Title:
DISCHARGE CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2015/004948
Kind Code:
A1
Abstract:
The purpose of the invention is to reduce power consumption during normal operation time, quickly discharge the charge stored in a smoothing capacitor during discharge control time, and allow the withstanding voltage and rating power of circuit elements involved in discharging to be low.
A discharge control device comprises: an inverter (10) for performing power conversion between the DC power of a high voltage DC power supply (11) and AC power; a smoothing capacitor (4) for smoothing the voltage (Vdc) between the positive and negative electrodes on the DC side of the inverter (10); a low voltage DC power supply (8) connected in parallel with the smoothing capacitor (4) and generating the DC power of a voltage lower than that of the high voltage DC power supply (11); a discharge circuit (5) connected between the positive and negative electrodes of the low voltage DC power supply (8); and a discharge control unit (25) for executing a discharge control. In the discharge control device, the discharge circuit (5) is constituted by a discharge resistor (51) and a discharge control switch (53) forming a series circuit, and the discharge control unit (25) controls the discharge control switch (53) to be in a non-conducting state while the discharge control is not being executed and to be in a conducting state while the discharge control is being executed.
Inventors:
TAKAKURA YUJI (JP)
NAKAMURA YASUSHI (JP)
NAKAMURA YASUSHI (JP)
Application Number:
PCT/JP2014/057305
Publication Date:
January 15, 2015
Filing Date:
March 18, 2014
Export Citation:
Assignee:
AISIN AW CO (JP)
International Classes:
H02M1/00; H02M7/48; B60L3/00
Foreign References:
| JP2011234507A | 2011-11-17 | |||
| JP2005073399A | 2005-03-17 | |||
| JP2009232537A | 2009-10-08 | |||
| JP2001240322A | 2001-09-04 |
Attorney, Agent or Firm:
R&C IP LAW FIRM (JP)
Patent business corporation R&C (JP)
Patent business corporation R&C (JP)
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