Mitsubishi Electric Corporation

Morishige Minobe

Ryuichi Takiguchi

Takanori Komatsu

Satoru Nakada

Shunta Kashima

Shuhei Niikura

Toshinori Tanaka

Seiji Watanabe

Yusuke Morita

Rikio Kondo

Naohiro Motoishi

Masaya Sakai

Provided is an elevator device including a main rope configured to support a car and a counterweight, a hoisting machine configured to be driven with the main rope wound therearound, a hoisting-machine controller configured to control the hoisting machine, a car brake controller configured to control a car brake device configured to apply a load to car rails to control raising and lowering of the car, and a vibration detection device configured to detect vibration of the car. When the vibration of the car is detected based on an output signal from the vibration detection device under a running state in which the hoisting-machine controller controls drive of the hoisting machine, the car brake controller controls the car brake device to generate a braking force until the vibration becomes smaller than a set value.

Elevator device

An excitation winding is wound around each tooth of a detecting stator core. First output winding and second output winding are wound around mutually different teeth while avoiding winding of the output windings with the same phase around two teeth adjacent to each other in a circumferential direction. When the number of pole pairs of the excitation winding is M that is an integer equal to or greater than 1 and the number of salient poles of a detecting rotor is N that is an integer equal to or greater than 1, a spatial distribution of the number of turns in each of the first and second output winding is obtained by a function represented by a sine wave of a spatial order |M&#xb1;N|. An error spatial order &#x3b4; represented by |M&#x2212;|M&#xb1;N&#x2225; and an error spatial order &#x3b5; represented by |&#x3b4;&#x2212;M| are values other than 1 and 2.

Rotation angle detector, rotating electrical machine, and elevator hoisting machine

In a resolver, a detecting stator core includes a first detection winding group, a second detection winding group, and a plurality of excitation windings. The first detection winding group includes a plurality of first windings as detection windings. The second detection winding group includes, as detection windings, a plurality of second windings different from the first windings in the phase of the detection voltage. The excitation windings are each wound around one of teeth of the detecting stator core. Each first winding and each second winding are wound around different teeth from each other without being wound around the same tooth. The detection winding and the excitation winding that are wound around the same tooth are arranged so as to be separated from each other in a radial direction.

Resolver, rotating electrical machine, and elevator hoisting machine

In a reference state of a rotation angle detector, plural first output coils include first output coils having the number of windings of Ai and Aj, plural second output coils include second output coils having the number of windings Bk and Bm. The rotation angle detector includes at least one configuration from among: a configuration in which the numbers of windings of the first and second output coils are the same numbers of windings as in the reference state, with the exception that the number of windings Ai is the number of windings Ai&#xb1;a or the number of windings Aj is the number of windings Aj&#xb1;a; and a configuration in which the number of windings Bk is the number of windings Bk&#xb1;b or the number of windings Bm is the number of windings Bm&#xb1;b.

Rotation angle detector, rotary electrical machine and elevator hoisting machine

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Chiyoda-ku, Japan

Morishige Minobe