MOTOR CONTROLLER AND ELECTRICALLY-DRIVEN POWER STEERING DEVICE MOUNTING THE SAME

• Main Authors: KOGURE TERUYOSHI, SHIMAKAWA SHIGERU, SUZUKI RYOICHI, KUMAGAI SHIN
• Format: Patent
• Language: English; Japanese
• Published: 04.04.2019
• 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; LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS; MOTOR VEHICLES; PERFORMING OPERATIONS; TRAILERS; TRANSPORTING

To provide a motor controller capable of protecting a motor opening switch, constituted compactly of a FET, reliably.SOLUTION: A motor controller includes a control section 120, a motor rotation number detector 132, an energy calculation part 121 for calculating energy on the basis of the motor rotation number, a determination part 122, a state detector 125 for detecting abnormality, a thermistor 141 for detecting the temperature of a first FET, and a recording device 127 for recording temperature information, first date information and first temperature information at the time of abnormality detection and occurrence of MCU reset, and second date information and second temperature information at the time of reset return. Inverter control is turned ON when abnormality is not detected, and turned OFF when abnormality is detected, temperature detection values and reset dates at the time of reset and reset return are compared, and then a determination is made whether or not the current flowing through the motor is limited, based on the determination results whether or not the finite difference of the occurrence date and the reset date, and the finite difference of the temperature information and the temperature detection values are within prescribed ranges, respectively.SELECTED DRAWING: Figure 14 【課題】ＦＥＴで小型に構成されたモータ開放スイッチの保護を確実に行うモータ制御装置を提供する。【解決手段】制御部１２０と、モータ回転数検出部１３２と、モータ回転数に基づいて、エネルギーを演算するエネルギー演算部１２１と、判定部１２２と、異常の有無を検出する状態検出部１２５と、第１ＦＥＴの温度を検出するサーミスタ１４１と、温度情報、異常検出及びＭＣＵのリセット発生時の第１日時情報及び第１温度情報、並びにリセット復帰時の第２日時情報及び第２温度情報を記録する記録装置１２７とを具備し、異常を検出していないときにインバータ制御をＯＮし、異常を検出したときにＯＦＦし、リセット時及びリセット復帰時の温度検出値及び復帰日時の比較を行い、発生日時と復帰日時との差分、温度情報と温度検出値との差分がいずれも各所定範囲内にあるか否かの判定結果に基づいて、モータに流れる電流を制限するか否かを決定する。【選択図】図１４