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Power capacitors: TDK releases ModCap™ – a modular capacitor concept for DC link applications

2020-11-04 | Return

TDK Corporation presents ModCap™ − a modular capacitor concept for DC link applications. The newly developed power capacitors are available for rated voltages of 1100 V to 2300 V and cover a 365 µF to 2525 µF capacitance range. The rated currents between 105 A and 180 A are type-conditioned with all types designed for 5 kA recurrent pulse currents. The maximum permitted hot spot temperature is 90 °C.

In contrast to conventional cylindrical designs, the B25645A* capacitor series are cubic in design and available in two versions of either 243 x 169.5 x 90 mm or 258 x 215 x 115 mm. Due to this design, the capacitors can be fitted very close to IGBT modules, thus producing very short lead lengths. This, combined with a very low 14 nH self-inductance of the capacitors, stops any substantial voltage overshooting at the IGBT modules when the current is shut off. As a result, generally no snubber capacitors are needed. This design also makes parallel connections of capacitors easy. Typical applications are compact converters for traction, renewable energies and industrial applications.

The artificial resin-filled plastic housings comply with UL94 V-0. In addition, the fire and smoke formation requirements, in line with IEC 61071, IEC 61881-1, EN 45545-2 HL3 R23, are met. This makes these capacitors well suited for use in trains.

Main applications
Compact converters for traction
Renewable energies
Industrial applications

Main features and benefits
Modular concept
Wide voltage range from 1100 V to 2300 V
Wide capacitance range from 365 µF to 2525 µF
A maximum 90 °C hot spot temperature
Qualified according to IEC 61071, IEC 61881-1, EN 45545-2 HL3 R23 regarding fire and smoke formation
Plastic housing corresponding to UL94 V-0
Further information on the products can be found at www.tdk-electronics.tdk.com/en/modcap_power_capacitors.

Source：http://www.global.tdk.com/