Key consideration in bus bar design for inverter of railway power supply

Inverter is widely used in Balanced-Power-Supply-Unit, Co-Phase-Power-Supply-Equipment, Energy-Dispatching-Equipment, High-Power-Test-Power-Supply-Device, Smart-Electrical-Resolver, Inverter power supply, etc. for railway power supply system.

Both high power density, high reliability, and low inductance are key criteria to holistic inverter designs. 

In high power scenarios, which include but not limit locomotive traction, railway power supply, photovoltaic, wind power inverter, it is necessary to minimize both concentrated loss and stray-load loss in the course of power transmission. 

One of the ongoing challenges toward inverter systems development is to customize integrated laminated bus bar. Laminated bus bar must be robust enough to withstand high voltage and high current. In the mean time, laminated bus bar must be low inductance to minimize switching loss of the both inverter and converter of railway power supply system.

The design for Insulation Coordination between bus bars considers both electrical clearance and creepage distance mainly. Electrical stresses and environmental conditions must be taken into consideration while sizing insulation of laminated bus bar.

In addition, oversizing insulation design is unaccepted. In the meantime, insulation should be robust enough against being broken under severest working conditions.

Why choose NORTHBRIDGES bus bars for your Traction converter and Power supply system application?

Bus bar leading manufacturers

The working conditions of Rail and Transportation are hush. The environmental conditions such as Shock & Vibration, Ambient Temperature, Humidity, Altitude etc. demand Laminated bus bars to be highly durable. The vehicles must always operate safely and reliably. 

Our engineers have extensive knowledge and experience on LBB design for Rail and transportation applications. The quality of our design and manufacturing is ensured and compliant to IRIS (International Railway Industry Standard) quality system. 

An example of our LBB solution for power supply converter for railway power station. The rated working voltage is 2800 V. This design effectively solved the difficulty of limited module space and weight requirements, while meeting the electrical specifications. 

Another example of our LBB design for traction converter. Our Engineers used the combination of NORTHBRIDGES's edge-closed LBB and powder-painted LBB solutions. It is a compact design which effectively saved space while enhanced the electrical performance. 

A typical use of NORTHBRIDGES powder painted bus bar in traction converters. The bus bar's coating thickness is 2 mm. It can withstand working voltage 9,600 V.

Choosing NORTHBRIDGES bus bars for your traction converter and power supplying system

As demand for electricity accelerates across EV infrastructure, renewable energy and industries, robust and scalable power distribution systems become even more essential. NORTHBRIDGES’s proven bus bar solutions are engineered to ensure safety, reliability and efficiency in the expansion of modern power distribution networks.