POWER CONVERSION APPARATUS, CONTROL METHOD THEREFOR AND AIR CONDITIONING APPARATUS
PROBLEM TO BE SOLVED: To provide a power conversion apparatus which improves the accuracy of phase interruption discrimination without need for detecting the rotational speed of a rotating type driving motor, and also to provide an air conditioning apparatus equipped with the power conversion appara...
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| creator | MIYAMOTO TETSUO SHIRATORI YUJI HIGUCHI TERUKAZU |
| description | PROBLEM TO BE SOLVED: To provide a power conversion apparatus which improves the accuracy of phase interruption discrimination without need for detecting the rotational speed of a rotating type driving motor, and also to provide an air conditioning apparatus equipped with the power conversion apparatus, and a control method for the power conversion apparatus. SOLUTION: This power conversion apparatus is equipped with a first AC-DC converter part 41 for converting AC voltage of a generator 38 driven by the rotating type driving motor into DC voltage. Further, the apparatus comprises: a DC voltage measuring instrument 54 for measuring output-side DC voltage of the first AC-DC converter 41 within a prescribed period set so as to be included in a constant-speed control period of the rotating type driving motor, where constant speed control is implemented so as to operate at a prescribed rotational speed; and a CPU56 for discriminating the presence of phase interruption on the basis of the measured results of the DC voltage measuring instrument 54. COPYRIGHT: (C)2004,JPO&NCIPI |
| format | Patent |
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SOLUTION: This power conversion apparatus is equipped with a first AC-DC converter part 41 for converting AC voltage of a generator 38 driven by the rotating type driving motor into DC voltage. Further, the apparatus comprises: a DC voltage measuring instrument 54 for measuring output-side DC voltage of the first AC-DC converter 41 within a prescribed period set so as to be included in a constant-speed control period of the rotating type driving motor, where constant speed control is implemented so as to operate at a prescribed rotational speed; and a CPU56 for discriminating the presence of phase interruption on the basis of the measured results of the DC voltage measuring instrument 54. 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SOLUTION: This power conversion apparatus is equipped with a first AC-DC converter part 41 for converting AC voltage of a generator 38 driven by the rotating type driving motor into DC voltage. Further, the apparatus comprises: a DC voltage measuring instrument 54 for measuring output-side DC voltage of the first AC-DC converter 41 within a prescribed period set so as to be included in a constant-speed control period of the rotating type driving motor, where constant speed control is implemented so as to operate at a prescribed rotational speed; and a CPU56 for discriminating the presence of phase interruption on the basis of the measured results of the DC voltage measuring instrument 54. 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SOLUTION: This power conversion apparatus is equipped with a first AC-DC converter part 41 for converting AC voltage of a generator 38 driven by the rotating type driving motor into DC voltage. Further, the apparatus comprises: a DC voltage measuring instrument 54 for measuring output-side DC voltage of the first AC-DC converter 41 within a prescribed period set so as to be included in a constant-speed control period of the rotating type driving motor, where constant speed control is implemented so as to operate at a prescribed rotational speed; and a CPU56 for discriminating the presence of phase interruption on the basis of the measured results of the DC voltage measuring instrument 54. COPYRIGHT: (C)2004,JPO&NCIPI</abstract><edition>7</edition><oa>free_for_read</oa></addata></record> |
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| subjects | APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS BLASTING COMBINED HEATING AND REFRIGERATION SYSTEMS CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS GENERATION HEAT PUMP SYSTEMS HEATING LIGHTING LIQUEFACTION SOLIDIFICATION OF GASES MANUFACTURE OR STORAGE OF ICE MECHANICAL ENGINEERING REFRIGERATION MACHINES, PLANTS OR SYSTEMS REFRIGERATION OR COOLING WEAPONS |
| title | POWER CONVERSION APPARATUS, CONTROL METHOD THEREFOR AND AIR CONDITIONING APPARATUS |
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