How to control EMC consistency during mass production of PCS for energy storage systems?

Ensuring consistent EMC performance during PCS mass production requires control across all stages, including design, materials, production, and testing.

1. Design Robustness: EMC design must have sufficient margins to tolerate normal fluctuations in component and process parameters. Parameter selection for critical filtering and protection circuits should not be at a critical level.

2. Key Component Control: Strict supplier management and incoming material inspection standards should be established for key components that significantly impact EMC performance (such as common-mode inductors, X/Y capacitors, magnetic rings, and shielding gaskets) to ensure batch-to-batch stability of parameters and materials.

3. Production Process Standardization: Develop and solidify production processes that affect EMC, such as PCB grounding via processes, shielded cable termination processes, filter installation torque, and screw tightening sequence.

4. Production Process Inspection: Establish necessary inspection points on the production line, such as checking grounding continuity and shielding layer overlap quality.

5. Sampling and Batch Testing: Regularly sample finished products from the production line for complete EMC testing to monitor long-term consistency. Establish a list of critical EMC control points and strictly enforce them.