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A finite switch state model predictive control method and device

A technology of model predictive control and switching state, which is applied in the direction of output power conversion device, electrical components, single-network parallel feeding arrangement, etc., to achieve the effect of reducing switching loss and improving efficiency

Active Publication Date: 2017-12-15
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In view of this, the present invention provides a finite switch state model predictive control method and device to overcome the lack of a finite switch state model predictive control method in the prior art that can effectively reduce multi-level three-phase grid-connected inverters. switch loss problem

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  • A finite switch state model predictive control method and device
  • A finite switch state model predictive control method and device
  • A finite switch state model predictive control method and device

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Embodiment Construction

[0039] In order to clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention, it is obvious that the described embodiments are only some of the embodiments of the present invention, not all of them. 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.

[0040] The terms "first", "second" and the like in the description and claims of the present invention and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. It should be understood that the terms used in this way can be interchanged under appropriate circumstances, and this is merely a description of the manner in which objects with the same attribute are descri...

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Abstract

The invention discloses a limited switch state model prediction control method applied to a multi-level three-phase grid-connected inverter, comprising the steps of: when the absolute value of the maximum value of the three-phase output current of the inverter is greater than the absolute value of the minimum value, connecting the phase corresponding to the maximum value of output reference voltages with the DC bus anode of the inverter; and when the absolute value of the maximum value of the three-phase output current of the inverter is not greater than the absolute value of the minimum value, connecting the phase corresponding to the minimum value of output reference voltages with the DC bus cathode of the inverter, thereby guaranteeing that the inverter stops opening or closing during the period of the maximum or minimum output current of the inverter, accordingly substantially reducing inverter switch loss, and improving inverter efficiency. The invention also discloses a limited switch state model prediction control device.

Description

technical field [0001] The present invention relates to the technical field of model predictive control, and more specifically relates to a method and device for model predictive control of finite switch states. Background technique [0002] In recent years, with the development of DSP (Digital Signal Processing, digital signal processing) and FPGA (Field-Programmable Gate Array, Field Programmable Gate Array) technology, finite switch state model predictive control has been widely used in power electronic converters. Applications. [0003] The finite switch state model predictive control uses an objective function to evaluate the prediction results of each behavior (power electronic switch combination), and selects the switch combination that can meet the minimum objective function to realize the control of the power electronic converter. [0004] Adding different items to the objective function of finite switch state model predictive control can achieve different control ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M7/483H02M7/487H02M7/5387H02J3/38
Inventor 杨勇樊明迪谢门喜何立群朱忠奎
Owner SUZHOU UNIV