SOFT STARTER FOR ELECTRIC MOTOR
PROBLEM TO BE SOLVED: To provide a compact, semiconductor type motor starter that is manufactured easily. SOLUTION: The semiconductor type motor starter (10) includes: semiconductor power switches (46, 48) clamped between a pair of buses (32, 42); an electromagnetic relay (50) fitted in an opposite...
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| creator | BECKER JAMES A VON ECKROTH KURT WIELOCH CHRISTOPHER J |
| description | PROBLEM TO BE SOLVED: To provide a compact, semiconductor type motor starter that is manufactured easily. SOLUTION: The semiconductor type motor starter (10) includes: semiconductor power switches (46, 48) clamped between a pair of buses (32, 42); an electromagnetic relay (50) fitted in an opposite direction between an input end (36) and an output end (44); a radiator (64); and a cooling fan (66) installed between the electromagnetic relay (50) and the radiator (64). A pair of magnetic pins (124) for converging magnetic flux at a current sensing region and a Hall effect sensor for sensing a current at the current sensing region are provided at the current sensing region of the buses (32). In a motor operation mode, current is shunted from the semiconductor power switches (46, 48), thus forming a current path essentially in a straight line via the electromagnetic relay (50), reducing power loss, and minimizing an increase in heat. COPYRIGHT: (C)2009,JPO&INPIT |
| format | Patent |
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SOLUTION: The semiconductor type motor starter (10) includes: semiconductor power switches (46, 48) clamped between a pair of buses (32, 42); an electromagnetic relay (50) fitted in an opposite direction between an input end (36) and an output end (44); a radiator (64); and a cooling fan (66) installed between the electromagnetic relay (50) and the radiator (64). A pair of magnetic pins (124) for converging magnetic flux at a current sensing region and a Hall effect sensor for sensing a current at the current sensing region are provided at the current sensing region of the buses (32). In a motor operation mode, current is shunted from the semiconductor power switches (46, 48), thus forming a current path essentially in a straight line via the electromagnetic relay (50), reducing power loss, and minimizing an increase in heat. 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SOLUTION: The semiconductor type motor starter (10) includes: semiconductor power switches (46, 48) clamped between a pair of buses (32, 42); an electromagnetic relay (50) fitted in an opposite direction between an input end (36) and an output end (44); a radiator (64); and a cooling fan (66) installed between the electromagnetic relay (50) and the radiator (64). A pair of magnetic pins (124) for converging magnetic flux at a current sensing region and a Hall effect sensor for sensing a current at the current sensing region are provided at the current sensing region of the buses (32). In a motor operation mode, current is shunted from the semiconductor power switches (46, 48), thus forming a current path essentially in a straight line via the electromagnetic relay (50), reducing power loss, and minimizing an increase in heat. COPYRIGHT: (C)2009,JPO&INPIT</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | BASIC ELECTRIC ELEMENTS CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRIC SWITCHES ELECTRICITY EMERGENCY PROTECTIVE DEVICES GENERATION MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PHYSICS RELAYS SELECTORS TESTING |
| title | SOFT STARTER FOR ELECTRIC MOTOR |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-28T13%3A26%3A52IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-epo_EVB&rft_val_fmt=info:ofi/fmt:kev:mtx:patent&rft.genre=patent&rft.au=BECKER%20JAMES%20A&rft.date=2009-07-16&rft_id=info:doi/&rft_dat=%3Cepo_EVB%3EJP2009156874A%3C/epo_EVB%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true |