Panasonic Intellectual Property Management Co., Ltd.

Nihon Yamamura Glass Co., Ltd.

Satoshi Sugimoto

Yoshikatsu Ito

Mitsuo Ueda

Senichi Onoda

Yasuhiro Matsuda

Yousuke Ohtsuki

Hiroaki Yuasa

Melvin Lim Si

Kenichi Gomyo

The power conversion system includes an inverter circuit. The inverter circuit performs a grid-connected operation and an independent operation. When performing the independent operation, the inverter circuit may output, via a terminal, AC power converted to a load disconnected from a power grid. When the inverter circuit performs the independent operation, a control unit controls, when operating in a first mode, the power conversion system in a first time range such that an AC voltage is applied to the terminal, and controls, when operating in a second mode, the power conversion system in a second time range different from the first time range. The second mode includes control of stopping an operation of having the AC voltage applied to the terminal.

Control system, power system, control method, and program

A controller in an electricity storage system that includes a first DC/DC converter connected to a storage battery, and a bidirectional inverter connected to the first DC/DC converter. The controller includes a control circuit which changes a content to be displayed by a display, according to whether the electricity storage system is in a predetermined state in which a first PV is connected to the bidirectional inverter via a DC bus.

Controller, electricity storage system, and recording medium

The present invention provides a quality control method and a quality control apparatus for use in the formation of a glass product. A feeder mechanism cuts a column-like molten glass pushed out through an orifice thereof into a glass gob and allows each glass gob to fall with gravity from the orifice. A predetermined glass product is formed from the glass gob after delivering the fallen glass gob to a predetermined position. According to the present invention, the glass gob produced by the feeder mechanism is observed by a plurality of optical observing means spaced apart from each other during a falling process of the glass gob, and three-dimensional coordinates data of the entire surface of the glass gob is generated. Measurement data relating to at least one of a volume, a weight, a surface shape, a length, a thickness, an angle in a falling direction, and a cut surface shape of the glass gob is produced based on the three-dimensional coordinates data. The presence or absence of a defect in the quality of the glass gob is detected by comparing the measurement data with quality standard data of a normal glass gob. A causal relationship between at least one of the operational factors of the feeder mechanism and the quality defect is determined depending on the type of quality defect identified.

Quality control method and quality control apparatus for glass gob in the formation of a glass product

Growing community of inventors

Osaka, Japan

Satoshi Sugimoto