Shinko Electric Company, Ltd.

Shinko Denki Kabushiki Kaisha

Kazuo Okubo

Kazumichi Kato

Toshio Miki

Hiroo Mike

Katsuyoshi Nakano

Tetsuyuki Kimura

Junichi Kurokawa

Yushi Sato

Masami Morita

Nobuhiro Saito

Hideki Tamura

Hirosuke Imabayashi

Tomoyuki Matsunaga

Tsutomu Shinya

Yuzo Takakado

Hiroki Kataoka

Kenji Yamaguchi

Kanemichi Murakami

Yoshihiro Ishida

Yoshimi Okada

Masao Kimura

Akira Shiozaki

Tetsunari Kobayakawa

A vertical axis type wind power station and a blade manufacturing process, which can stabilize the turning motions of blades and can raise the power generation efficiency by lightening the blades to smoothen the turning motions of the blades; a structure and method for mounting the wind-driven device of a wind power station, by which the wind-driven device can be easily disposed at the upper portion of a building; and a windbreak wind power plant for breaking the wind by using the vertical axis type wind power stations or wind-driven devices arranged along the shoreline or the like.

Vertical axis type wind power station

The present invention provides an electric generator for achieving the cost reduction of the electric generator itself from the view point of the structure of the electric generator, and the cost reduction of the generation of electricity from the view point of the performance of the electric generator, and a power supply equipment for use in this electric generator.

Generator and power supply for use therein

A power supply unit inclding a batterythat stores electric power used for operations of various devices; a dynamo, a rotation support mechanism, and a rectifying sectionas charging means that converts natural energy into electric energy and supplies electric power of the electric energy to the batteryto be charged; a charging control sectionfor changing over between supply and stop of the electric power from the charging means to the storage means; and a charging control driving unitand a low-voltage charging function of an arithmetic processing partas charging changeover control means that controls the charging control sectionsuch that supply and stop of the electric power are repeated when the charging voltage for charging the batterywith electric power is not less than a predetermined value, and continues supply of the electric power when the charging voltage is less than the predetermined value.

Power supply unit, generator, and wind turbine generator

Wind power generator

A constant-frequency electric power source including an A.C. generator having a field coil, to be driven by an engine and a converter unit which includes a rectifying circuit and an inverter. A controller controls the A.C. generator, and the A.C. generator has at least two groups of multi-phase output coils, one group of the at least two groups of multi-phase output coils being connected to the converter unit for providing an A.C. electric power with a constant-voltage and a constant frequency to be supplied to a first load, and the remaining groups of the at least two pairs of multi-phase output coils being connected to other loads respectively. The output of the remaining groups is supplied to the A.C. generator controller thereby controlling the input of the field coil of the A.C. generator. The A.C. electric power used for the first load is different from the A.C. electric power used for the other loads.

Constant-frequency electric power source

An AC exciter and a main AC generator are mounted on a common rotating shaft of an engine, and a power rectifier and a power inverter are connected in series to the output of the main AC generator. In starter mode, an external AC power source is connected by a switch to the input of the power rectifier, and the output of the power inverter is applied to an armature winding of the main AC generator to drive it as a nocommutator motor to start the engine. A permanent magnet AC generator is also mounted on the common shaft of the engine to provide DC excitation to the AC exciter after converting the output of the permanent magnet AC generator into DC current, and the output of the permanent magnet AC generator is further utilized to detect the rotational speed of the engine to control the switch.

Engine start type VSCF generating system

An A.C. relay system for making and breaking an A.C. power line utilizing an electromagnetic relay having a coil for opening and closing the mechanical switching contacts, a bilateral gated semiconductor such as a triac connected across the contacts, and a control circuit for switching the relay and triac in proper sequence is disclosed. The control circuit comprises a sequence control unit, a phase detector, a triac firing unit and a relay energizing unit. Upon actuation of the sequence control unit, the triac firing unit first fires the triac and then the relay energizing unit energizes the coil to close the mechanical contacts. To break the A.C. power line, the sequence control unit first de-energizes the relay energizing unit and then after a suitable time interval de-energizes the triac firing unit to cut off the gate signal, the triac being turned off when the load current on the power line is below a triac holding current.

A.C. Relay system

Growing community of inventors

Ise, Japan

Kazuo Okubo