This work proposes an Active Thermal Control (ATC) of power switches. Leveraging on the fact that thermal stress has wide impact on the system reliability, controlling thermal transients is supposed to lengthen the lifetime of electronic conversion systems. Indeed in some environments, such as transportation, reliability and lifetime are still obstacles to widespread adoption of electric and electronic actuators, despite a general trend of electrification spreading in many different areas of interest. Active thermal control is attained leaving the electric parameters of load untouched, while acting dynamically on gate parameters (voltage and resistance), by means of a specifically designed gate driver. Two different control algorithms, sharing similar model and hardware, are presented: one is based on a linear controller, while the other relies on a model-predictive control (MPC) strategy. Simulation results of control schemes are presented, together with evaluation of the proposed loss models. Experimental proof of the ability of the proposed control to reduce thermal swing and related stress on the device is presented, too.

Thermal stress mitigation by Active Thermal Control: Architectures, models and specific hardware / Soldati, Alessandro; Dossena, Fabrizio; Pietrini, Giorgio; Barater, Davide; Concari, Carlo; Iannuzzo, Francesco. - 2017-(2017), pp. 3822-3829. ((Intervento presentato al convegno 9th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2017 tenutosi a usa nel 2017 [10.1109/ECCE.2017.8096674].

Thermal stress mitigation by Active Thermal Control: Architectures, models and specific hardware

Soldati, Alessandro
;
Pietrini, Giorgio;Barater, Davide;Concari, Carlo;
2017

Abstract

This work proposes an Active Thermal Control (ATC) of power switches. Leveraging on the fact that thermal stress has wide impact on the system reliability, controlling thermal transients is supposed to lengthen the lifetime of electronic conversion systems. Indeed in some environments, such as transportation, reliability and lifetime are still obstacles to widespread adoption of electric and electronic actuators, despite a general trend of electrification spreading in many different areas of interest. Active thermal control is attained leaving the electric parameters of load untouched, while acting dynamically on gate parameters (voltage and resistance), by means of a specifically designed gate driver. Two different control algorithms, sharing similar model and hardware, are presented: one is based on a linear controller, while the other relies on a model-predictive control (MPC) strategy. Simulation results of control schemes are presented, together with evaluation of the proposed loss models. Experimental proof of the ability of the proposed control to reduce thermal swing and related stress on the device is presented, too.
9781509029983
Thermal stress mitigation by Active Thermal Control: Architectures, models and specific hardware / Soldati, Alessandro; Dossena, Fabrizio; Pietrini, Giorgio; Barater, Davide; Concari, Carlo; Iannuzzo, Francesco. - 2017-(2017), pp. 3822-3829. ((Intervento presentato al convegno 9th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2017 tenutosi a usa nel 2017 [10.1109/ECCE.2017.8096674].
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11381/2838983
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