MOTOR DRIVE CONTROL DEVICE

To provide a motor drive control device capable of restoring phase current detection of a motor in a three-level inverter from current of a DC portion of an inverter while realizing downsizing/cost reduction.SOLUTION: The motor drive control device comprises: an intermediate potential end side semic...

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Hauptverfasser:	MIYAZAKI HARUYUKI, KYOGOKU AKIHIRO, TSUCHIYAMA YOSHIRO
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	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 CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROL OR REGULATION THEREOF CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION
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Beschreibung
Zusammenfassung:	To provide a motor drive control device capable of restoring phase current detection of a motor in a three-level inverter from current of a DC portion of an inverter while realizing downsizing/cost reduction.SOLUTION: The motor drive control device comprises: an intermediate potential end side semiconductor switch 113u which is provided between an intermediate potential end of a DC power supply apparatus 101 and an input terminal of a three-phase motor 103; and first current detection means 105 provided between the intermediate potential end of the DC power supply apparatus 101 and the intermediate potential end side semiconductor switch 113u. Phase current information of the three-phase motor 103 is restored based on a plurality of current values detected by the first current detection means 105 during a period in which combinations of phases in an ON state of the intermediate potential end side semiconductor switch 113u turning on/off the intermediate potential end of the DC power supply apparatus 101 and the input terminal of the three-phase motor 103 are different, within one period of a carrier signal.SELECTED DRAWING: Figure 1 【課題】本開示は、小型化・低コスト化を実現しつつ、３レベルインバータにおけるモータの相電流検出をインバータの直流部分の電流から復元できるモータ駆動制御装置を提供。【解決手段】直流電源装置１０１の中間電位端と三相モータ１０３の入力端子との間に設けられた中間電位端側半導体スイッチ１１３ｕと、直流電源装置１０１の中間電位端と中間電位端側半導体スイッチ１１３ｕとの間に設けられている第一の電流検出手段１０５とを備え、キャリア信号の一周期内において、直流電源装置１０１の中間電位端と三相モータ１０３の入力端子とをオン／オフする中間電位端側半導体スイッチ１１３ｕがオン状態である相の組み合わせが異なる期間に、第一の電流検出手段１０５が検出した複数の電流値に基づいて、三相モータ１０３の相電流情報を復元するモータ駆動制御装置。【選択図】図１