A New Filtering Technique That Makes Power Transistors Immune to EMI

Bona, C.; Fiori, Franco

doi:10.1109/tpel.2010.2086489

Cited by 12 publications

(6 citation statements)

References 14 publications

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“…An irreparable result of the attack is causing a short circuit to burn the converter. In this work, we will demonstrate that an arbitrary audio signal can be injected into a speaker system, in which the nonlinearities of the audio amplifier is exploited (see details in Section 6.2); furthermore, we will show that a motor control system can be precisely controlled, in which the imperfection of transistors [4,5,13] are exploited (see details in Section 6.3). All of these show that it is not difficult to use electromagnetic signal injection attacks to manipulate the actuator behaviors precisely.…”

Section: Circuit Response To Injected Signalmentioning

confidence: 99%

Detection of Electromagnetic Signal Injection Attacks on Actuator Systems

Zhang¹,

Rasmussen²

2022

Preprint

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An actuator is a device that converts electricity into another form of energy, typically physical movement. They are absolutely essential for any system that needs to impact or modify the physical world, and are used in millions of systems of all sizes, all over the world, from cars and spacecraft to factory control systems and critical infrastructure. An actuator is a "dumb device" that is entirely controlled by the surrounding electronics, e.g., a microcontroller, and thus cannot authenticate its control signals or do any other form of processing. The problem we look at in this paper is how the wires that connect an actuator to its control electronics can act like antennas, picking up electromagnetic signals from the environment. This makes it possible for a remote attacker to wirelessly inject signals (energy) into these wires to bypass the controller and directly control the actuator.To detect such attacks, we propose a novel detection method that allows the microcontroller to monitor the control signal and detect attacks as a deviation from the intended value. We have managed to do this without requiring the microcontroller to sample the signal at a high rate or run any signal processing. That makes our defense mechanism practical and easy to integrate into existing systems. Our method is general and applies to any type of actuator (provided a few basic assumptions are met), and can deal with adversaries with arbitrarily high transmission power. We implement our detection method on two different practical systems to show its generality, effectiveness, and robustness.

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Section: Circuit Response To Injected Signalmentioning

confidence: 99%

Detection of Electromagnetic Signal Injection Attacks on Actuator Systems

Zhang¹,

Rasmussen²

2022

Preprint

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“…Hamza et al [19], Ye et al [20], Wang et al [21], Bona and Fiori [32], Hamza et al [33], Amini [34], Luo et al [35] primarily discussed about EMI filter for the DC-fed threephase motor drive system and APF system. The authors concluded that, multilevel inverters are able to make direct connection of the APF to high rated voltage network.…”

Section: ) Emi Filter Designmentioning

confidence: 99%

A State-of-the-Art Review on Conducted Electromagnetic Interference in Non-Isolated DC to DC Converters

et al. 2020

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One of the most challenging and interesting field in power electronics is the ability to mitigate the Electromagnetic Interference (EMI). A natural source of EMI includes the atmospheric discharge/charge phenomena and extra-terrestrial radiation. Man-made source of EMI are line radiation, auto ignition, radio frequency interference and power lines. Suppression of EMI and enhancing the Electro Magnetic Compatibility (EMC) has become essential in high frequency power electronic converters. This review article is a one stop solution for new researchers and practitioners to understand about the effects of EMI and its suppression techniques in detail. INDEX TERMS Electro magnetic compatibility, electro magnetic interference, mitigation.

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“…Furthermore, the complete package model has been taken into account but here, for the sake of simplification, only the dominant components of such a model (the L PX bonding parasitics inductances) are considered. In [8] it has been shown that the susceptibility analysis to RFI affecting the drain terminal of a LS power transistor switched-off (switched on) steadily can be performed with good accuracy referring to small-signal equivalent circuits. Specifically, power transistor switching failures take place when the disturbance superimposed onto the gate-source voltage cross-over the transistor threshold.…”

Section: Mos Transistor Susceptibility To Emimentioning

confidence: 99%

“…This model will be compared with and related to the well known lumped model proposed by Razavi et al [10] and used in [7,8].…”

Section: Mos Transistor Susceptibility To Emimentioning

confidence: 99%