公开(公告)号：JP2008220148A

公开(公告)日：2008-09-18

申请号：JP2007232989

申请日：2007-09-07

Applicant: Denso Corp ,  株式会社デンソー

Inventor： AKAMA SADAHIRO ,  AZUMA HIDEJI ,  UEDA NOBUTADA ,  OSADA KIYOSHI ,  OTAKE AKIYA ,  KURODA MASAHIRO

IPC: H02P6/18

Abstract: PROBLEM TO BE SOLVED: To solve the problem that it is difficult to acquire information on the electrical angle of a multi-phase rotary machine with high accuracy, based on the comparison between the induced voltage of the multi-phase rotary machine and a reference voltage. SOLUTION: Comparison signals PU, PV, and PW are obtained by comparing terminal voltages vu, vv, vw of a brushless motor with the reference voltage vref on the basis of the magnitude relation. Based on the coincidence between a 3-bit signal (composite signal PS), obtained by logically synthesizing the comparison signals PU, PV, PW and a composite signal (expectation signal) assumed when a zero-cross timing is detected in the operating state of a switching element, a detection signal Qs at the zero-cross timing is inverted. COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：为了解决难以根据多相旋转机的感应电压与多相旋转机的电角度的比较而获得高精度的电角度的信息的问题 参考电压。 解决方案：比较信号PU，PV和PW是通过将无刷电动机的端子电压vu，vv，vw与基准电压vref进行比较而获得的。 基于通过逻辑合成比较信号PU，PV，PW获得的3位信号（复合信号PS）与在检测到零交叉定时的复合信号（期望信号）之间的一致性， 开关元件，零交叉定时的检测信号Qs反转。 版权所有（C）2008，JPO＆INPIT

公开(公告)号：JP2008193873A

公开(公告)日：2008-08-21

申请号：JP2007028668

申请日：2007-02-08

Applicant: Denso Corp ,  株式会社デンソー

Inventor： KURODA MASAHIRO ,  AZUMA HIDEJI ,  UEDA NOBUTADA ,  AKAMA SADAHIRO ,  OSADA KIYOSHI ,  OTAKE AKIYA

IPC: H02P6/18 ,  H02P6/16

Abstract: PROBLEM TO BE SOLVED: To avoid the problem that, when an inverter 12, in which each phase of a brushless motor 10 and each of a positive electrode and a negative electrode of a battery 14 are connected to each other by switching elements SW1-SW6 and each diode D1-D6 is connected to each switching element SW1-SW6 in parallel, is operated so as to control the brushless motor 10, zero-cross timing that an induced voltage of the brushless motor 10 becomes a reference voltage Vref is included in a period during which a current flows in each diode D1-D6. SOLUTION: A controller for a multi-phase rotary electric machine is configured to execute processing for maintaining all of the switching elements SW1, SW3, and SW5 on the upper side of each arm or all of the switching elements SW2, SW4, and SW6 on the lower side of each arm in an off-state over a prescribed period of time when operation of the switching elements SW1-SW6 is switched. COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题为了避免这样的问题：当无刷电动机10的各相和电池14的正极和负极中的每一相通过开关元件彼此连接的逆变器12 SW1-SW6和每个二极管D1-D6并联连接到各个开关元件SW1-SW6，以便控制无刷电动机10，使得无刷电动机10的感应电压成为基准电压Vref的零交叉定时 被包括在每个二极管D1-D6中电流流动的时段。 解决方案：用于多相旋转电机的控制器被配置为执行用于维持每个臂的上侧或所有开关元件SW2，SW4的所有开关元件SW1，SW3和SW5的处理， 和SW6在开关元件SW1-SW6的动作切换的规定时间内处于断开状态。 版权所有（C）2008，JPO＆INPIT

公开(公告)号：JP2008193811A

公开(公告)日：2008-08-21

申请号：JP2007025840

申请日：2007-02-05

Applicant: Denso Corp ,  株式会社デンソー

Inventor： AZUMA HIDEJI ,  UEDA NOBUTADA ,  AKAMA SADAHIRO ,  OSADA KIYOSHI ,  OTAKE AKIYA ,  KURODA MASAHIRO

IPC: H02P6/18 ,  H02P6/16

Abstract: PROBLEM TO BE SOLVED: To solve the problem wherein it is difficult to discriminate between an abnormal state, where it is difficult to control a rotational state and a rotational ripple state caused by load ripple, etc. , based on the zero-cross timing, when induced voltage is based on the timing that is detected on the terminal voltages vu, vv and vw of a brushless motor 10 and the reference voltage vref that cross zero. SOLUTION: When the zero-cross timing appears continuously on the side of phase lead l or phase lag by more than a permitted period and the detection of zero-cross timing, based on the agreement between the terminal voltages vu, vv and vw and the reference voltage vref is permitted, the controller decides it as being an uncontrollable step-out state. COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题为了解决难以区分由负载波动等引起的难以控制旋转状态和旋转纹波状态的异常状态的问题， 当感应电压基于在无刷电动机10的端子电压vu，vv和vw上检测的定时以及与零电平相关的参考电压vref时的交叉定时。 解决方案：根据端子电压vu，vv和Vu之间的一致性，当零交叉定时在相位引线1或相位滞后一侧出现超过允许的周期和检测零交叉定时时， vw并且允许参考电压vref，则控制器将其判定为不可控制的退出状态。 版权所有（C）2008，JPO＆INPIT

公开(公告)号：JP2008141828A

公开(公告)日：2008-06-19

申请号：JP2006323947

申请日：2006-11-30

Applicant: Denso Corp ,  株式会社デンソー

Inventor： AKAMA SADAHIRO ,  AZUMA HIDEJI ,  UEDA NOBUTADA ,  KURODA MASAHIRO ,  OSADA KIYOSHI ,  OTAKE AKIYA

IPC: H02P6/12 ,  H02P6/18

Abstract: PROBLEM TO BE SOLVED: To restore drive control without stopping the rotation of a motor at a stage before a brushless DC motor driven by a sensorless system comes to a complete step-out. SOLUTION: A step-out monitoring circuit 7 of a motor driving device 1 detects a sign that the brushless DC motor 2 is on the verge of shifting to a step-out state by monitoring the rotation state of the motor 2. When such a sign is detected, the motor is controlled in such a way that a conduction control circuit 4 stops driving the motor 2 temporarily to put it into a free running state before resuming the drive of the motor 2. COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：在由无传感器系统驱动的无刷直流电动机达到完全退出之前的阶段，恢复驱动控制而不停止电动机的旋转。 解决方案：电动机驱动装置1的步出监视电路7通过监视电动机2的旋转状态来检测无刷直流电动机2正在转移到跳出状态的边界的迹象。当 检测到这样的符号，电动机被控制为使得导通控制电路4暂时驱动电动机2，使其恢复到电动机2的驱动之前的自由运行状态。版权所有（C） ）2008，JPO＆INPIT