DRIVING CIRCUIT OF THREE-PHASE DC MOTOR, COOLING DEVICE USING THE SAME, AND ELECTRONIC APPARATUS

DRIVING CIRCUIT OF THREE-PHASE DC MOTOR, COOLING DEVICE USING THE SAME, AND ELECTRONIC APPARATUS

To provide a driving circuit capable of stopping operation in short time.SOLUTION: A bridge circuit 230 is connected to a fan motor 102. A control logic circuit 210, in response to a stop instruction, fixes an upper arm of a source phase off where current outflows in the bridge circuit 230, and keep...

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Bibliographische Detailangaben
Hauptverfasser: SHIMIZU HIROYUKI, NOYA JOJI, SANO SHINSUKE, SAEGUSA YUJI
Format: Patent
Sprache:eng ; jpn
Schlagworte:
CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS
CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
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Beschreibung
Zusammenfassung:To provide a driving circuit capable of stopping operation in short time.SOLUTION: A bridge circuit 230 is connected to a fan motor 102. A control logic circuit 210, in response to a stop instruction, fixes an upper arm of a source phase off where current outflows in the bridge circuit 230, and keeps states of other upper arms and lower arms (φ11). The control logic circuit 210 fixes the upper arms and the lower arms of all the bridge circuit 230 off (φ12).SELECTED DRAWING: Figure 4 【課題】短時間で動作を停止可能なモータの駆動回路を提供する。【解決手段】ブリッジ回路２３０は、ファンモータ１０２と接続される。コントロールロジック回路２１０は、停止指示に応答して、ブリッジ回路２３０において電流が流出するソース相の上アームをオフに固定し、その他の上アームおよび下アームの状態は維持する（φ１１）。コントロールロジック回路２１０はその後、ブリッジ回路２３０のすべての相の上アームおよび下アームをオフに固定する（φ１２）。【選択図】図４