Mitsubishi A741 regen drive brings F1 to inverters


When a motor load needs to be stopped quickly, dynamic braking is often used.  In an inverter drive application, this involves applying a braking torque to the motor to bring it to a stop.  The energy released during this process is normally absorbed by a braking circuit and dissipated through braking resistors in the form of heat, whilst also protecting the drive from overloading.


Rather than lose the energy during braking, Formula 1 introduced a system called KERS (Kinetic energy recovery systems) during the 2009 season.  In KERS the waste energy (heat) released by the car’s braking is stored and can be used later to boost acceleration.  This process is known as regeneration, and Mitsubishi D741 regenerative variable speed drives have the capability to recover the braking energy of a load and return it to the power system.  The A741 is the 415V version of the A701 series for European applications


Feeding the energy generated by braking back into the power supply system generates much less heat than a braking resistor; reduces power consumption, and simplifies installation and space requirements by eliminating the need for cooling hardware.  The energy fed back into the supply can also be used for other purposes, reducing operating costs still further.


Contact us at to see if the D741 is suitable for your application;  download the D741 brochure, or go to the Mitsubishi UK website for more information


 See the range of Mitsubishi inverter drives at


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