Drive control apparatus

JPWO2025203262A5Active Publication Date: 2026-06-03MITSUBISHI ELECTRIC CORP
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
MITSUBISHI ELECTRIC CORP
Filing Date
2024-03-26
Publication Date
2026-06-03

AI Technical Summary

Technical Problem

Existing drive control systems for railway vehicles with internal combustion engines fail to initiate engine startup when the supply of DC power to converters is interrupted, such as due to power storage device discharge, malfunction, or disconnection.

Method used

A drive control device with multiple converters, first inverters, and power storage devices is implemented, allowing bidirectional power conversion and utilizing a secondary inverter to convert AC power into DC power when primary converters are not supplied, ensuring engine startup even in power disruptions.

Benefits of technology

Enables reliable engine startup by converting stored AC power into DC power, overcoming power supply interruptions and ensuring consistent operation of internal combustion engines in railway vehicles.

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Abstract

A drive control apparatus (1) for controlling the driving of a railway vehicle that uses a plurality of internal combustion engines (91a, 91b) as a motive power source comprises: a plurality of converters (11a, 11b) which are provided so as to correspond to the internal combustion engines (91a, 91b); a plurality of first inverters (12a, 12b) which are respectively provided for the converters (11a, 11b); and at least one power storage device (13a, 31b) which is connected to the converters (11a, 11b) and the first inverters (12a, 12b). When starting the internal combustion engines (91a, 91b), a first inverter (12a, 12b) connected to a converter (11a, 11b) not being supplied with DC power receives supply of AC power from a first inverter (12a, 12b) connected to a power storage device (13a, 13b) in which the amount of power stored therein is greater than the amount of power for starting the internal combustion engines (91a, 91b), and converts the AC power to DC power and outputs the DC power from a primary terminal (21a, 21b).
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