PR and PI controller parameter coordination optimization design method of inverter

A technology of parameter design and design method, applied in the field of power system, to achieve the effect of reducing cost, enhancing dynamic and steady-state performance, and stabilizing and effective control

Inactive Publication Date: 2016-10-26
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0006] The existing invention patents seldom mention the parameter design method of the inverter controller, and there are fewer related patents for the collaborative optimization design of the parameters of the double-closed-loop PR and PI controllers

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  • PR and PI controller parameter coordination optimization design method of inverter
  • PR and PI controller parameter coordination optimization design method of inverter
  • PR and PI controller parameter coordination optimization design method of inverter

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Embodiment Construction

[0028] Below in conjunction with accompanying drawing, the implementation method of the present invention is described in detail: this implementation method is carried out under the condition taking the technical scheme of the present invention as a premise, has provided detailed implementation mode and concrete operation process, but protection scope of the present invention does not Limited to the following examples.

[0029] Such as figure 1 Shown is the inverter power conversion circuit topology. This topology connects the inverter and the load through the LCL filter. The inverter is composed of three-phase bridge arms. The trigger signal is connected to the gate position of the IGBT or MOS tube device connected in series in each sub-module to act as a break switch. effect. The trigger signal is generated by the PWM module, which not only plays the role of modulation, but also plays the role of closed-loop feedback control. The voltage and current loop is controlled and...

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Abstract

The invention brings forward a PR (proportional resonant) design method and a PI (proportional integral) controller design method for an inverter topology voltage current double-closed-loop system. According to the PR controller parameter design method, through given amplitude and a phase margin condition, a parameter variation scope satisfying a current transformer application requirement can be obtained through derivation. According to the PI controller parameter design method, through independent parameter selection and hybrid parameter selection modes, rapid response and control stability of system optimization can be realized. According to the invention, the parameter design methods can help to realize programmed parameter design, rapidly and efficiently complete system stability control, improves system stable performance, at the same time, can adjust the response speed and the control precision according to actual demands of application occasions, and satisfies the on-load high-quality power supply requirement of an inverter typology.

Description

technical field [0001] The invention relates to an inverter double-closed-loop PR and PI controller parameter cooperative optimization design method in the field of electric power system. The voltage and current loop is controlled and adjusted by a PI controller, and the voltage loop is bypassed and paralleled with a PR controller to suppress voltage harmonics. Background technique [0002] In recent years, with the increasingly serious problems of energy crisis and environmental pollution, countries all over the world are striving to find energy transmission structures with small size, light weight, high efficiency, and clean and pollution-free. Due to the development and application of fully-controlled power electronic devices, inverter-based DC transmission technology has attracted much attention. Among them, the high-quality output voltage of DC transmission, better electromagnetic compatibility characteristics and high-voltage and high-power applications are more widel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00H02J3/01G06Q50/06H02M7/5387
CPCG06Q50/06H02J3/00H02J3/01H02M7/5387Y02B70/10Y02E40/40
Inventor 韩杨赵玉龙陈浩杨平熊静琪
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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