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power electronics specialists conference | 1977

Development of high-speed AC elevator control with thyristors

Akinori Watanabe; Nobuo Mitsui; Seiya Shima; Katsu Komuro

The high-speed AC elevators with a speed of 105 mpm (350 fpm) were developed by applying thyristors to their control. The acceleration of the elevators is controlled by two-phase primary voltage control of AC motor, while their deceleration is regulated by DC braking through thyristor convertor. The new technology to enable continuous torque control from motoring to braking has been developed by the Push-Pull characteristics of the control for the higher and lower speed motors. Thus, complex DC motor and motor-generator were replaced by simple AC motor and economical control system was realized.


Archive | 1988

Current-type converter apparatus

Sadao Hokari; Kiyoshi Nakamura; Katsu Komuro; Takeki Ando; Hiromi Inaba; Shigeta Ueda


Archive | 1980

AC Elevator control system

Nobuo Mitsui; Yasuyuki Maeda; Tomiaki Kurihara; Seiya Shima; Takanobu Hatakeyama; Katsu Komuro


Archive | 1984

Controller for AC elevator

Sadao Hokari; Takamasa Hori; Katsu Komuro; Takanobu Hatakeyama; Toshiroo Narita; Yasunori Katayama; Noboru Arahori


Archive | 1975

Electric motor controlling system

Katsu Komuro; Nobuo Mitsui


Archive | 1983

A.C. lift control system

Takanobu Hatakeyama; Katsu Komuro; Sadao Hokari; Toshiro Narita; Morio Kanesaki; Yasunori Katayama


Archive | 1971

Control apparatus for an elevator car

Nobuo Mitsui; Takanobu Hatakeyama; Katsu Komuro


Archive | 1986

Apparatus for controlling AC elevators

Nobuo Mitsui; Yoshio Sakai; Masao Nakazato; Mitsuyuki Honbu; Shigeta Ueda; Seiya Shima; Katsu Komuro; Takeki Ando; Akiteru Ueda; Kazuhiko Sasaki; Toshiaki Kurosawa


Archive | 1978

THREE PHASE CONTROLLING SYSTEM

Yasuyuki Maeda; Nobuo Mitsui; Tadao Kameyama; Akinori Watanabe; Katsu Komuro; Sadao Hokari


Archive | 1976

Levelling apparatus for AC elevator

Yasuyuki Maeda; Nobuo Mitsui; Tadao Kameyama; Katsu Komuro

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