ETC Technical Specification

Electric Turbo Compounding (ETC) technology is our solution to the challenge of improving energy efficiency for the stationary power generation industry.

ETC 1000

Bowman’s ETC Technology

Bowman’s ETC systems comprise a turbo charger, turbo generator and power electronics unit. These components work together in order to either increase the efficiency of your genset or increase the power output.

Through recovering the exhaust gases from the turbo charger, a turbo generator produces power which is cleaned by the power electronics in order to be clean and grid quality.

How the TG works

-Waste heat energy (exhaust gas) feed through TG inlet
-The force of the exhaust gas causes the TG wheel to spin at >30k RPM, unused energy is feed back to main exhaust stack
-The TG wheel is directly coupled to High speed electrical machine (alternator)
-The alternator produces a non stable AC current, which is exported to the Power Electronic unit (PE)


electric turbo compounding

The ETC system consists of turbo generator (TG) and power electronics (PE) unit.

ETC 1000 Axial flow, horizontal axis turbo generator           ETC 1000 Turbo Generator

-116kWe output
-Lubrication and cooling integrated with host genset
-Built-in-bypass provision (rotor lock)
-3 turbine variants for broad applicability


  How the PE works

-The AC current produced by the Alternator enters the Power electronics’ module.
-This AC input current is converted to DC before the final conversion to a 3 phase AC grid standard (50/60Hz) output.

  ETC 1000 Power Electronics power electronics

-110kWe, 220A rating
-400V/50Hz or 480V/60Hz operation
-Broad grid code compliance


To find out more, you can request the technical specification by completing the form on the bottom of this page.