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APF voltage space vector hysteresis control method

A voltage space vector, hysteresis control technology, applied in electrical components, circuit devices, AC network circuits, etc., can solve the problems of low precision and slow dynamic response, and reduce switching times, reduce switching times, and reduce switching losses. Effect

Pending Publication Date: 2021-12-28
费莱(浙江)科技有限公司
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Problems solved by technology

However, this method has the disadvantages of slow dynamic response and low precision.

Method used

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  • APF voltage space vector hysteresis control method
  • APF voltage space vector hysteresis control method
  • APF voltage space vector hysteresis control method

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Embodiment Construction

[0075] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0076] see Figure 1-Figure 15 , the present invention provides a kind of technical scheme: a kind of APF voltage space vector hysteresis control method, comprises the following method steps:

[0077] S1. Establish APF and merge into the grid, use the compensation current to offset the harmonic current generated by the load, and make the grid current only contain the sinusoidal fundamental wave component in the load current, eliminating the interference of the...

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Abstract

The invention discloses an APF voltage space vector hysteresis control method. The method comprises the following steps of S1, establishing an APF and merging a power grid, S2, conducting hysteresis current tracking control, S3, conducting voltage space vector hysteresis control, wherein control rule and vector selection, deltaI and U*region judgment and double hysteresis control are included, and S4, performing simulation verification. The invention provides an APF voltage space vector hysteresis method suitable for a three-phase three-wire system. The method inherits the advantage of good real-time performance of a traditional hysteresis control method, the switching frequency is greatly reduced, and the switching loss is reduced. Compared with a traditional hysteresis control method, the method has more obvious advantages in the aspects of current tracking control precision and harmonic compensation.

Description

technical field [0001] The invention belongs to the technical field of active power filters, in particular to an APF voltage space vector hysteresis control method. Background technique [0002] Hysteresis tracking control is widely used in the current control strategy of APF because of its fast response, easy software and hardware implementation, strong stability and real-time performance. In the three-phase three-wire APF system, the traditional hysteresis current tracking control performs independent control for each phase bridge arm. Although the response speed is fast, it does not consider the mutual influence between the three-phase bridge arms, which may cause redundant control during the control process. The switching action of the device causes the switching frequency of the device to be too high and the switching loss is too large. The voltage space vector control method uses the corresponding relationship between the switching action of the inverter and the volta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/01H02M7/5387H02M7/5395H02M1/088
CPCH02J3/01H02M7/53875H02M7/5395H02M1/088H02J2203/20Y02E40/20
Inventor 李稳良
Owner 费莱(浙江)科技有限公司