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Increasing the Amount of Resources Saved

In FY2019, the total amount of resources used in Toshiba Group's major products, estimated by multiplying the amount used for products and packaging materials by the number of shipments, was approximately 310,000 tons. Based on comparisons with previous product models and adjusting for the expected number of years of use, we also estimated to what extent resource consumption has been reduced for different products. Our comparisons show that we have reduced the use of resources by 100,000 tons compared to previous product models and by 300,000 tons in total from FY2017 and achieved the planned amount of 270,000 tons. We aim to reduce resource consumption by a cumulative total of 380,000 tons in FY2020 and promote design for reduced resource consumption in all kinds of products toward increasing the amount of resources saved.

Amount of resources saved (cumulative total)

[Image] Amount of resources saved (cumulative total)
Amount of resources saved by business segment (FY2019 (cumulative total))
[Image] Amount of resources saved by business segment (FY2019 (cumulative total))
Calculated by comparison with the previous product models adjusting for the expected number of years of use

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Case: Industrial inverter (VF-AS3J)

Toshiba Industrial Products and Systems Corporation


[Image] Industrial inverter (VF-AS3J)

An inverter is a device that, in addition to contributing to energy saving and CO2 emissions reduction by controlling the motor speed, which enables the machine to operate efficiently, also contributes to resource saving by minimizing the current upon startup, which reduces the burden on the power supply and thus reduces the size of the power-receiving facility.
The new high performance inverter "VF-AS3J" that we started selling in 2019 reduces CO2 emissions during use by achieving a loss reduction of approximately 30% compared to our conventional model (VF-AS1). It is also an industry-leading* compact, lightweight model that compensates for the increased parts count due to the more advanced functionality in its main body with redesigned, highly integrated parts.
This product was certified as an Excellent ECP in FY2019.

Comparison of models with the same functionality (as of October 2019)

Case: Small diameter downlights; small diameter universal downlight

Toshiba Lighting & Technology Corporation


In recent years, demand for small diameter downlights and universal downlights has been increasing due to a boom in new condominium and hotel construction. Given this market environment, we have developed lighting equipment that supports construction that utilizes small-diameter lighting that has excellent workability for ceiling installation with a weight of 0.4 kg, an embedding hole diameter of 50 mm, and a height of 100 mm, featuring the industry’s highest level of resource- and space-saving performance. This product is designed to significantly reduce glare when looking at the lighting equipment directly, offering a shielding angle (the angle at which the light-emitting face is seen) of more than 40°.
In addition, it realizes a high color rendering light that is close to that of natural light by achieving stable lighting (smooth dimming from 0% to 100%) in the low lumen domain*1 as a result of installing our unique GaN*2 power supply.
This product provides stable lighting with smooth dimming in hotel rooms and cafes, where a relaxed atmosphere is staged, and also contributes to effective use of resources by ensuring resource and space savings.
This product was certified as an Excellent ECP in FY2019.

Small current domain
Gallium nitride

[Image] Small diameter universal downlight
Small diameter universal downlight

[Image] Realizing smooth dimming
Realizing smooth dimming

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Case in FY2018

Case : Elevator controller renovation: Time-saving renovation

Toshiba Elevator and Building Systems Corporation

We have made it possible for customers to continue to use elevators by replacing only the main devices (controller, motor, etc.) of their elevators which have exceeded their service life and for which the end of components supply* is close at hand. This service improves the convenience of customers in various respects such as: (1) being less expensive than conventional products; (2) short construction period with complete suspension for two days (previously, five to seven days); and (3) improved safety (use of double braking system). From an environmental aspect, by increasing the rate of reusing existing components to 88% and thus reducing the resources used, this service was certified as an excellent ECP for FY2018. Moreover, it achieves energy saving by using LED lighting and a state of the art controller.

For some elevators whose production has ended, the production of some of their components has also ended and therefore maintenance components may not be available.

[Image] Elevator controller renovation: Time-saving renovation

Case : Radio source visualizing system

Toshiba Infrastructure Systems & Solutions Corporation

As the use of radio waves for mobile phones increases, the effects from radio interference and disturbance due to illegal radio waves transmitted from unlicensed radio stations has recently become serious.
With the aim of identifying the locations of unlicensed radio stations, we have developed a radio source visualizing system that can identify the locations of radio emission sources (antennas, mobile objects) in two dimensions by superimposing an imaging processed electric field distribution and an image photographed with a camera.
By integrating the signal processing section and antenna section which were previously separate components, into one unit, the new system (TW4347B) that we have developed achieves resource saving of approximately 56%* by a weight comparison. The system is also designed to meet the needs of customers by expanding the frequency range and achieving approximately 70% of energy saving in a comparison of power consumption for long-hour operation.
Looking forward from here, we will propose a wide range of applications such as measurement of the radio wave (emission) environment and checking for mobile phone usage and thereby contributing to resolving various social issues.

Comparison with a conventional model (TW4347A)

[Image] Various antennas of the radio source visualizing system TW4347B (From left: 300–700 MHz, 700–2,700 MHz, 2,700–6,000 MHz)
Various antennas of the radio source visualizing system
TW4347B (From left: 300–700 MHz, 700–2,700 MHz, 2,700–6,000 MHz)

[Image] Image of practical use
Image of practical use

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Case in FY2017

Case : Magnet-less synchronous reluctance motor

Toshiba Industrial Products and Systems Corporation

As the global demand for energy increases, there are ever stronger demands to increase energy efficiency in industrial motors. The performance of high efficiency motors generally depends on the neodymium magnet, which is a magnetic material and a type of permanent magnet. Dysprosium which is the rare earth element (heavy rare earth element), to be added to the magnet, is unevenly distributed throughout our planet and present only in extremely small amounts so making efforts to reduce consumption is very important.

Toshiba Industrial Products and Systems Corporation therefore developed a magnet-less synchronous reluctance motor with excellent resource-saving capability that does not use any aluminum conductor or permanent magnet (which is a rare earth metal) since it instead utilizes a rotor composed of an iron core with a slit-like gap called a flux barrier*1. By also making the most of the reluctance torque*2 through an optimized flux barrier, the motor achieves high efficiency equivalent to IE5*3.

Currently, a prototype has been developed (as of September 2018).
A torque generated by a (magnetic) reluctance.
The highest level of efficiency defined in the motor energy efficiency guideline in Annex A of the international standard IEC60034-30-1.

[Image] Magnet-less synchronous reluctance motor (prototype)
Magnet-less synchronous reluctance motor (prototype)

[Image] Rotor construction
Rotor construction

Case : Paper reuse system Loops

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