​​​Power Control Module for Combined Starter Drive and Power Generation


Under a recent SBIR effort with the Air Force, IS4S developed and demonstrated the benefits of active rectification on paralleling high-frequency turbogenerators. Read more Here.

IS4S Flightworthy Turboalternator ECU and Monitoring Software

Synchronizer Power Control Module for Paralleling Multiple Power Generation Sources

    Under a recent SBIR effort with the Air Force and OSD, IS4S performed modeling and simulation of gas turbine power generation systems to determine innovative, efficient methods to synchronize and link multiple turbogenerators for scalable power generation and provide electrical power for ground forces or vehicles. Read more Here.

Electronic Control Unit for Miniature Turbojet Engines

For over two decades, IS4S engineers have been involved in missile and unmanned air vehicle propulsion. Read more Here.

Power Electronics & Controls

IS4S Flightworthy Ignition Exciter Unit.

IS4S Thermodynamic Cycle Modeling of Turbojet Performance versus Altitude

  IS4S is heavily involved in the development of electronics for command and control purposes for decontamination, obscuration, ground power, and unmanned systems. IS4S specializes in electronics and control systems for gas turbine power generation and propulsion systems at the miniature to small scale. Compared to traditional generator sets, turboalternators offer advantages in size, weight, reliability and attenuated noise level. In support of these systems, IS4S has either developed or is currently developing the following power electronics for several military customers:

  • Remote command and control operability
  • Electronic control unit (ECU) for miniature turbojet engines
  • ECUs for miniature turboalternators (operating above 200k RPM)
  • High-energy ignition exciter for high-tension spark output
  • Power conversion modules (PCMs) for combined startup and power generation
  • Synchronizer power control module for paralleling multiple power generation sources
  • High-speed motor drives


IS4S uses a number of tools for development of power electronics, controls development and packaging. These are listed here:

  • Modeling and simulation of turboalternator and load transients – MatLab®/Simulink®
  • Thermodynamic cycle modeling – Graphical Engine Cycle Analysis Tool (GECAT)
  • Circuit board schematic and layout – KiCad
  • Mechanical design and data management – SolidWorks® CAD and PDM
  • Software development and source code management – Multiple tools used

IS4S Power Control Module for Combined Starter Drive and Power Generation.

​Electronic Control Units for Miniature Turboalternators

     Over the past six years, IS4S engineers have been involved in ECU development for miniature turboalternators for ground power and unmanned ground and air vehicles. Read more Here.

High-Energy Ignition Exciter with High-Tension Spark Output

     IS4S developed the Ignition Exciter Module using capacitive-discharge technology to output a high-energy spark for ignition of a high-speed turboalternator. Read more Here.

IS4S Compact and Scalable Three-Phase Power Generation