Inventor

UMIDA HIDETOSHI

JP18 patents

⚠️ This page may combine multiple inventors who share the name “UMIDA HIDETOSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

UMIDA HIDETOSHI

FUJI ELECTRIC CO LTD

Speed sensorless vector control apparatus

Control apparatus for variably controlling speed induction motor

Variable speed controlling device for induction motor

Variable speed control apparatus for induction motor

Motor vibration control device and method for matching a motor speed detected value with a motor speed reference value

Parameter identifier

Variable speed controller for an induction motor

Control apparatus for a variable speed motor

Gate drive circuit

PWM power converter

Method and apparatus for controlling an AC motor and detecting malfunctions

Apparatus for driving an AC motor at variable speeds

Variable-speed control method and apparatus for AC motor

Variable speed controller for an AC motor

Control apparatus for AC motor

Variable-speed controlling device for use with an induction motor

Inverter that adjusts voltage command values and control method of inverter

FUJI ELECTRIC SYSTEMS CO LTD

Driving apparatus for driving multiple induction motors