博客

博客

Hall Effect Current Sensors: The Invisible Guardians Reshaping Industrial Energy

Hall Effect Current Sensors: The Invisible Guardians Reshaping Industrial Energy

August 19, 2025

1. The Hall Effect: Translating Current in Magnetic Fields

Hall current sensors operate on the Hall Effect—when current flows through a conductor perpendicular to a magnetic field, charge carriers deflect under Lorentz force, generating a voltage (VH) proportional to magnetic flux density.

 

The formula is:
VH = (RH × I × B) / d
(RH: Hall coefficient; I: Current; B: Magnetic field; d: Material thickness).

This enables non-contact current measurement, eliminating contact loss and high-voltage risks in EVs and smart grids.

 

2. Precision Evolution: From Open-Loop to Closed-Loop

Two core technologies dominate:

  1. Open-Loop (e.g., Token TKC Series)

    • Simple structure, cost-effective (40% savings)

    • Ideal for industrial drives and UPS

  2. Closed-Loop (e.g., Token TBC Series)

    • Compensation coils generate counter-magnetic fields to maintain "zero flux"

    • Accuracy up to 0.1%, temperature drift <±10ppm/°C, critical for EV motor contro

Closed-loop’s anti-interference capability shines in 200kHz SiC switching noise environments. Combined with electromagnetic shielding (Faraday cages), it suppresses >60dB common-mode noise.

 

3. Why Global Industry Chooses Hall Technology?

✅ Galvanic Isolation: Withstands >3kV between input/outpu
✅ Zero Power Loss: No circuit intrusion, boosting efficiency (e.g., 15% loss reduction in PV inverters
✅ Wide Bandwidth: DC to 100kHz AC, covering motors, leakage detectio

Case Study: Token’s TDC Series magnetic modulation sensors deployed in European wind farms detect ±0.5mA leakage current, cutting O&M losses by 15%.

4. Nanjing Token: China’s Answer to Precision Sensing

With 20 years of innovation, Nanjing Token Electronics (TOKEN) delivers global industrial solutions:

Dual-Technology Portfolio:

  • TBC Closed-Loop: 0.1% accuracy for EVs and medical devices

  • TKC Open-Loop: 8000A range for power grids and rail transport

  • 5. Call to Action: Partner with Token

    ✅ Customization: Voltage (50A~2000A) and packages (PCB/rail/terminal) tailored
    ✅ Lifecycle Support: EMC pre-tests to field failure analysis
    ✅ Free Trial: Visit www.token-sensor.com for samples and Renewable Energy Sensing White Paper

     

    ✨ Insight: As current sensing enters the microamp era, Token proves Chinese sensors aren’t just following standards—they’re redefining precision.

联系我们

添加 : NO.80 Feitian Avenue, Lukou Street, Jiangning District, Nanjing City

订阅

请继续阅读、关注、订阅,我们欢迎您告诉我们您的想法。

提交
b f i t y

版权 @2023 南京托肯电子科技有限公司 版权所有 . 网站地图 | 博客 | Xml | 隐私政策 网络支持

留言

留言
如果您对我们的产品感兴趣并想了解更多详情,请在此留言,我们会尽快回复您。
提交

产品

联系我们