information and measurement system with zero static error is proposed. Comparative results of mathematical modeling of transient processes in electric drives with the standard and proposed control systems are presented.

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