Siemens provides 105 MW high-voltage motors and 40 MW starter inverters for China

Siemens Large Drive Application Division (LDA) will provide 105 MW high-voltage motors and 40 MW starter inverters for energy storage projects in China

  ·The efficiency of the motor is as high as 98%, and the efficiency of the inverter is as high as 99%

  Siemens Large Drive Application Division (LDA) recently received an order from a Chinese customer to provide it with a special 2-pole motor. The motor has a power of 105 MW, and can be used as a generator with a power of 110 MW and a capacity of 129 MW in the power generation mode. The efficiency will be as high as 98% or more. It will be a world-class super-functional 2-pole motor.

  In addition to the motor, Siemens will also deliver a 40 MW Sinamics GL150 starter inverter. This LCI (Load Commutation Inverter) frequency converter is specifically designed for single-motor applications with variable and constant torque characteristics. Thanks to low switching loss and low loss thyristor technology, the efficiency of LCI inverters is as high as 99%.

The drive system will be part of the energy storage project. In China, energy storage has been regarded as a key supporting technology of the energy revolution and a national strategic emerging industry. This technology has decisive advantages such as large capacity, low cost, high efficiency and environmental protection.

  In the operation of the factory, the motor drives the compressor to store energy in a suitable storage container. The energy stored in the compressor can be released to drive the expander, which in turn drives the generator to generate electricity. Compared with other energy storage technologies, the factory has a very large rated power and energy storage capacity, low self-discharge rate and long service life. These characteristics make it a promising and economical method for large-capacity energy storage grid services.

The motor will be produced at Siemens’ Dynamowerk plant in Berlin, Germany. This is the oldest manufacturing plant of Siemens, with a history of 115 years.

Hermann Kleinod, CEO of Siemens Large Drive Application Division (LDA), said: "Once completed, this project will become the world's ultra-large-scale, ultra-efficient energy storage station and a veritable benchmark. We are very happy to provide customers and the project with a A drive system that is also benchmarking-a world-class super-functional 2-pole motor with an efficiency of more than 98%."