DRIVE SOURCE CONTROL DEVICE

• Main Authors: MORITA MAKOTO, HACHIYA KOHEI, MASE HISAYASU, TOZU KENJI, TSURUTA MANABU, OKAYAMA NAOKI, TAKAGI KAZUNORI, YANAKA TAKEHIRO
• Format: Patent
• Language: English; Japanese
• Published: 06.04.2017
• Subjects: 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

PROBLEM TO BE SOLVED: To prevent erroneous detection of overcurrent and the like.SOLUTION: A drive source control device according to an embodiment comprises: a three-phase H bridge circuit that drives a drive source; a capacitor provided in parallel with the three-phase H bridge circuit; an overcurrent detection unit provided between the capacitor and a power source for supplying power to the three-phase H bridge circuit and the capacitor; a drive control unit for performing hardware control of turning off a switching element provided in the three-phase H bridge circuit, when the overcurrent detection unit detects overcurrent; and a control unit that, when the overcurrent detection unit detects the overcurrent, performs software control of turning off the switching element provided in the three-phase H bridge circuit before performing abnormality detection for each phase of the three-phase H bridge circuit in a state in which the control of turning off the switching element has been performed.SELECTED DRAWING: Figure 1 【課題】過電流の誤検出等を抑止する。【解決手段】実施形態にかかる駆動源制御装置は、駆動源を駆動させる３相Ｈブリッジ回路と、当該３相Ｈブリッジ回路と並列に設けられたコンデンサと、３相Ｈブリッジ回路及びコンデンサに対して電力を供給する電源と、当該コンデンサと、の間に設けられた過電流検出部と、過電流検出部が過電流を検出した場合に、３相Ｈブリッジ回路に設けられたスイッチング素子をオフにするハードウェア制御を行う駆動制御部と、過電流検出部が過電流を検出した場合に、３相Ｈブリッジ回路に設けられたスイッチング素子をオフにするソフトウェア制御を行った後、３相Ｈブリッジ回路の相毎に、スイッチング素子がオフする制御が行われた状態で、異常の検出を行う制御部と、を備える。【選択図】図１