Together with the Technical University of Dresden, the company has developed energy-saving synchronous permanent magnet motors with low running speed and high output torque. The partners have established a joint venture company in China to develop products implement manufacturing and provide technical services and customized solutions to customers. The products are widely used in power plants, mining, metallurgy, coal industry, chemical industry, environmental protection departments and other industries.

CHOREN's permanent magnetic drive technology is characterized by:

High efficiency, high power factor

The permanent magnet motor from CHOREN has the advantages of a conventional asynchronous motor and a synchronous motor with electrical excitation. It is controlled by a special inverter to obtain the working characteristics equivalent to a DC motor. Compared to asynchronous motors, no excitation reactive current is required. The power factor is significantly improved and the stator current and copper consumption are reduced.

Small dimensions and low weight

The low-speed high-performance permanent magnet motors from CHOREN have a compact structure and a high torque density. They are adapted according to customer requirements. They are more compact than conventional permanent magnet direct drive motors and are more convenient to transport, install, use and maintain.

Simplification of the transmission chain

CHOREN's permanent magnet motor drives the load directly, eliminating the reduction gear, hydraulic clutch and other mechanisms in the conventional structure, shortening the transmission chain and simplifying the transmission structure, which improves the efficiency of the system transmission, reduces the failure points of the equipment, reduces the repair and maintenance effort and reduces the cost of system maintenance.

Hydrogen energy will become a crucial source of energy in the 21st century. That is why the production, storage, transport and application technologies of hydrogen will increasingly come into focus. Hydrogen is characterized by a high calorific value, which - in terms of mass - is three times as high as that of gasoline, 3.9 times as high as that of alcohol and 4.5 times as high as that of coke. Water, the product of hydrogen combustion, makes this energy source the cleanest in the world.

In 2019, China proposed to focus on the development of the hydrogen energy industry. The Hydrogen Energy Alliance is led by the China Energy Investment Group, a consortium of industrial companies that promotes the development of the hydrogen energy industry. As a German company, CHOREN has also become a member of the alliance and offers support in promoting industrial layout, setting standards, power generation and storage, and the application of fuel cell vehicles.

Hydrogen production from coal is currently the most cost-effective method of hydrogen production. As a provider of clean energy technology, CHOREN also focuses on the development of the hydrogen storage and transport business. CHOREN is committed to improving technical research and international cooperation throughout the hydrogen supply chain. CHOREN has established a strategic partnership with Germany, France and other European technology R&D institutions to develop an efficient hydrogen storage technology. CHOREN is expected to be able to offer customers key technologies and products for hydrogen storage and transport, as well as solutions to the bottleneck problems between hydrogen supply and hydrogen consumers.

1. Hydrogen storage and transport

CHOREN and its partners can offer customers sophisticated products and solutions for 500 bar and 700 bar High Pressure Hydrogen Storage Tanks of Type III and Type IV. Currently, the main application in China is the Type III aluminum alloy tank, which is heavier and has a shorter lifetime than the Type IV tank. The Type IV hydrogen storage tank is made of composite liner and carbon fiber (or glass fiber) with wrapping technologies. It has the advantages of low weight, high strength and a longer service life. It can efficiently store and transport hydrogen. E.g., Toyota has already used the Type IV carbon fiber hydrogen storage tank in its "Mirai" hydrogen fuel cell vehicle.

2. SOEC/SOFC technology

The high-temperature electrolysis cell (Solid Oxide Electrolyzer Cell, SOEC) differs from the usual fuel electrolysis cell as a reversible energy converter. The application of this technology can form a cyclical chain for the application of renewable energy; it can reduce dependence on conventional energy sources such as oil and gas obtained by geological mining. At the same time, it uses CO2 as an electrolysis raw material, which effectively reduces carbon dioxide emissions and ultimately achieves a clean energy application.

By feeding in renewable electricity (wind energy or PV solar energy), the electrolyzer can also convert H2O (water or water vapor) and CO2 into hydrogen or synthesis gas. Hydrogen can be used for industrial purposes and transport industries, such as e.g. fuel cell vehicles, or for industrial hydrogen sources. Syngas can be synthesized by chemical processes (e.g.. Fischer-Tropsch reaction) and converted into fuel and chemical raw materials that can replace oil and natural gas. By supplying syngas or natural gas, the fuel cell can generate electrical energy and thermal energy that can be used by industry and households.

3. Technology for Storage of Solid Hydrid

Solid hydride energy storage technology can use hydrogen energy like a battery. By binding hydrogen to solid materials and storing them in solid materials, the hydrogen storage density can be large, and the hydrogen can be stored at normal temperature and pressure, simplifying the use and transport of hydrogen energy. This technology is suitable for hydrogen fixed storage and for small auxiliary energy systems (APU). This technology also has great potential for applications such as trains, ships and auxiliary systems in aviation, etc.

4. Hydrogen energy system

Design and development of mobile hydrogen production and storage systems can provide complete solutions for hydrogen energy applications and enable off-grid generation of renewable energy. Mobile energy storage systems can be used, e.g. to supply small residential communities with green energy or to provide energy for impassable mountain regions, islands or communication centers. Through appropriate business models, such as e.g rental, a temporary power supply for major events or similar can be organized.

1. Methanol in automotive applications

In comparison, the usable energy content of methanol is similar to that of gasoline and its use in combustion vehicles is also possible. Its production is more cost-effective while at the same time reducing harmful car exhaust gases. China is a country with large coal deposits. Therefore, the development of methanol vehicles is a direction that can solve the energy shortage based on the fossil fuel.

2. Manufacturing technology of composites and carbon fiber materials

CHOREN works with European companies and institutes to apply high-performance carbon fiber material for a larger market, e.g. for the applications of T700, T800 and higher quality materials.

As a strategic material, carbon fiber is one of the most important materials for lightweight structures. China's aerospace, railway industry, new energy vehicles, smart aircraft and power supply have a great need for high-quality carbon fiber materials and their components. The design and manufacture of carbon fiber materials require a number of important technical aids. In 2016, the growth rate of China's carbon fiber and composites market was 16.5%, maintaining the world's leading high-speed growth. For example the C929 airliner is currently under development, and more than 50% of the aircraft are expected to be built from composite materials.