Different than in compressors, turbines convert the energy of a drifty fluid into rotational energy. Subsequently, the rotational energy is transformed in electrical energy through a coupled generator.
If there is a focus on small power classes, the result is – based on physical conditions – a miniaturised system, as a consequence thereof increasing rotational speed. With our motors/generators, which are optimised for high rotational speeds, the appropriate bearings (gas or magnetic) and the respective power/control electronics, miniaturised and customised solutions can be realized. This includes, besides the mechanical parts, customised extensions for the control of the turbine. In the gas turbine example, this includes the connection of a battery for starting with control of other components such as valves or the connection and the analysis of required sensors (process temperatures, ignition sensors, etc.). Moreover start and shut down cycles can be flexibly programmed with various control modes available (speed control, torque control, power control, etc.). A few examples of turbine application areas are illustrated below. So why don’t you think a smaller dimension also with turbines?
A gas turbine exists of a compressor, a combustion chamber, a turbine and a generator. The goal is to generate electrical energy through fuel combustion. Nowadays, miniaturised gas turbines are increasingly applied for mobile energy generation. But they are also applied in stationary operations such as in emergency power units, as generators of electrical energy, and heating in residential and industrial buildings, so called combined heat and power (CHP) source.
If there is a need for decentralised electrical power, but only compressed air (or another gas under pressure) is available, consumers can be supplied with electrical energy using an expansion turbine. A turbine impeller linked to a high-speed electrical generator offers a compact and lightweight power supply unit.
Electrical energy can also be generated quite similar from thermal energy by an expansion turbine, e.g. via water vapour cycle (steam turbine) or at lower temperatures via an organic ranking cycle (ORC).
The decompression of a gas in the turbine creates the temperature drop, which allows the operation in cooling applications. This principle is for example applied for the liquefaction of gases in cryogenics or in air conditioning systems (e.g. air cycle machines).