With this in mind, ebm papst created the CompaNamic turbo compressor for the 1 kWe (electrical input power) to approximately 55 kWe motor power range, which allows for variable flow quantities of different refrigerants while also requiring significantly less refrigerant due to a volume reduction of up to 90% in the compressor itself.
High level of efficiency and long service life
The 3 kWe and 10 kWe variants are particularly suitable for use with refrigerants R290 and R1234ze(E) and are therefore ideal for heat pumps and refrigeration technology, for example in larger buildings and industrial applications. Neither of the HighSpeed compressors uses oil lubrication, which offers further advantages: As there is no surface wetting with lubricant (oil including additives), heat transfer in the heat exchangers is improved and pressure losses are reduced. The use of suitable materials and hard coatings on the bearing surfaces ensure that the rotor starts and comes to a stop with practically no wear. The compressors are designed for a service life of approx. 150,000 hours and more than a million start-stop cycles.
Powerful compact motor
Economically efficient turbo compressors
Despite their low torque, the compact, high-speed internal rotor motors produce 3 kWe at approx. 240,000 rpm and larger variants up to 55 kWe at approx. 60,000 rpm. The power electronics are designed for these operating conditions and can use a wide range of power supply voltages. For example, line voltages from approx. 180 to 240 VAC or 320 to 480 VAC are possible. For closed-loop control in pulse width or pulse amplitude modulation, the high speed of the internal rotor motors requires currents with frequencies of up to over 100 kHz, which the power output stages reliably provide with an efficiency of more than 97%, even at partial load.
This results in economically efficient turbo compressors that compress both conventional as well as particularly environmentally friendly and natural refrigerants with no global warming potential. Their high efficiency and low operating noise levels are gentle on the environment and vibration-free operation prevents structure-borne noise transmission. This makes the new CompaNamic compressors suitable for demanding applications with stringent requirements for smooth operation, reliability and ease of use.
