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A Signal Calibration Method of 100a Fully Digital Active Power Filter

A power filter, all-digital technology, applied in the field of signal calibration of 100A full-digital active power filter, to achieve the effect of easy implementation, small memory occupation, and improved compensation accuracy

Inactive Publication Date: 2017-11-14
CENT RES INST OF TIANJIN BENEFO MECHANICAL EQUIP GRP CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

The current national standard requires that when the load current is not less than 20%, the APF compensation rate should not be less than 85%. However, in the actual working conditions on site, few domestic manufacturers can achieve

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  • A Signal Calibration Method of 100a Fully Digital Active Power Filter
  • A Signal Calibration Method of 100a Fully Digital Active Power Filter
  • A Signal Calibration Method of 100a Fully Digital Active Power Filter

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Embodiment Construction

[0047] In order to further understand the invention content, characteristics and effects of the present invention, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:

[0048] see figure 1 with figure 2 , a signal calibration method for a 100A fully digital active power filter, comprising the steps of:

[0049] Step 101, signal acquisition: signal acquisition includes acquisition of three-phase voltage (UA, UB, UC), DC side voltage (UDC), load current (IAL, IBL, ICL) and the current (IAF) that active power filter sends , IBF, ICF, I0F);

[0050] Step 102, performing analog-to-digital conversion on the signal collected in step 101, and then sending it to a digital signal processor;

[0051] Step 103. Send current calibration, load current calibration, AC voltage calibration, and DC side voltage calibration to the active power filter respectively; wherein:

[0052] The calibration of the current sent by t...

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Abstract

The invention discloses a signal calibration method for a 100A fully digital active power filter, which includes the following steps: Step 101. Signal collection: the signal collection includes collecting three-phase voltages (UA, UB, UC), DC side voltage (UDC), the load current (IAL, IBL, ICL) and the current sent by the active power filter (IAF, IBF, ICF, I0F); Step 102, convert the signals collected in step 101 to analog-to-digital conversion, and then send To the digital signal processor; Step 103, send out current calibration, load current calibration, AC voltage calibration, and DC side voltage calibration to the active power filter respectively; this calibration method can improve the 100A fully digital active power The compensation accuracy of the filter can meet the requirements of national standards. At the same time, the calibration method is simple, easy to implement, and occupies a small memory, which lays a foundation for improving the system compensation rate.

Description

technical field [0001] The invention relates to the technical field of active filters, in particular to a signal calibration method for a 100A fully digital active power filter. Background technique [0002] With the development of power electronics technology, active power filter (Active Power Filter, APF) has become a hot research topic, and its application is becoming more and more extensive, showing the trend of modularization, miniaturization and digitalization. The current national standard requires that when the load current is not less than 20%, the APF compensation rate should not be less than 85%. However, in the actual working conditions on site, few domestic manufacturers can achieve it. Contents of the invention [0003] The technical problem to be solved by the present invention is: since the sampling and calibration of the signal directly affect the accuracy of the system compensation, if there is an error in the system calibration, even the best algorithm i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/00G01R19/25
Inventor 高永全刘文平孙强刘春平杜楠薛伟国张晓宇
Owner CENT RES INST OF TIANJIN BENEFO MECHANICAL EQUIP GRP CO LTD