Voltage injection single period control Buck converter and control method thereof

A single-cycle control, voltage injection technology, applied in the direction of converting DC power input to DC power output, adjusting electrical variables, control/regulating systems, etc., can solve problems such as poor load disturbance suppression capability, and achieve fast and good closed-loop dynamic response. Effects of simulated power disturbances, good robustness

Inactive Publication Date: 2017-06-23
NANJING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This technology utilizes the pulse characteristics and non-linear characteristics of the switching converter to realize the real-time control of the average value of the chopping voltage or current. Disturbance suppression ability is poor

Method used

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  • Voltage injection single period control Buck converter and control method thereof
  • Voltage injection single period control Buck converter and control method thereof

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Embodiment Construction

[0019] In order to better understand the technical content of the present invention, specific embodiments are given together with the attached drawings for description as follows.

[0020] Aspects of the invention are described in this disclosure with reference to the accompanying drawings, which show a number of illustrated embodiments. Embodiments of the present disclosure are not necessarily intended to include all aspects of the invention. It should be appreciated that the various concepts and embodiments described above, as well as those described in more detail below, can be implemented in any of numerous ways, since the concepts and embodiments disclosed herein are not limited to any implementation. In addition, some aspects of the present disclosure may be used alone or in any suitable combination with other aspects of the present disclosure.

[0021] The schematic diagram of the Buck converter with voltage injection single-cycle control proposed by the present inven...

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Abstract

The invention discloses a voltage injection single period control Buck converter and a control method thereof and belongs to the control field of an electric power converter. The Buck converter comprises a Buck converter main power circuit, a single period control circuit and an output voltage sampling conditioning circuit, an output voltage signal is sampled, an output voltage and an output reference voltage are compared to acquire an error voltage, the error voltage is compensated through a compensator to acquire a compensation voltage, the compensation voltage and a diode voltage sampling signal add together, an addition result is inputted to a resettable integrator inverting end, and an integrator output signal and the output voltage reference are compared to acquire a duty ratio of a switch tube of the Buck converter. According to the Buck converter, on the basis of original single period control, the sampled output voltage signal is injected to a resettable integrator, response to input voltage disturbance and load disturbance can be simultaneously realized in a single period, and thereby disadvantages of single period control load adjusting performance can be solved.

Description

technical field [0001] The invention relates to the field of power converter control, in particular to a Buck converter with voltage injection single-cycle control and a method for voltage injection single-cycle control based on the Buck converter. Background technique [0002] The development trend of the DC / DC converter is that the efficiency of the converter is getting higher and higher, the power density is getting higher and higher, and the dynamic load performance requirements are getting stricter. Especially in low-voltage and high-current applications, how to design a power supply that meets the requirements is a major challenge in the field of power electronics. The research on its main circuit topology and control methods has become one of the hot spots in the field of power electronics. [0003] The single-cycle control technology is a pulse-shaped nonlinear control technology. Its basic idea is to control the turn-on time or turn-off time of the power switch tube...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/157
CPCH02M3/157
Inventor 胡文斌曹敬承哈进兵唐伟杰王生财王艳秋吕建国赵刚
Owner NANJING UNIV OF SCI & TECH
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