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

Boost-type power conversion device

A power conversion device and a step-up technology, which is applied in the direction of output power conversion device, conversion of DC power input to DC power output, adjustment of electric variables, etc. problem, to achieve the effect of less quantity, loss and cost

Pending Publication Date: 2020-10-16
深圳市禾望科技有限公司
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of this, the purpose of this application is to provide a step-up power conversion device to solve the problem that there are many components in the symmetrical BOOST step-up circuit and cannot be connected to the common positive pole or common negative pole

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
  • Boost-type power conversion device
  • Boost-type power conversion device
  • Boost-type power conversion device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Such as figure 2 As shown, the embodiment of the present application provides a step-up power conversion device, including a positive DC bus BUS+, a negative DC bus BUS-, and a capacitor connected in series between the positive DC bus BUS+ and the negative DC bus BUS- C1 and capacitor C2; also includes inductor L1, diode D1 and power switch tube Q1;

[0036] The inductor L1 and the diode D1 are connected in series to the positive DC bus BUS+;

[0037] The first electrode terminal of the power switch tube Q1 is connected between the inductor L1 and the diode D1, and is connected to the anode terminal of the diode D1; the cathode terminal of the diode D1 is connected to the capacitor C1;

[0038] The second electrode end of the power switch tube Q1 is connected between the capacitor C1 and the capacitor C2;

[0039] The control terminal of the power switch tube Q1 is used for receiving a control signal to disconnect or conduct the electrical connection between the firs...

Embodiment 2

[0048] Such as image 3 As shown, the embodiment of the present application provides a step-up power conversion device, including a positive DC bus BUS+, a negative DC bus BUS-, and a capacitor connected in series between the positive DC bus BUS+ and the negative DC bus BUS- C1 and capacitor C2; also includes inductor L1, diode D1 and power switch tube Q1;

[0049] The inductor L1 and the diode D1 are connected in series to the negative DC bus BUS-;

[0050] The first electrode terminal of the power switch tube Q1 is connected between the capacitor C1 and the capacitor C2;

[0051]The second electrode terminal of the power switch tube Q1 is connected between the inductor L1 and the diode D1, and is connected to the cathode terminal of the diode D1; the anode terminal of the diode D1 is connected to the capacitor C2;

[0052] The control terminal of the power switch tube Q1 is used for receiving a control signal to disconnect or conduct the electrical connection between the f...

Embodiment 3

[0057] Such as Figure 4 As shown, the embodiment of the present application provides a step-up power conversion device, including a first step-up sub-circuit and a second step-up sub-circuit;

[0058] The first boost sub-circuit includes a first positive DC bus BUS+, a first negative DC bus BUS-, and a capacitor C1 connected in series between the first positive DC bus BUS+ and the first negative DC bus BUS- and capacitor C2, inductor L1, diode D1 and power switch tube Q1; the inductor L1 and the diode D1 are connected in series to the first negative DC bus BUS-; the first electrode terminal of the power switch tube Q1 is connected to Between the capacitor C1 and the capacitor C2; the second electrode terminal of the power switch tube Q1 is connected between the inductor L1 and the diode D1, and is connected to the cathode terminal of the diode D1; The anode terminal of the diode D1 is connected to the capacitor C2; the control terminal of the power switch tube Q1 is used to ...

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 discloses a boost-type power conversion device. The device comprises a positive DC bus, a negative DC bus, and a first capacitor and a second capacitor which are connected in series between the positive DC bus and the negative DC bus; the device also comprises an inductor, a diode and a power switch tube, wherein the inductor and the diode are connected to the positive DC bus in series. The first electrode end of the power switch tube is connected between the inductor and the diode and is connected with the anode end of the diode; the cathode end of the diode is connected with the first capacitor; the second electrode end of the power switch tube is connected between the first capacitor and the second capacitor; and the control end of the power switch tube is used for receiving a control signal so as to disconnect or connect the electric connection between the first electrode end and the second electrode end. Compared with an existing symmetrical BOOST boosted circuit, the device is small in number of the power switch tubes, is lower in loss and cost, and solves the problem of complex wiring.

Description

technical field [0001] The present application relates to the technical field of power electronics, in particular to a step-up power conversion device. Background technique [0002] Boost circuits are widely used in photovoltaics, energy storage and other fields. Such as figure 1 As shown, because the general power switch tubes on the market are low-voltage devices, it is difficult to withstand higher voltages, and symmetrical BOOST booster circuits are generally used at present. [0003] The symmetrical BOOST boost circuit has the following disadvantages: [0004] 1) The number of power switch tubes is large, the system loss is large, and the cost of the drive circuit is increased; [0005] 2) The number of inductors is large, and there is a problem of complicated wiring; [0006] 3) When multi-channel boost circuits are used in parallel output applications, they cannot share the positive or negative poles; there are problems such as a large number of system input light...

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
Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/156
CPCH02M3/156H02M1/0054Y02B70/10
Inventor 熊新曾建友周党生邹建龙
Owner 深圳市禾望科技有限公司