In this paper, we present the design and implementation of a cyber-physical security testbed for networked electric drive systems, aimed at conducting real-world security demonstrations. To our knowledge, this is one of the first security testbeds for networked electric drives, seamlessly integrating the domains of power electronics and computer science, and cybersecurity. By doing so, the testbed offers a comprehensive platform to explore and understand the intricate and often complex interactions between cyber and physical systems. The core of our testbed consists of four electric machine drives, meticulously configured to emulate small-scale but realistic information technology (IT) and operational technology (OT) networks. This setup both provides a controlled environment for simulating a wide array of cyber attacks, and mirrors potential real-world attack scenarios with a high degree of fidelity. The testbed serves as an invaluable resource for the study of cyber-physical security, offering a practical and dynamic platform for testing and validating cybersecurity measures in the context of networked electric drive systems. As a concrete example of the testbed’s capabilities, we have developed and implemented a Python-based script designed to execute step-stone attacks over a wireless local area network (WLAN). This script leverages a sequence of target IP addresses, simulating a real-world attack vector that could be exploited by adversaries. To counteract such threats, we demonstrate the efficacy of our developed cyber-attack detection algorithms, which are integral to our testbed’s security framework. Furthermore, the testbed incorporates a real-time visualization system using InfluxDB and Grafana, providing a dynamic and interactive representation of networked electric drives and their associated security monitoring mechanisms. 
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                            Impact Analysis of Data Integrity Attacks on Power Electronics and Electric Drives
                        
                    
    
            In this paper, the impact of various data integrity attacks on electric drive systems of electric vehicles is analyzed. The cyber-physical models of power electronics and electric drives are firstly proposed to investigate the interaction between physical systems and cyber systems. Then, a few predefined performance metrics are introduced, which are needed to evaluate the impact of data integrity attacks on power electronics and electric drives. The simulation is conducted to quantitatively analyze the impact under different attack scenarios. Simulation results show that the metrics are greatly impacted by data integrity attacks and have obvious features different from the ones under healthy conditions. For example, the current distortion could be increased by over 70% by maliciously reducing the current feedback signal to 10% of the original value and the torque ripple could be increased up to 300% of the healthy value by similar attacks. 
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                            - Award ID(s):
- 1725636
- PAR ID:
- 10095640
- Date Published:
- Journal Name:
- IEEE Transportation Electrification Conference and Expo
- ISSN:
- 2377-5483
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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