IGBT Laminated Busbar
Products Description
Traditional wire harnesses or single copper busbars are prone to the following problems in high-frequency, high-power scenarios:
Complex wiring and low assembly efficiency; High inductance value, affecting IGBT switching speed; Concentrated temperature rise, leading to decreased long-term operational reliability; Multiple connection points resulting in increased contact losses; Low utilization of internal system space.
However, the IGBT Laminated Busbar, through its integrated laminated design, significantly improves these problems, enabling UPS and server power systems to achieve higher power density, more stable operation, and a more compact layout.
Manufacturing and Production Processes: Micron-Level Rigorous Control
Vacuum Thermal Pressing
In a cleanroom, Laminated Low Inductive Bus Bar and insulation materials are seamlessly fused using high temperature and pressure. The vacuum environment ensures no microbubbles between layers, eliminating the risk of corona caused by uneven electric fields.
Precision CNC Edge Processing
Conductor edges undergo rounded corner treatment and fine polishing to prevent charge accumulation and improve edge discharge voltage.
Automated Coating and Lamination
A fully automated insulating film lamination process ensures alignment accuracy between multilayer structures reaches 0.1 mm, meeting the high tolerance requirements of modular assembly.
Design Advantages: Based on the DFM (Multi-Physics Field Coupling) Concept
| 3D Spatial Topology Avoidance | In the narrow cabinets of server power supplies, fans, water-cooling pipes, or structural components are often present. We use 3D modeling to design irregularly shaped Subway Laminated Busbars (such as L-shaped, U-shaped, and stepped types) to avoid interference while maintaining the optimal solution for the current path within the copper layer. |
| Precise Definition of Creepage Distance and Clearance | For high-voltage UPS systems, we perform special "hollowing out" or "beveling" treatments on the Laminated Busbar for Electric Car edges. Utilizing the composite properties of air and solid insulation, we significantly extend the surface creepage distance without increasing the overall volume of the busbar, meeting the stringent safety requirements of IEC 60950 or IEC 62477. |
| Integrated Sensor Interface Provision | The placement of temperature sensors (NTC) or voltage sampling points is considered from the initial design stage to avoid disrupting the internal electric field balance through later drilling, providing plug-and-play intelligent hardware interfaces. |
Main Functions
Low-Inductance DC Link Transmission
As the DC bus between the rectifier output and the IGBT inverter bridge, Traffic Tram Electric BusBar transmits pulsating DC with extremely low stray inductance, providing a stable DC link voltage for the IGBTs and suppressing transient overvoltage during switching.
Integrated Power Terminal Interface
Extended connection fingers directly interface with the DC input terminals of the IGBT modules, the lead plates of the support capacitors, and the power terminals of the braking unit, reducing external jumper cables and shortening the physical length of the power circuit.
Mechanical Structure Support
The laminated rigid structure possesses a certain mechanical strength, serving as a positioning reference and structural support for power module installation, simplifying the mechanical assembly inside the power cabinet.
Extended Thermal Path
The high thermal conductivity of the copper plate makes it an auxiliary heat dissipation path for the IGBT module terminals. Some heat can radiate to the surrounding air or be conducted to the cabinet frame via the laminated busbar in High Power Converter surface, reducing the module junction temperature.
contact us
If you are looking for highly reliable laminated busbars for UPS, server power supplies, or IGBT power modules, our engineering team can quickly provide customized solutions that are more stable, easier to assemble, and more feasible for mass production, based on your drawings, space layout, and current requirements. Welcome to visit our inquiry page for technical support.
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