Serial Hybrid: Power Shift Transmissions – E-Frac Electric Motor with Remote Power Source

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

High Voltage

Data / Command Signals

System Overview

  • Serial hybrid capable of using power from various sources
  • Frac pump is driven mechanically with electric soft start
  • Electric line test option

Transmission and Controller

  • Twin Disc power shift transmission
  • Mechanical interface to direct mount E-Motor to transmission
  • State-of-the-art microprocessor-based controller manages transmission operation

Hybrid Controller

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


  • Customer selects and supplies
  • Constant-speed operation


  • Customer selects and supplies high voltage equipment

Soft Start E-Motor

  • Line test option
  • Speed synchronization

Profitable. Sustainable. Powerful.

These innovative hybrid and electric systems support greener power transmission while delivering the reliability you expect from Twin Disc. Explore some of Twin Disc’s hybrid and electrification options, then contact our team of experts to learn about the endless custom solutions available to create the optimal system. With more than a hundred years of experience in the design of innovative power transmission products, Twin Disc understands your needs and delivers the solutions that earn your confidence.

Land-Based / Off-Highway / Mobile Equipment

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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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