This electronic board named regulator Elettra, is a module for controlling a DC electric brushed motor for automotive
The regulator mounts six IGBTs managed in two banks of three, piloted with two phase syncronized PWM signals with variable Duty-Cycle depending on the gas delivery, the temperature reached by the individual banks and the total current flowing in the bridge.
The power components on the board, freewheeling diodes and IGBTs, are assembled with surface mount tecnology to maximize base\heatsink thermal conductivity.
In addition, to increase the contact area between the components and the aluminium case, the drive currents circulate on the copper plates 1,5mm thick placed under the electronic board.
Maximum continuous current
Maximum operational voltage
||< 15 Watt (each diode)*|
||< 40 Watt (each IGBT)*|
Overall system efficiency
Maximum total power dissipation
Operational total power dissipation
||up to 20 kHz|
* Duty-cycle 85 - 90%
The electronic board monitoring takes place via three temperature sensors positioned close to IGBTs and diodes, and a Hall effect sensor that detects the current at the entrance of the
Such sensors provide their data to an external micro controller, which has the task of generating the PWM signals.
Other features may be implemented.
With the power bridge will be developed the control unit that generates the PWM signals and monitors the sensors, and also a dedicated software.
To change the engine behaviour and the various protections or to update the firmware just start the dedicated application and connect the control unit to the PC through a USB cable.
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