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A pmsm pre-synchronization coaxial operation control method and system

A technology of operation control and pre-synchronization, applied in control system, vector control system, control generator, etc., can solve problems such as speed difference and motor speed not very matching, so as to improve control precision, ensure accuracy, and improve system performance Effect

Active Publication Date: 2019-10-01
SHANDONG UNIV
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Problems solved by technology

[0009] like figure 2 As shown, since the working speed of the vortex machine load is higher than the speed of the fan, in the simulation system, although the speed of the motor is increased, a speed-up gearbox is added between the two permanent magnet synchronous motors to increase the speed of the motor. Therefore, there is a proportional relationship between the two motors. During the pre-synchronization process, the motor speeds will not match very well, and there will be a speed difference.

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  • A pmsm pre-synchronization coaxial operation control method and system

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[0040] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0041] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof.

[0042] The predictive control of permanent magnet synchronous motor can improve the dynamics and robustness of its...

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Abstract

The invention discloses a PMSM pre-synchronization coaxial operation control method. The method is applicable to a micro-type compressed air energy storage system. The micro-type compressed air energystorage system comprises a first-level PMSM and a second-level PMSM connected in series, and a gear box and a clutch are connected in sequence in series between the first-level PMSM and the second-level PMSM. The method includes: step1, the first-level PMSM operates under the control of a rotating speed, and the rotating speed and the turning of one side of the clutch can be obtained according toa transformation ratio of the rotating speed of the first PMSM to the gear box; and step2, the rotating speed of the clutch is matched under the pre-synchronization control of the second-level PMSM,and the clutch is switched on to realize coaxial operation of the first-level PMSM and the second-level PMSM.

Description

technical field [0001] The invention belongs to the field of PMSM coaxial rotational speed control of a miniature compressed air energy storage system, and in particular relates to a PMSM pre-synchronized coaxial operation control method and system. Background technique [0002] Energy storage is one of the most effective means to smooth the fluctuation and intermittency of wind power generation system and improve the quality of power output. Compared with other energy storage methods, compressed air energy storage is the only energy storage method whose energy storage capacity is comparable to that of pumped water storage, and has the advantages of easy detection, precise control and low cost, and has attracted worldwide attention. . On the basis of summarizing the characteristics of the existing compressed air energy storage structure, Shandong University proposed a new structure of hybrid coupled compressed air energy storage system based on the flexible switching of ele...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P6/04H02P21/22
Inventor 李珂王运良张承慧叶保森马昕
Owner SHANDONG UNIV
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