Title:
POWER SUPPLY FOR ELECTRIC CAR
Document Type and Number:
Japanese Patent JP3840410
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To prevent the occurrence of an excessive charging current at the time when power of an AC power source is restored after once interrupted when an electric car passes a section, and to prevent stress that is added by a large current to a rectifier and a smoothing capacitor of an inverter main circuit.
SOLUTION: This power supply for an electric car is provided with an inverter main circuit 5 that converts AC into DC and again converts it into arbitrary AC using the AC power source 1; a section detector 8 that detects a power failure and restoration at the section; an inverter controlling circuit 9 that releases an initial charging contactor 2 with a prescribed delay by a power supply interrupting signal from the section detector, that stops the inverter main circuit and closes the initial charging contactor 2 by a power restoration signal from the section detector, and that controls the start of the inverter main circuit. The section is detected under frequency drop and voltage drop every 1/2 cycle of the AC power source.
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Inventors:
Soma Saburo
Application Number:
JP2001372698A
Publication Date:
November 01, 2006
Filing Date:
December 06, 2001
Export Citation:
Assignee:
Toshiba Corporation
International Classes:
B60L9/08; H02M7/48; (IPC1-7): B60L9/08; H02M7/48
Domestic Patent References:
| JP58218801A | ||||
| JP2000197369A |
Attorney, Agent or Firm:
Hidekazu Miyoshi
Iwa Saki Kokuni
Kawamata Sumio
Nakamura Tomoyuki
Masakazu Ito
Shunichi Takahashi
Toshio Takamatsu
Iwa Saki Kokuni
Kawamata Sumio
Nakamura Tomoyuki
Masakazu Ito
Shunichi Takahashi
Toshio Takamatsu