Unlock instant, AI-driven research and patent intelligence for your innovation.

Buck/Boost topological structure, control method and device thereof

A technology of topology structure and control method, which is applied in the direction of control/regulation system, output power conversion device, instrument, etc., and can solve problems such as poor Boost circuit characteristics

Active Publication Date: 2018-08-17
BEIJING WEIKE NENGCHUANG TECH CO LTD
View PDF2 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the object of the present invention is to provide a Buck / Boost topology and its control method and control device, so as to alleviate the technical problem of poor Boost circuit characteristics

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Buck/Boost topological structure, control method and device thereof
  • Buck/Boost topological structure, control method and device thereof
  • Buck/Boost topological structure, control method and device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] A Buck / Boost topology provided by the embodiment of the present invention, such as figure 2 As shown, it includes: a DC input module 100, a Buck / Boost module 200 and a load module 300, wherein the Buck / Boost module 200 includes a first switching tube Q1, a second switching tube Q2, a first diode D1, a second two Diode D2, inductor L and first capacitor C1, the DC input module 100 includes a second capacitor C2, wherein,

[0070] The anode of the first diode D1 is connected to the source of the second switching transistor Q2 as the target node P0, and the cathode of the first diode D1 and the drain of the second switching transistor Q2 are respectively connected to both ends of the inductor L; The cathode of the first diode D1 is connected to the source of the first switching transistor Q1; the drain of the second switching transistor Q2 is connected to the anode of the second diode D2; the target node P0 is connected to the first terminal of the first capacitor C1 con...

Embodiment 2

[0079] A control method provided by an embodiment of the present invention is used to control the first switching tube and the second switching tube in the topology structure of the first embodiment, such as image 3 As shown, the control method includes:

[0080] Step S102, obtain the input voltage, input current and output voltage, wherein the input voltage is the voltage input from the DC input module to the Buck / Boost module, the input current is the current input from the DC input module to the Buck / Boost module, and the output voltage is Buck / Boost module The voltage output from the Boost module to the load module, where the DC input module, Buck / Boost module and load module belong to the topology;

[0081] In step S104, the input voltage, input current and output voltage are used as input variables of the PI control algorithm to control the on-off of the first switching tube and the second switching tube through the output variable of the PI control algorithm to stabili...

Embodiment 3

[0118] A control device provided by an embodiment of the present invention, such as Figure 4 As shown, it includes: used to control the first switching tube and the second switching tube in the topological structure of the first embodiment, including:

[0119] The obtaining module 400 is used to obtain the input voltage, input current and output voltage, wherein the input voltage is the voltage input from the DC input module to the Buck / Boost module, the input current is the current input from the DC input module to the Buck / Boost module, and the output voltage is is the voltage output from the Buck / Boost module to the load module, where the DC input module, the Buck / Boost module and the load module belong to the topology;

[0120] The control module 500 is used to use the input voltage, input current and output voltage as input variables of the PI control algorithm to control the on-off of the first switching tube and the second switching tube through the output variable of ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a Buck / Boost topological structure, a control method and device thereof, and relates to the technical field of power conversion. The topological structure comprises a first switching transistor, a second switching transistor, a first diode, a second diode, an inductor and a first capacitor. The anode of the first diode and the source of the second switching transistor are connected as a target node. The anode of the first diode and the drain of the second switching transistor are connected to both ends of the inductor respectively. The cathode of the first diode is connected to the source of the first switching transistor. The drain of the second switching transistor is connected to the anode of the second diode. A capacitor and a load module are connected in parallel between the cathode of the target node and the cathode of the second diode. The drain of the first switching transistor and the target node are connected to the positive and negative poles of a DC input module respectively. A second capacitor is disposed between the anode and the cathode of the DC input module, wherein the first diode and the second diode can also be replaced by switching transistors. The Buck / Boost topological structure solves a technical problem that a Boost circuit has poor characteristics.

Description

technical field [0001] The invention relates to the technical field of power conversion, in particular to a Buck / Boost topology and its control method and control device. Background technique [0002] With the rapid development of power electronics technology, AC-to-DC circuits (ie, AC-DC circuits) are more and more widely used. There is a boost circuit in the AC-to-DC circuit, which is a Boost circuit. [0003] In the boost circuit, when the output voltage is higher than the peak voltage of the alternating current, the circuit starts to supply power to the load. In view of this, the output voltage of the Boost circuit needs to be greater than a fixed value, and the output voltage is limited; in order to meet the requirements for the output voltage, the Boost circuit needs to go through a long start-up time first, and in order to avoid the load's consumption of the start-up current and affect the start-up , to disconnect the load; in addition, the larger output voltage will...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H02M3/158
CPCH02M3/1582
Inventor 胡勇杜新培谢光学
Owner BEIJING WEIKE NENGCHUANG TECH CO LTD