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 semiconductor switching element, surely with high reliability.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 for turning all second FETs OFF when the energy is in the area of safe operation, and a state detector 125 for detecting first abnormality, i.e., abnormality of the control stage FET, and second abnormality, i.e., abnormality other than that of the control stage FET. Inverter control is turned ON when the state detector 125 is not detecting first abnormality and second abnormality, and turned OFF when first abnormality or second abnormality is detected, a regenerative current is selected among multiple data tables, according to the first abnormality and second abnormality detected in the state detector 125, and then energy is calculated based on the selected regenerative current.SELECTED DRAWING: Figure 11 【課題】半導体スイッチング素子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信頼性高く行うことができるモータ制御装置及を提供する。【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、エネルギーが安全動作領域の領域内になったときに、第２のＦＥＴの全てをＯＦＦする判定部１２２と、制御段ＦＥＴの異常が疑われる第１の異常と制御段ＦＥＴの異常以外の異常が疑われる第２の異常を検出する状態検出部１２５とを具備し、状態検出部１２５が第１の異常及び第２の異常を検出していないときにインバータ制御をＯＮし、第１の異常又は第２の異常を検出したときにインバータ制御をＯＦＦすると共に、状態検出部１２５で検出された第１の異常及び第２の異常に応じて、データテーブルの複数の中から回生電流を選択し、選択された回生電流に基づいてエネルギーを演算する。【選択図】図１１