A Comparative Analysis of the Efficiency of Three- and Five-Phase Self-Controlled Synchronous Motors

Tereshkin, Vladimir M.; Grishin, Dmitriy A.; Makulov, I. A.

doi:10.3103/s1068371218050103

Cited by 5 publications

(1 citation statement)

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“…However, greater SFR results in higher THD, as discussed before. Therefore, a balance between the value of A and the acceptable level of THD is required [27].…”

Section: Switching Frequency Regulationmentioning

confidence: 99%

Switching Regulation in the Control of 5-Phase Permanent Magnet Synchronous Motor Fed by 3×5 Direct Matrix Converter

Ishaq¹,

Che²,

Ullah³

2021

EJEE

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Matrix converter is an AC-AC direct power converter comprising of an array of bi-directional switches. It does not require an intermediate DC-link and allows sinusoidal output waveforms with varying amplitudes and frequencies. The configuration of these bi-directional switches decides the number of inputs and outputs of the matrix converter. This research uses a direct matrix converter (DMC) as a phase-changing device that can convert a three-phase AC voltage into a 5-phase AC voltage. The DMC is modulated with the model predictive control algorithm. The output of DMC is fed to a five-phase permanent magnet synchronous motor (PMSM). The model predictive current control technique for DMC is carried out by developing a mathematical model of an input filter and PM motor used as a load. The predictive control of DMC results in sinusoidal output current, and it also enables the frequency variation in the output current. This frequency variation is useful in controlling the speed of the motor connected to the load. After controlling the 5-phase motor, the switching frequency regulation is done to observe its effect on the motor's stator current waveforms. Switching frequency regulation helps to limit the unnecessary switching of DMC. We developed a MATLAB-based Simulink model to study PMSM, and detailed results are presented. The results show that switching regulation can significantly reduce the switching frequency without compromising the current waveform quality.

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“…However, greater SFR results in higher THD, as discussed before. Therefore, a balance between the value of A and the acceptable level of THD is required [27].…”

Section: Switching Frequency Regulationmentioning

confidence: 99%

Switching Regulation in the Control of 5-Phase Permanent Magnet Synchronous Motor Fed by 3×5 Direct Matrix Converter

Ishaq¹,

Che²,

Ullah³

2021

EJEE

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Design of fast response electric drive of agricultural objects

Fediakov¹,

Zhuravleva

Kornienko³

2019

IOP Conf. Ser.: Earth Environ. Sci.

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The main stages of synthesis of high-speed agricultural AC electric drives are considered in the article. As the main criterion, the mass ratio of the rotating parts of the motor to the nominal torque can be applied. It is rational to solve the following problems in the article: synthesis and justification of the stages in the methodology for the development of high-speed electric drives; assessment of the possibilities of each of the design stages; comparison of the developed electric drives’ characteristics according to the original method with existing objects. Proposed the concept of synthesis drives that implement a limit on the operation speed and handling ability, which from the position of a systematic approach contains a number of stages: synthesis of generalized mathematical models of the object, taking into account a detailed description of the system implementing the limit operating modes; assessment of possibilities of the control object; parametric optimization of electrotechnical complex with the position of the marginal characteristics; selection of simplified mathematical models of the electric drive; synthesis of structures and control systems that realize the limit operating modes; search phase trajectories of motion of the system “Electric drive - working body” implementing extreme modes of operation. The proposed algorithm is a series of interrelated stages, where in each stage can be done the clarification on the results of second stage, for example, detailing the requirements of the technological process at the last stage of the search for phase trajectories provides for a return to the parametric optimization of the agricultural objects electric drive.

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