Serial Hybrid: Power Shift Transmissions – Single Electric Motor with Generator Power

This serial hybrid system for power shift transmissions uses a single electric motor. Transmission operation is managed by a state-of-the-art microprocessor.


High Voltage

Data / Command Signals

System Overview

  • Serial hybrid using generator
  • Frac pump is driven mechanically with hydraulic soft start and creep mode option

Transmission and Controller

  • Twin Disc power shift transmissions
  • Mechanical interface to direct mount e-motor transmission
  • State-of-the-art microprocessor control manages transmission operation

Hybrid Controller

  • Interface with customer-supplied switchgear
  • Communicates with transmission controller for range selection


  • Customer selects and supplies
  • Constant-speed operation

High Voltage Equipment

  • Customer selects and supplies

Hydraulic Power Pack

  • Selection based on application characteristics


  • Not supplied by Twin Disc

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Twin Disc specialists are available to work with your technical experts to select the optimal configuration and components for your specific application.

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