Dynamic performance test

Test Background

AI computing power loads have the characteristic of severe fluctuations. The CDU needs to respond quickly when the load suddenly changes, maintain stable temperature and pressure, and avoid the impact of chip temperature on computing power performance.

Test Introduction

The dynamic performance test simulates transient working conditions such as sudden load changes and flow fluctuations, tests the response speed, adjustment ability and stability of the CDU, and verifies its control performance in a dynamic environment.

Testing Objectives

Verify the temperature/pressure adjustment speed during sudden load changes

Evaluate the flow balance ability when multiple branches are in parallel

Test the vibration and noise levels during operation

Ensure the system stability under dynamic working conditions

Test Standards

T/CESA 1249.3-2023 Technical specification for cooling capacity distribution units

GB/T 34877 Performance evaluation of industrial process control systems

OCP CDU Dynamic response test guide

Applicable Products/Related Fields

Suitable for AI computing power centers, high-performance computing clusters, variable-load data centers, etc.

Test Content

Sudden load response test: Temperature recovery time under step load

Dynamic flow balance test: Flow fluctuations when multiple branches start and stop

Vibration and noise testing: Vibration amplitude and noise sound pressure under rated conditions

Control overshoot testing: Maximum deviation during the adjustment process

Project Advantages

Capable of simulating arbitrary load variation curves

High-dynamic-response data acquisition (sampling rate ≥ 100 Hz)

Provides dynamic response time constant and control parameter optimization suggestions

Laboratory Configuration

Programmable thermal load simulator

Dynamic response data acquisition system

Vibration tester (acceleration sensor)

Sound level meter (A-weighted)

FAQ
Q: What is the acceptable value for the CDU's response time to sudden load changes? A: Usually, when the system pressure changes by ±20%, the CDU is required to return to within ±5% of the set value within 10 seconds.