发明名称 |
APPARATUS FOR CALCULATING ROTATIONAL POSITION OF ROTARY MACHINE |
摘要 |
In a system, a superimposing element sets a command value vector of a high-frequency voltage signal and superimposes the high-frequency voltage signal with the command value vector on an output voltage of an inverter. The high-frequency voltage signal has a frequency higher than an electrical angular frequency of a rotary machine. The command value vector is correlated with a measured high-frequency component value of a current signal flowing in the rotary machine. A calculating element calculates a rotational angle of the rotary machine based on the measured high-frequency component value of the current signal flowing in the rotary machine. A reducing element controls at least one of the inverter and a direct voltage power supply to reduce a difference due to the dead time between the command value vector and a vector of a high-frequency voltage signal to be actually superimposed on the output voltage of the inverter.
|
申请公布号 |
US2012206077(A1) |
申请公布日期 |
2012.08.16 |
申请号 |
US201213372638 |
申请日期 |
2012.02.14 |
申请人 |
YONESHIMA HIROKO;AOKI YASUAKI;YOSHIDA HIDEJI;DENSO CORPORATION |
发明人 |
YONESHIMA HIROKO;AOKI YASUAKI;YOSHIDA HIDEJI |
分类号 |
H02P6/18 |
主分类号 |
H02P6/18 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|