Title:
CONTROL DEVICE FOR RAILWAY VEHICLES
Document Type and Number:
WIPO Patent Application WO/2020/008572
Kind Code:
A1
Abstract:
A control device (20) that comprises a torque control unit (21) and a circuit control unit (23). The torque control unit (21) switches a switching element in a power conversion unit on and off in accordance with operation commands. If the operation commands include a brake command and the voltage of a filter capacitor is at least a reference voltage, the circuit control unit (23) has a positive correlation with the voltage of the filter capacitor and operates a step-down circuit at a conduction ratio that changes over time in conjunction with the changes over time in the filter capacitor voltage. Furthermore, if the operation command includes a powering command, the circuit control unit (23) operates the step-down circuit when a stop command has been obtained, regardless of the relationship between the sizes of the filter capacitor voltage and the reference voltage.
Inventors:
OTSUBO MICHIO (JP)
EMOTO SHINJI (JP)
EMOTO SHINJI (JP)
Application Number:
PCT/JP2018/025397
Publication Date:
January 09, 2020
Filing Date:
July 04, 2018
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
B60L9/18; B60L3/00
Domestic Patent References:
| WO2011074045A1 | 2011-06-23 |
Foreign References:
| JPH08126101A | 1996-05-17 | |||
| JP2017184448A | 2017-10-05 |
Attorney, Agent or Firm:
KIMURA Mitsuru (JP)
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