{"id":67783,"date":"2025-08-11T09:50:54","date_gmt":"2025-08-11T13:50:54","guid":{"rendered":"https:\/\/blogs.sw.siemens.com\/simcenter\/?p=67783"},"modified":"2026-03-26T06:47:59","modified_gmt":"2026-03-26T10:47:59","slug":"combine-nvh-power-high-voltage-zone-data","status":"publish","type":"post","link":"https:\/\/blogs.sw.siemens.com\/simcenter\/combine-nvh-power-high-voltage-zone-data\/","title":{"rendered":"3 essential questions answered: How to combine NVH, power or even high voltage zone data"},"content":{"rendered":"
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Trained HV safety engineer analysing time-aligned multi-physics measurements from electric drivetrain setup using Simcenter Testlab software, with Simcenter SCADAS hardware visible in the background<\/em><\/figcaption><\/figure><\/div>\n\n\n
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\ud83d\ude80 Introduction<\/h3>\n\n\n\n
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As the electric vehicle (EV) revolution gains momentum, testing engineers face a dual challenge: ensuring mechanical integrity while maximizing energy efficiency, extending driving range, and controlling electrical losses. Traditional NVH (Noise, Vibration, Harshness) analysis alone no longer suffices. Today, integrated testing workflows spanning mechanical, thermal, and electrical domains are crucial. Modern test benches now deliver real-time, synchronized measurements across these domains, providing the insights needed to develop quieter, more efficient, and more reliable EVs.<\/p>\n\n\n\n

At the heart of this integrated approach is the Simcenter SCADAS<\/strong><\/a> hardware platform, a high-performance, multi-physics data acquisition tailored for e-mobility applications. Complementing it, Simcenter Testlab software<\/a><\/strong> offers advanced postprocessing and analysis tools to interpret complex, synchronized data streams. Together, these solutions empower EV testing teams to tackle critical challenges with confidence.<\/p>\n\n\n\n

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\u26a1\ufe0f 1. How can electrical and NVH measurements be combined seamlessly using a single data acquisition system?<\/h3>\n\n\n\n
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Electric powertrains bring entirely new sources of noise and vibration into play [1], from inverter switching and electromagnetic harmonics to current ripple-induced resonances or vibrations. To truly understand these phenomena, engineers must correlate mechanical behavior with electrical inputs. That\u2019s exactly what modern testing setups enable: balancing NVH, electrical, and mechanical harmonics, even in the audible range as already discussed in the following scientific or blogpost articles [2][3][4][5]. <\/p>\n\n\n\n

This example highlights how Simcenter SCADAS makes this integration possible in real e-mobility scenarios. You can directly measure currents up to 1000 A and voltages beyond 1000 V using compatible galvanic isolated high-voltage probes, all within the same system you use for microphones, accelerometers, and strain gauges.<\/strong> You don’t need to stitch together data from separate devices. Instead, everything like voltage, current, speed, sound, temperature, strain, and much more is time-aligned and ready for cross-domain analysis<\/strong> within Simcenter Testlab.<\/p>\n\n\n\n

Safety is paramount. Unlike test setups that may compromise on isolation or calibration, Simcenter SCADAS is engineered for demanding environments, where strict compliance with high-voltage safety protocols and proper electrical safety training is essential. A clear understanding of the relationship between personnel safety, sensor placement (in low- or high-voltage zones), sensor type (including galvanic isolation), and the data acquisition system is critical to ensuring both accurate measurements and safe operation.<\/p>\n\n\n\n

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E-mobility testing setup: Integrated NVH and electrical signature analysis using one of the Simcenter SCADAS systems<\/em><\/figcaption><\/figure><\/div>\n\n\n
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\ud83d\udd0b 2. How do you safely access high-voltage zones without compromising data integrity or safety?<\/h3>\n\n\n\n
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Modern EV validation isn\u2019t done in lab benches alone. Whether it\u2019s road testing, dyno simulations, or hardware-in-the-loop, you’re often required to measure (quasi-) static or dynamic signals inside High-Voltage (HV) areas<\/strong> such as:<\/p>\n\n\n\n