发明名称 |
Motor control device |
摘要 |
A motor control device includes a control condition storage unit storing at least one of a control condition defined by an equivalent voltage supplied to a three-phase motor and a control condition defined by relationship between the equivalent voltage supplied to the three-phase motor and a frequency of PWM signal, a control condition extracting unit extracting the control condition from the control condition storage unit in response to a temperature of a viscous fluid supplied by a pump having the three-phase motor as a power source, and a PWM controlling unit controlling a switching element included in an inverter circuit based on a PWM signal related to the extracted control condition when the three-phase motor is started. |
申请公布号 |
US8975843(B2) |
申请公布日期 |
2015.03.10 |
申请号 |
US201213489987 |
申请日期 |
2012.06.06 |
申请人 |
Aisin Seiki Kabushiki Kaisha |
发明人 |
Minato Yoshihiko |
分类号 |
H02P6/16;H02P23/12;H02P6/00;H02P7/00;H02P6/20;F04B15/02;F04B17/03;F04B49/06;H02P6/14;H02P6/18 |
主分类号 |
H02P6/16 |
代理机构 |
Buchanan Ingersoll & Rooney P.C. |
代理人 |
Buchanan Ingersoll & Rooney P.C. |
主权项 |
1. A motor control device, comprising:
a control condition storage unit storing at least one of a control condition defined by an equivalent voltage supplied to a three-phase motor and a control condition defined by relationship between the equivalent voltage supplied to the three-phase motor and a frequency of PWM signal; a control condition extracting unit extracting the control condition from the control condition storage unit in response to a temperature of a viscous fluid supplied by a pump having the three-phase motor as a power source; a PWM controlling unit controlling a switching element included in an inverter circuit based on a PWM signal related to the extracted control condition when the three-phase motor is started; and wherein the control condition is defined such that the equivalent voltage becomes lower as the temperature of the viscous fluid is higher, the equivalent voltage being defined by a voltage and a duty ratio of the PWM signal, the voltage corresponding to a pulse amplitude of the PWM signal. |
地址 |
Kariya-shi, Aichi-Ken JP |