Title:
Load control, a protection system, its operation, and directions for use
Document Type and Number:
Japanese Patent JP5953099
Kind Code:
B2
Abstract:
A control and protection system has a DC terminal (DCT), for connection to a DC bus (DCB), a load terminal (LT) for connection to a LOAD, a ground terminal (GT) for connection to an external ground bus (EGB), and an INPUT terminal for receiving ON/OFF commands. An internal ground bus (IGB) of the system is normally coupled to the EGB via the GT. But if a ground fault disconnects the GT from the EGB, the system automatically couples the IGB to the LT, thereby providing a synthetic ground that facilitates continued operation of the system and any peripheral circuits coupled between the DCB and the GT. Any peripheral circuit current passing through the system to the EGB is prevented from causing improper operation of the LOAD by automatically adjusting a series impedance that it passes through between the GT and the LT before reaching the LOAD and EGB.
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Inventors:
Thierry Shikar
Application Number:
JP2012100849A
Publication Date:
July 20, 2016
Filing Date:
April 26, 2012
Export Citation:
Assignee:
Freescale Semiconductor, Inc.
International Classes:
H02H11/00
Domestic Patent References:
| JP56966A | ||||
| JP847168A | ||||
| JP9121444A | ||||
| JP200965756A | ||||
| JP2009165113A |
Foreign References:
| US6135096 | ||||
| US6246557 | ||||
| US20070103988 | ||||
| US20110057592 |
Attorney, Agent or Firm:
Tadashige Ito
Tadahiko Ito
Shinsuke Onuki
Tadahiko Ito
Shinsuke Onuki
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