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Control method and device for three-phase four-quadrant rectifier

A four-quadrant rectifier and control method technology, which is applied in the output power conversion device, the conversion of AC power input to DC power output, electrical components, etc., can solve overcurrent faults, large instantaneous current stress of power devices, and affect system reliability. and other problems, to achieve the effect of cost saving, low manufacturing cost and small size

Active Publication Date: 2022-02-08
CRRC QINGDAO SIFANG ROLLING STOCK RES INST
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  • Claims
  • Application Information

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Problems solved by technology

[0005] Embodiments of the present disclosure provide a control method and device for a three-phase four-quadrant rectifier to solve the problem of overshoot current generated at the moment of start-up of the rectifier in the prior art, so that the power device is subjected to a large instantaneous current stress, resulting in an overcurrent fault and affecting Technical Issues of System Reliability

Method used

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  • Control method and device for three-phase four-quadrant rectifier
  • Control method and device for three-phase four-quadrant rectifier
  • Control method and device for three-phase four-quadrant rectifier

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Embodiment Construction

[0031] In order to more detailed understanding of the characteristics and technical content of the present disclosure, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the appended claims. In the following technical description, it is contemplated to provide a plurality of details to provide sufficient understanding of the disclosed embodiments. However, one or more embodiments can still be implemented without these details. In other cases, in order to simplify the drawings, well-known structures and devices can simplify the display.

[0032] In the present disclosure, the three-phase input voltage includes: the first phase, the second phase, and the third phase, or may be a phase, B phase, and C phase.

[0033] figure 1 A control method flow of the three-phase four-like restriction rectifier provided in the present disclosure embodiment. like figure 1 As shown, the present disclosure provides a control method of ...

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Abstract

The present application relates to a control method for a three-phase four-quadrant rectifier, including: a phase-locking angle acquisition step; a driving pulse blocking step, which is used to block the driving pulse of any phase bridge arm according to the phase-locking angle; and, a driving pulse opening step , which is used to turn on the drive pulse of any phase bridge arm according to the bus voltage value and phase lock angle. It can completely suppress the overshoot current generated at the input end of the three-phase rectifier at the moment of startup, and realize zero-input surge current startup. The application also discloses a control device for a three-phase four-quadrant rectifier.

Description

Technical field [0001] The present application relates to the field of electrical control technology, and more particularly to a three-phase four-like restricted rectifier control method and device. Background technique [0002] The direct current control method based on the coordinate transformation has the advantages of high control precision, fast adjustment speed, and is widely used in the control of three-phase pulse width modulation (PWM) rectifier. [0003] During the process of implementing the present disclosure, there is a problem in the discovery related art as the problem: the proportional Integral Controller (PI) based on the direct current control method of the coordinate transformation, can cause the rectifier to start instantaneously generating overflow current Make power devices to withstand larger instantaneous current stress, produce overcurrent faults, affect the reliability of the system, need to provide a more reliable solution. Inventive content [0004] I...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M7/219H02M7/217H02M1/36H02M1/32
CPCH02M7/219H02M7/2173H02M1/36H02M1/32
Inventor 胡冰崔晓光张勋邵春伟咸粤飞袁超谢峥赵栋李泽元张利军赵许强张家明侯运昌
Owner CRRC QINGDAO SIFANG ROLLING STOCK RES INST
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