A Method for Acquiring Reference Voltage Curve Based on Full Analog Circuit

A reference voltage, full analog technology, applied in the direction of electrical components, output power conversion devices, etc., can solve the problems of the highest speed bottleneck, poor performance, etc., and achieve the effect of improving EMC performance, simple and efficient method, and improving EMC performance

Active Publication Date: 2019-08-27
GLOBAL ENERGY INTERCONNECTION RES INST CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since both FPGA and D / A are digital circuits, there is a bottleneck problem of the highest rate; and because the supply voltage is 1.8V, the Electromagnetic Compatibility (EMC) EMC performance of the overall drive protection circuit is poor

Method used

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  • A Method for Acquiring Reference Voltage Curve Based on Full Analog Circuit
  • A Method for Acquiring Reference Voltage Curve Based on Full Analog Circuit
  • A Method for Acquiring Reference Voltage Curve Based on Full Analog Circuit

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Embodiment Construction

[0065] 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 fall within the protection scope of the present invention.

[0066] Such as image 3 As shown, the present invention provides a method for obtaining a reference voltage curve based on a full analog circuit, the reference voltage curve is the reference voltage curve in the IGBT series active voltage equalization control; the reference voltage curve is on the time coordinate with the pulse signal received by the drive circuit The input waveform is associated, and the graph formed by the reference voltage curve and its t...

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Abstract

The invention provides a reference voltage curve acquisition method based on a full analog circuit, by determining the working principle of the reference voltage curve and the full analog circuit for testing; according to the working principle of the reference voltage curve, the reference voltage curve is sequenced in the full analog circuit Control; control the voltage and slope of the reference voltage curve in the full analog circuit; combine timing control, high-power charge and discharge control and voltage interval identification control to obtain the reference voltage curve. The method proposed by the invention is simple and efficient, overcomes the bottleneck problem of the highest rate, improves the EMC performance of the circuit, and cleverly designs an accurate voltage reference curve with the least electronic components.

Description

technical field [0001] The invention relates to the field of full analog circuits of smart grids, in particular to a method for obtaining reference voltage curves based on full analog circuits. Background technique [0002] The IGBT is a gate control device, and the IGBT series voltage balance can be realized by controlling the gate. The active voltage control (Active Voltage Control) proposed by Dr. Patrick Palmer of the University of Cambridge in the UK introduces multiple closed-loop feedbacks to make the collector-emitter voltage V during the IGBT switching process CE Follow the set reference voltage to achieve voltage balance in direct series connection of IGBTs. Such as figure 1 As shown, the active voltage control consists of three closed loops. The outermost ring compares the reference voltage setting with the IGBT collector-emitter voltage to generate an error signal to control the IGBT. When the IGBT terminal voltage is higher than a given voltage, a positive g...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M1/08
CPCH02M1/08H02M1/0006
Inventor 周舟李卫国黄杰赵国亮蔡博赵东元蔚泉清
Owner GLOBAL ENERGY INTERCONNECTION RES INST CO LTD
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