////// TRACTION POWER SYSTEMS

EFFICIENT-REV

Reversible controlled converters

EFFICIENT-REV / REVERsIblE CoNTRollEd CoNVERTERs2

GENERAL INFORMATIONCombining our know-how in traction rectifiers with the latest energy recovery technologies, sécheron is now able to offer double converters for fully controlled reversible dC substations.

With multiple possible configurations, these systems can handle the asymmetrical power flow of traction acceleration and braking while maintaining a stable dC voltage characteristic in a narrow voltage range.

The power flow of a traction substation is typically highly asymmetrical, that is, it is three or four times more in acceleration (or rectification) mode than in braking (or inversion) mode. sizing independently the inverter and rectifier ensures the best possible fit for the customer specification.

MAIN BENEFITSMAIN BENEFITS

D breaking energy recovery.

D Modular design, designed for easy maintenance.

D Multiple configurations available with different levels of redundancy and independence of rectifier and inverter functions.

D Rectifier and inverter elements independently dimensioned according to the needs of the customer project.

D system design and protection coordination with sécheron switchgear to enhance reliability.

D Robust thyristor rectifier design ensures reliable supply of the dC line.

D Avoids voltage drops, like controlled rectifier.

Double Converter

Transformer

12-pulseThyristor Bridge RC filters

INV ACCB(withrawable)

Autotransformer

AC Reactors

DC Filters

Reverse-blocking

Diode

Pre-charge

IGBT bridges

Inverter

Rectifier

Reversible controlled converter

INV DCCB

DCCB

MVCB

Smoothing coil*

Off-load switches*

Off-load Switch*

Negativeswitch rec

Negativeswitch inv

Smoothing coil*

* Optional

EFFICIENT-REV / REVERsIblE CoNTRollEd CoNVERTERs 3

REVERSIBLE CONTROLLED CONVERTER RANGE

sécheron provides engineering support to ensure an optimized investment in fixed installation assets based on customer specifications.

OPTIMIZED INVESTMENT

750 V 1500 V

Rectifier Inverter Rectifier Inverter

Standard reversible controlled converter range

Rated dC voltage [V] 750 1500

Rated power [kW] 2000 500 4000 1000

Reference dC voltage [V] * 750 825 1500 1600

Voltage setting range [V] * 716-775 760-850 1450-1530 1550-1640

AC frequency [Hz] 50/60

overload duty Up to Class VII Class VI Up to Class VII Class VI

Efficiency > 98 % > 94 % > 98 % > 94 %

Power factor > 0.9 ≈ 1 > 0.9 ≈ 1

Type of control Phase control PWM Phase control PWM

Type of cooling Natural air Forced air Natural air Forced air

IP degree IP31

Max. ambient temperature [°C] 40 (without derating)

Noise level [db] 58 @ 1 m 65 @ 1 m 58 @ 1 m 65 @ 1 m

Insulation levels Tested for Cat 3 Power Frequency Withstand Voltage levels according to IEC 61992-1 (other insulation levels upon request)

Applicable standards IEC 61000, EN 50328, IEEE 519, EN 50121-5, IEC 61992-1

/// TRANSFORMER - REVERSIBLE CONTROLLED CONVERTER GROUP

Consulting and support for transformer and autotransformer specifications, manufacturing and FAT are provided. Combined tests can be offered and organized upon request.

/// PROTECTION AND RELIABILITY

The protective devices present in the reversible controlled converter, both for the inverter and the controlled rectifier, are carefully coordinated to ensure optimal protection and compatibility. breakers, brake choppers and other protective devices are configured to ensure safety and to preserve the acquired assets. Additional switchgear can be included depending on the required level of operational independence between inversion and rectification functions.

/// REMOTE CONTROL, MONITORING AND DIAGNOSTICS

The reversible controlled converter includes a central sEPCos system, allowing connection to all types of communication bus and protocols.

* Other ratings upon request, according to the needs of the customer project.

Sécheron SA

Rue du Pré-Bouvier 251242 Satigny - Geneva

CH-Switzerland

www.secheron.com

Tel: +41 (0)22 739 41 11Fax: +41 (0)22 739 48 11substations@secheron.com

This document is not contractual and contains information corresponding to the level of technology at the date of printing. Sécheron reserves the right to modify and/or improve the product, whose characteristics are described in these documents, as required by new technology at any time. It is the purchaser’s responsibility to inform himself, no matter what the circumstances, of

the product’s maintenance conditions and requirements. Sécheron reserves all rights, especially those arising from our “General Delivery Conditions”.

Copyright© 2018 Sécheron SA

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