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

9A-MMC control method and terminal device

A 9A-MMC, control method technology, applied in the output power conversion device, electrical components, AC power input into DC power output and other directions, can solve the 9A-MMC control method is complex and other problems

Active Publication Date: 2021-05-11
STATE GRID HEBEI ELECTRIC POWER CO LTD +1
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides a 9A-MMC control method and terminal equipment, to solve the comparison of 9A-MMC control methods in the prior art complicated question

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
  • 9A-MMC control method and terminal device
  • 9A-MMC control method and terminal device
  • 9A-MMC control method and terminal device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

[0027] In order to illustrate the technical solutions of the present invention, specific examples are used below to illustrate.

[0028] figure 2 It is a schematic diagram of the implementation flow of the 9A-MMC control method provided by an embodiment of the present invention. For the convenience of description, only the parts related to the embodiment of the present invention ar...

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 is suitable for the technical field of converters, and discloses a 9A-MMC control method and a terminal device, and the method comprises the steps: determining a low-frequency side voltage reference value and a power frequency side voltage reference value; calculating a voltage reference value of an upper bridge arm, a voltage reference value of a middle bridge arm and a voltage reference value of a lower bridge arm; determining the number of sub-modules contained in the upper bridge arm, the number of sub-modules contained in the middle bridge arm and the number of sub-modules contained in the lower bridge arm; based on a low-frequency side voltage reference value, a power frequency side voltage reference value, a voltage reference value of an upper bridge arm, a voltage reference value of a middle bridge arm, a voltage reference value of a lower bridge arm, the number of sub-modules included in the upper bridge arm, the number of sub-modules included in the middle bridge arm and the number of sub-modules included in the lower bridge arm, generating PWM waves corresponding to the sub-modules; and sending the data to the corresponding sub-module. According to the method, the 9A-MMC is controlled, and the control method is relatively simple.

Description

technical field [0001] The invention belongs to the technical field of converters, and in particular relates to a 9A-MMC control method and terminal equipment. Background technique [0002] The topology of 9A-MMC (9Arms-Modular Multilevel Converter, nine-arm modular multilevel converter) is as follows figure 1 shown. Each phase of 9A-MMC is composed of upper, middle and lower bridge arms, wherein the upper, middle and lower bridge arms are respectively composed of multiple identical half-bridge sub-modules. In addition, the upper and lower bridge arms respectively contain a bridge arm inductance. The inductance of the upper bridge arm and the middle point of the middle bridge arm of each phase are used as the upper AC output terminals, and the inductance of the lower bridge arm and the middle point of the middle bridge arm are used as the lower AC output terminals. Therefore, 9A-MMC has two sets of upper and lower AC output terminals. , where the upper AC output terminal ...

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): H02M7/483H02M7/5387H02M7/5395
CPCH02M7/483H02M7/53871H02M7/5395
Inventor 宋文乐王磊郝翔宇苏嘉成宫宁
Owner STATE GRID HEBEI ELECTRIC POWER CO LTD