Responsive Image Banner

Renk Releases Recovar-E For Compressor Drive Speed Control

Premium Content

January 13, 2020

Germany-based specialist in drive technology Renk is presenting a new mechanical variable-speed drive with a superimposition low-voltage induction electric motor to control the speed of compressors or pumps.

Recovar-E is a mechanical variable-speed drive with a superimposition low-voltage induction electric motor to control the speed of compressors or pumps. The name stands for Renk ECOnomic VARiator, the E indicating the electric superimposition drive.

For most compressors and pumps above 3 MW using variable-frequency drives (VFD) with medium-voltage electric motors, Recovar-E becomes an alternative solution bringing benefits in efficiency, maintenance and total harmonic grid distortion (THD).

Energy efficiency is the main advantage of this system; for lower speeds, the superimposition recycles the power subtracted from the main driver. For higher speeds, with the power of superimposition added to the main motor, the main motor can be downsized with lower purchase costs and lower losses.

System losses with the Recovar-E are lower than those in systems with hydrodynamic superimposition. According to Renk, Recovar-E has an efficiency performance of 95% across the whole speed range (Recovar-E covers speeds between 70% and 105%, but a larger speed range can be achieved).

Another advantage of the Recovar-E is its easy maintenance, a feature that also helps during first assembly.

The configuration of the power-splitting gear set is composed of three planets and features a full horizontal split line that allows the user to remove each planet with its bearings and the central pinions directly on site, without the need for removing the gear from the foundation. The superimposition motor can be removed on site too without disrupting the casing alignment.

Renk will demonstrate the Recovar-E variable-speed drive with electric superimposition during an event at its Augsburg, Germany headquarters on Feb. 12, 2020. More information can be found at: www.renk.biz.

MAGAZINE
NEWSLETTER
Delivered directly to your inbox, CompressorTech² News features the pick of the breaking news stories, product launches, show reports and more from KHL's world-class editorial team.
Latest News
Everllence technology selected for Stockholm Exergi’s large-scale BECCS project
Former MAN Energy Solutions unit to supply compressor and expander train for carbon removal facility
Wison New Energies and Siemens Energy sign MoU on floating LNG cooperation
Agreement focuses on turbine and compressor packages to streamline offshore project development
TotalEnergies, partners reach FID on fourth train at Rio Grande LNG
Final investment decision will expand South Texas export terminal to 24 mtpa by 2030
CONNECT WITH THE TEAM
Jack Burke Senior Editor Tel: +1 262 527 0815 E-mail: [email protected]
Gabriele Dinsel Brand Manager Tel: +49 711 34 06 73 50 E-mail: [email protected]
Kristin Pride USA Sales Representative Tel: +1 720 298 8546 E-mail: [email protected]
CONNECT WITH SOCIAL MEDIA

WEBINAR: Carbon Capture and Storage

COMPRESSORTech² is giving you a front-row seat to the technologies making CCS work today. Join Baker Hughes and Caterpillar as they share hands-on case studies and deployment insights—from CO₂ compression and pipeline transport to secure underground storage.

📅 December 4 2025

I want to attend!