CONTROLLER FOR ELECTRIC VEHICLE
申请
(
专利
)
号:
JP199********
申请日:
1988-01-06
专利号:
JPH07147706A
公开公告日:
1995-06-06
主分类号:
B60L13/03
分类号:
B60L13/03
申请权利人:
HITACHI LTD
发明设计人:
SEKIZAWA
TOSHIHIKO;
MATSUMURA
YASUYUKI;
YASUDA MAKOTO
公开国代码:
JP
申请国代码:
JP
优先权国家:
JP
优先权:
19940808 JP
18565094
摘
要:
摘
要
附
图:
PURPOSE:To compensate the torque
fluctuation of an electric vehicle effectively
by detecting the reaching of the power
factor and output voltage of a power
converter to a predetermined maximum
value and adjusting a frequency control
means in response to a detected power
factor in response to an output.
CONSTITUTION:A pulse generator 10 is
connected to a wheel 8, and speed
frequency is converted into speed voltage
fT by a speed detector 11. On the other
hand, the slip-frequency fs setter 12 of a
linear induction motor is mounted, and
f=fT+ or -fs is arithmetically operated by a
frequency controller 13. The frequency
command (f) is input to a PWM controller
14, and the operating frequency of an
inverter 5 is determined. The frequency
command (f) is input to a voltage
controller 15, converted into a voltage
command V so as to keep the ratio V/f of
voltage V to frequency (f) constant, and
input to the PWM controller 14. The