What is the optimal installation location for the magnetic ring in a PCS (Power Control System) of an energy storage system?

The optimal placement of ferrite beads or rings in a PCS system follows the principle of "close to noise or sensitive sources." Specifically:

1. Suppress noise emissions: Place the ferrite bead at the exit of noise sources (such as inverter output cables, switching power supply input/output lines), installing it as close to the noise source as possible to absorb noise before it leaves the equipment.

2. Improve immunity: Place the ferrite bead at the cable entry points into sensitive circuits (such as control board I/O ports, sensor cables) to prevent external interference from entering.

3. Target specific frequency bands: Select the ferrite bead material according to the noise frequency (e.g., nickel-zinc for high frequencies, manganese-zinc for mid-low frequencies), and enhance the attenuation effect at specific frequency points by using multiple turns (increasing inductance) or a combination of materials.

4. Ensure closure: The ferrite bead should be tightly closed, and after installation, its inner diameter should fit as closely as possible to the cable to avoid gaps that reduce performance.