Meeting regulatory requirements for mission-critical and non-mission-critical rolling stock power supplies

All the electronics in rolling stock is subject to challenging environmental conditions, from high temperatures in confined spaces to the heavy vibration felt by body- or axle-mounted systems. Power supplies are no exception, and must comply with relevant European or worldwide railway systems standards.

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Keeping the noise down: Converter and inverter output filtering

Most modern power conversion topologies use switched-mode techniques for highest efficiency and smallest size and cost. Inevitably, switching noise is produced and output filters are required to minimise EMI and provide reliable operation of the powe...

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Selecting DC-link capacitors in power converters

‘DC-link’ capacitors feature in many power conversion topologies and must be chosen carefully to give the best trade-off between cost, size and performance. ...

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Input filtering and protection for switched mode inverters and converters

Inverters and converters have become basic building blocks for many modern power applications. These applications must meet statutory and practical requirements for input EMI filtering and protection against injury to personnel and equipment...

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