| 摘要 |
Comparators of a rotary electric machine control apparatus acquire terminal voltages of each phase, which are developed at junction points between high-potential side FETs and low-potential side FETs, respectively. In switching over ON and OFF of the high-potential side FETs and the low-potential side FETs, a control unit determines a flow direction of a phase current supplied to each phase coil based on a terminal voltage developed in a dead time period, in which a the high-potential side FET and the low-potential side FET forming a pair are both turned off. Thus, the flow direction of each phase current is determined in a simple configuration. |
| 主权项 |
1. A rotary electric machine control apparatus for controlling driving of a rotary electric machine, which includes a winding set formed of plural coils corresponding to plural phases, the rotary electric machine control apparatus comprising:
an inverter including switching elements forming plural switching element pairs, each of which corresponds to each phase of the coils and is formed of a first switching element provided at a high-potential side and a second switching element provided at a low-potential side; and a control unit including a terminal voltage acquisition part, a drive control part and a current flow direction determination part, the terminal voltage acquisition part acquiring a terminal voltage developed at each junction point, which is between the first switching element and the second switching element and connected to one end of the coil of the corresponding phase, the drive control part controlling the driving of the rotary electric machine by controlling ON-OFF operations of the switching elements based on a command current related to the driving of the rotary electric machine, and the current flow direction determination part for determining, at time of an ON-OFF switchover of the first switching element and the second switching element, a current flow direction of an actual current flowing in the coil of the phase corresponding to the terminal voltage based on the terminal voltage developed in a dead time period, in which the pair of the first switching element and the second switching element are both turned off. |
