Technical advantages and applications of Laminated Copper BusBar

Laminated Flexible BusBar is an electrical connection bar with a multi-level composite structure, which can be regarded as the "highway" in the power distribution system. Compared to traditional complex, bulky, time-consuming, and labor-intensive wiring methods, stacked busbars can construct power distribution systems with high technological content and clear structures. They have core features such as repeatable electrical performance, low inductance impedance, strong anti-interference ability, high reliability, simple assembly, and space saving. They can be used as ideal electrical connection components for high-power modules and are widely used in power conversion modules for wind power, photovoltaic, electric traction equipment, and large network equipment. The core advantages of laminated Bus Bar for Telecom can be summarized as five points: balancing low cost and high safety and reliability; Compact design significantly saves installation space; Optimizing circuit performance with low inductance and low impedance; Convenient installation reduces the probability of incorrect installation; Compared to traditional cables, it has a stronger current-carrying capacity and slower temperature rise.

In power electronic systems, it is often difficult to change the switching devices and DC side parasitic capacitance of the main circuit. Therefore, reducing the distributed inductance of the main circuit bus is the fundamental measure to suppress switch voltage spikes, and the Motor Drive Laminated Bus Bar for Power Electronics is a high-quality choice to achieve this goal. At present, there are four main ways of electrical connection between switching devices and DC side supporting capacitors, each with its own adaptation scenarios and performance differences. Copper plates or copper strips arranged in parallel are simple to produce and easy to implement. Although they can suppress voltage spikes to a certain extent, they have a large mutual inductance and are only suitable for high-power and low performance requirements; Cable stranded wires are convenient to use and cost-effective, but they have high self inductance and mutual inductance, poor performance, and insufficient current carrying capacity. They are only suitable for low-power, low performance requirements scenarios; Coaxial cables have low mutual inductance and are easy to use, but they are expensive and have low current carrying capacity, making them suitable for low-power applications with general performance requirements. The Laminated Bus Bar for IGBT Based Motor Drive achieves electrical isolation by insulating two or more layers of copper busbars, and then integrates them through a process to form a flat cross-section. This not only increases the area of the conductive layer, improves the heat dissipation surface and current carrying capacity under the same current cross-section, but also greatly reduces the distributed inductance of the circuit by canceling the magnetic field generated by the reverse current of adjacent conductive layers. Its inductance is much lower than the other three connection methods. Considering system cost, reliability, and safety comprehensively, it is a better choice.

In summary, the Laminated Bus Bar for Hign Frequency Inverter has demonstrated significant value in medium to high power converter scenarios due to its low inductance, high reliability, convenient installation, excellent heat dissipation and current carrying performance. Compared to traditional busbars and other connection methods, it has stronger overall competitiveness. However, it should be noted that the Laminated Bus Bar for Variable Frequency Drive has slightly higher manufacturing costs compared to ordinary copper bars, and due to the need for specialized molds for its processing, subsequent changes to the copper bar structure may require synchronous modifications or even re-molding, resulting in insufficient flexibility. Therefore, in practical applications, it is recommended to carry out the processing and production of laminated busbars after fully determining the copper bar design scheme, completing the prototype stage demonstration and structural shaping, in order to reduce the cost and cycle loss caused by design changes and fully leverage its technical advantages.

If you want to know about the selection, processing, and application adaptation of Laminated Copper BusBar, please feel free to consult us at any time. We will provide professional technical solutions and adaptation suggestions, and look forward to working together with you.