Assume you are a translator and a patent agent to translate patent application file from English to Chinese. Maintain the original structure of paragraphs and sentences, and use terms specific to patent applications. I will give you part of the whole document each time. 
source:
Modular switching cell
The invention regards a modular switching cell. Particularly, the switching cell includes a base module, which can be configured by connecting terminals of the base module via pre-shaped busbars in different ways in order to realize different cell module types. The invention further regards a system including said modular switching cell and respective busbars. Finally, the invention regards a method for manufacturing a modular switching cell.
From the prior art, Multi-level Modular Converter (MMC) are known. The MMC is the standard approach within the power converter industry to realise High Voltage Direct Current (HVDC) converters for use in power transmission. They are being widely adopted, too, for use in medium-voltage (MV) drive applications, including power distribution applications such as STATCOM. 
An MMC converter consists of multiple cells connected in series to form a phase arm; one or two of these may be used per phase, depending on the application. Traditional MMC cells are half-bridge or full-bridge, half-bridge cells block voltage in one direction while full-bridge cells block voltage in both directions. The MMC cells usually include insulated gate bipolar transistors.
In a family of production converters, there may be a range of overall converter current and voltage ratings, to suit a wide range of applications. Accommodating different voltage ratings is straightforward given that many cells are placed in series to achieve the required voltage rating; however the current rating of the converter typically falls within the current rating of a single cell. Therefore to produce a range of converter current ratings either requires a range of different cell designs, each with a different current rating, or underutilization of the cell current rating for low-current converter designs resulting in a high cost per kW.
Traditional MMC cell designs are available in the public domain. Many are described in the following publications: 
NAME_1, H-P. Nee, S. Norrga and NAME_2, “Design, Control and Application of Modular Multilevel Converters for HVDC Transmission Systems,” NAME_3 Wiley & Sons/IEE Press, 2016
M. NAME_4, “HVDC activity at Imperial College” 2015, slides 16-18, 
Alstom Grid/GE 