Skip to content 
1. Application Scenarios
The energy storage system is used for battery energy storage power stations, industrial and commercial energy storage, and household energy storage, achieving functions such as peak shaving and valley filling, backup power supply, and smooth output of new energy. The power range ranges from 3kW (household) to MW level (power station).
2. The Role of the Product in the System
| Product Category | System Function |
| Rectifier bridge | Grid side AC/DC rectification (charging mode) |
| Fast recovery diode/SiC diode | DC/DC boost/buck diode, PFC freewheeling diode |
| Ultra fast recovery rectifier bridge | High current rectification, used for PCS modules |
3. Recommended Product Model
| Product Category | Recommended Series/Model | Key Parameters |
| Three-phase rectifier bridge | GBJ/KBJ series (25A – 100A/1200V) | Low VF, surge resistance>400A |
| Ultra soft recovery diode | USR series (600V-1200V) | Soft recovery, low EMI |
| SiC diode | 650V/1200V（10A–50A） | Zero switching loss |
4. AC/DC Module Application
● In bidirectional PCS, the AC/DC stage performs both rectification and inversion, using a three-phase full bridge topology, and the devices need to have bidirectional conductivity
● Recommend using SiC MOSFET+SiC diode combination
5. Application of PFC Circuit
● Energy storage PCS requires bidirectional PFC, with PFC rectification during charging and grid connected inverter during discharging
● Recommended T-type three-level PFC topology, using SiC diodes and IGBT/SiC MOSFETs
6. Common Customer Needs
| Demand | Our Response |
| The switching between charging and discharging should be smooth | Provide driver timing optimization suggestions to avoid direct transmission |
| The current ripple on the battery side should be small | Recommend staggered parallel scheme to reduce ripple |
| The system must meet UL 9540 (Energy Storage Safety) | Provide UL certification documents for devices |
| PCS efficiency should be>97.5% | Provide SiC solutions and efficiency testing data |
