杭州工业的AIT系列高精度电流换能器采用增强磁通门技术，精度为0.001%（10 ppm），线性度为2 ppm，带宽最高可达500 kHz，响应时间低至1微秒，完全满足严格的高精度动态测量标准电气化电动汽车逆变器、电池C的增压/放电系统以及电动驱动系统的需求。 该方案支持高速同步交流/直流测量，能够精确捕捉高频动态电流信号，并显著提升测量设备的整体精度，达到0.01%。它为新能源系统核心组件的开发、验证和寿命终检（EOL）提供了更稳定、更可靠的测量基准。

应用解决方案

1. High-precision AC/DC Measurement for Inverters

As the core component for energy conversion in electric driving systems, performance of inverter directly determines the vehicle dynamic performance and energy efficiency.

Challenge: The transient current fluctuations generated by high-frequency switches (e.g., SiC based devices) are highly complex and demand extremely rigorous harmonic analysis.

Solution: Hangzhi AIT transducers establish a precise power measurement benchmark for the inverter input and output terminals, featuring ultra-high accuracy of 0.001% and a wide bandwidth of 500 kHz, ensuring accurate calculation of power conversion efficiency during R&D and quality validation phases.

2. Precision Charging & Discharging Measurement of Power Batteries

Performance of battery dynamic charging and discharging is crucial and determines mileage and safety.

Challenge: Battery pack measuring equipment requires extremely high sampling accuracy and system precision requires 0.01% level.

Solution: Leveraging the AIT series' core measurement accuracy of 0.001%, this solution directly enhances overall consistency of complete charge-discharge measuring systems to 0.01%, providing robust data support for BMS strategy optimization, precise capacity calibration and State of Health (SOH) assessment.

3. Full-parameter Synchronous Measurement of Motor Driving System

Motor bench measurement requires simultaneous acquisition of power, current, voltage and phase parameters under strong electromagnetic interference.

Challenge: During high-speed motor operation, PWM control generates significant electromagnetic interference, making it difficult for conventional sensors to maintain phase synchronization and interference resistance.

Solution: Utilizing a high-precision synchronous acquisition system combining AIT current transducer and HCV voltage sensor collocating with a power analyzer. This solution ensures real-time, synchronized collection of electrical parameters across wide bandwidth ranges, delivering a zero-bias measurement chain for motor NVH analysis and efficiency evaluation.