Title:
PROTOCOL FOR VOLTAGE SURGE SUPPRESSION AND RECOVERING FROM ENERGY SURGE
Document Type and Number:
WIPO Patent Application WO/2010/067679
Kind Code:
A1
Abstract:
Conventionally, countermeasures have been taken to alleviate voltage surges with a motor that is driven by an inverter, wherein a filter is inserted so as to minimize an excessive voltage surge that is caused by a switching operation of a switching element within the inverter and occurs upon the power supply terminal of the motor. A problem, however, is that, particularly with applications that generate large drive currents, the volume of the inductor increases, and power loss, which occurs in the inductor or the resistor that configure the filter circuit, grows in the extreme, leading to an increase in the size of the overall device and an increase in the amount of power loss. Disclosed is a protocol for suppressing voltage surges and recovering from energy surges without loss of power, a configuration of a representative embodiment whereof has a main line, between the inverter and the motor, branching from each respective terminal thereof and connecting to an auxiliary line at each branch thereof, an alternating current terminal of a rectifier connected to the auxiliary electric line, a capacitor further connected upon both ends of a direct current terminal of the rectifier, and finally, the direct current terminal thereof being connected to a direct current terminal of the inverter.
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Inventors:
NAKAMURA MASANOBU (JP)
SHIMIZU TOSHIHISA (JP)
SHIMIZU TOSHIHISA (JP)
Application Number:
PCT/JP2009/069085
Publication Date:
June 17, 2010
Filing Date:
November 10, 2009
Export Citation:
Assignee:
OKI ELECTRIC CABLE (JP)
UNIV TOKYO METROPOLITAN (JP)
NAKAMURA MASANOBU (JP)
SHIMIZU TOSHIHISA (JP)
UNIV TOKYO METROPOLITAN (JP)
NAKAMURA MASANOBU (JP)
SHIMIZU TOSHIHISA (JP)
International Classes:
H02M7/48; H02H9/04
Foreign References:
| JPH0823682A | 1996-01-23 | |||
| JPH0638543A | 1994-02-10 | |||
| JPS6343526A | 1988-02-24 | |||
| JP2000166254A | 2000-06-16 | |||
| JPH07337033A | 1995-12-22 | |||
| JP2006080215A | 2006-03-23 |
Attorney, Agent or Firm:
NAKAMURA MAMORU (JP)
Nakamura 守 (JP)
Nakamura 守 (JP)
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