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

Mining explosion-proof high-voltage frequency converter

A high-voltage inverter and explosion-proof technology, which is applied to the transformation of equipment structural parts, AC power input conversion to DC power output, electrical equipment structural parts, etc., can solve problems such as bulky, low power density, poor reliability, etc. , to achieve the effect of small size and high power density

Pending Publication Date: 2020-02-07
深圳库马克科技有限公司
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, in the limited space under the coal mine, the mine flameproof cable of this scheme is long, bulky, low power density, and poor reliability.

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
  • Mining explosion-proof high-voltage frequency converter
  • Mining explosion-proof high-voltage frequency converter
  • Mining explosion-proof high-voltage frequency converter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] The structure of the high power density mining explosion-proof and intrinsically safe high-voltage frequency converter with built-in phase-shifting rectifier transformer in the embodiment of the present invention is as follows Figure 1 to Figure 3 As shown, the rated output voltage of this type of inverter can reach up to 10kV. The rated input voltage of this inverter is 10kV. This type of inverter integrates a rectifier phase-shifting transformer, 12 power units, a control unit, a water cooling unit and 24 three core non-explosion-proof cable. The cables connecting the rectifying phase-shifting transformer and the power unit directly use non-explosion-proof cables, which makes the connection more convenient, fast, safe and reliable, and at the same time reduces the size and cost of the entire inverter.

[0024] Such as figure 1 As shown, XP1 is the inverter input cable connector, which adopts mine flameproof high-voltage connector plug; XS1 is the inverter input cab...

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 mining explosion-proof high-voltage frequency converter, which comprises an explosion-proof shell, a phase-shifting transformer, a conversion circuit, a control unit, and a cooling system. The conversion circuit comprises plurality of groups of power units connected in series, and the AC input end of the power units is connected with a three-phase output end of a low-voltage side of the phase-shifting transformer through a cable. The explosion-proof shell sequentially comprises a transformer cavity, a power unit cavity and a control and cooling cavity in the longitudinal direction, and the phase-shifting transformer, the conversion circuit and the control unit are correspondingly arranged in the transformer cavity, the power unit cavity and the control cavity. A partition plate between the transformer cavity and the power unit cavity comprises a cable via hole, and the cable penetrates through the cable via hole to be connected with the phase-shifting transformer and the power units. Parts of devices of the control unit and the cooling system are arranged in the control and cooling cavity. The mining explosion-proof high-voltage frequency converter is small in size and high in power density.

Description

[technical field] [0001] The invention relates to a high-voltage frequency converter, in particular to a mine flameproof high-voltage frequency converter. [Background technique] [0002] With the advancement of technology, the production capacity of modern mines continues to expand. The voltage of the underground main conveyor belt matching motor has been increased to 10kV, and the power of the motor has been increasing. 10kV output mine explosion-proof and intrinsically safe high-voltage inverter drive has become a good solution. The traditional 10kV input / 0-10kV output mine-used flameproof and intrinsically safe high-voltage inverters generally have low integration and poor reliability. [0003] The invention with the application number CN201110271028.5 discloses a mine-used flameproof high-voltage frequency converter, which includes a phase-shifting transformer unit flameproof box and a power unit flameproof box, and the phase-shifting transformer unit flameproof box is ...

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): H02M7/00H05K7/20H02P5/74H02P27/06
CPCH02M7/003H02P5/74H02P27/06H05K7/20927
Inventor 徐占军李瑞常罗自永白俊董以恒
Owner 深圳库马克科技有限公司