DOCSLIB.ORG

Inverters Control the Motor Inverters Inverter Technology Made Its Mark on the History of Air Conditioners by Ushering in a New Era of Comfort and Energy Saving

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Inverters Control the Motor Inverters Inverter Technology Made Its Mark on the History of Air Conditioners by Ushering in a New Era of Comfort and Energy Saving Key Technology ❶ Inverters Control the Motor Inverters Inverter technology made its mark on the history of air conditioners by ushering in a new era of comfort and energy saving Daikin has always striven to be the air conditioning industry’s leader in technological advancement. Just how does Daikin By switching the direction of the electric current create technology second to none? This first in a series of to the electromagnet, the N and S poles can be feature articles on core technologies spotlights the inverter, switched to generate the attractive force and repulsive force naturally existing between two which has become synonymous with the name Daikin. magnets. Inverters can control motors by using these two forces alternately at the right timing. The inverter is like a motor driver which controls the air conditioner compressor’s motor A reluctance DC motor has a rotating internal spindle. An air conditioner is made The spindle is embedded up of an indoor unit and an with a strong neodymium outdoor unit. The inverter magnet to make it a high- is located in the outdoor power magnet. To rotate unit. It controls the motor the motor, the N and S of the compressor, which poles of the electromag- is really the heart of the net are switched at high machine. speed. The inverter is what controls this process. Before diving into inverter tech- reaches a set temperature. The motor nology, let’s review the basics of air restarts when the room tempera- conditioning design and electricity. ture falls below the set temperature, Air conditioners have an outdoor and repeats this cycle. This type of current back to alternating current of electronics technologies as a and comfort. Toshiba’s first inverter unit and an indoor unit, with a heat operation causes large fluctuations in was called a inverter, but in Japan, critical issue and begun inverter air conditioner, for example, boasted pump to transfer heat between these temperature and wastes energy. the device to control the entire pro- research without leading to com- minimal temperature fluctuations by units. With these main parts, an air The goal is to maintain a constant cess is commonly referred to as an mercialization. Daikin released its eliminating unevenness. While this conditioner provides both heating and room temperature and save energy inverter. Simply put, the inverter is first inverter air conditioner model in offered a higher level of comfort, it cooling. The heart of the machine is at the same time. To do this, the the motor driver which controls the 1984. Toshiba, meanwhile, launched did not prioritize energy saving. the compressor, located in the outdoor revolution speed can be lowered to a motor by adjusting the frequency and the first inverter-type residential If the inverter was to be the driver unit. Refrigerants in the compres- level needed to maintain room tem- other aspects of operation. air conditioner three years earlier. for the motor, then a high perfor- sor are used to transfer heat. They peratures instead of switching the Here is the history of the devel- Daikin’s inverter, however, was mance inverter would need to be attain a state of high temperature motor OFF when a set temperature is opment of the reluctance DC tech- made by an external company. The coupled with a high performance and pressure when compressed. In reached. For this type of operation, nology* and its DC inverter which birth of Daikin’s own reluctance DC motor. At the time, however, Daikin cold climates, cold refrigerants are the air conditioning system needs propelled Daikin to the fore of the air technology would have to wait until didn’t have a single engineer capable compressed by the compressor to a to variably adjust motor frequency, conditioning industry, as well as some Kazunobu Ohyama (currently TIC of developing a motor from scratch. high temperature and pressure, then which is synchronized with the revo- insight into the DNA behind “Daikin, Executive Engineer), who had been Ohyama rooted out applicable sent to the indoor unit to provide lution speed. The Technology Company.” pursuing research into the technology, research papers from journals around warm air. When raising room tem- One of the immediate problems, Eyeing the IPM motor joined the company. the world and took part in academic conferences to gain insights into peratures quickly, the compressor’s however, is that power supply at despite a lack of motor In 1989, Daikin had just wound revolution speed is increased, which factories and households is alternating down its Ideal Inverter Air condi- development options. Kazunobu Ohyama engineers raises the refrigerant temperature Executive Engineer, current, which has a fixed voltage and tioner (IIA) project and was ready to Ohyama’s search came to fruition faster and sends heat to the indoor Technology and Innovation Center frequency. This makes it necessary to The history of Daikin’s full-scale start technology development for the with the IPM motor. The IPM motor Motor Inverter Technology and Utilization unit. The motor driving the compres- Senior Associate Officer change the current to direct current, development of inverter air condi- next-generation of air conditioners. had a unique structure in which the sor accounts for 90% of an air condi- Born in Kagawa Prefecture in 1956, he later graduated and then change it back to alternat- tioners dates back to 1980 with the Ohyama joined the company in 1986 rotating rotors, made of electromag- tioner’s total energy consumption. from Tokyo Institute of Technology Master’s Program ing current. That’s the basic concept establishment of the Electronics as a researcher at the Electronics netic steel plate, were embedded with in 1981. He joined Daikin in 1986 after working as Conventional air conditioners turn an assistant at Nagoya Institute of Technology’s behind the inverter. The technology Engineering Center at the Shiga Plant Engineering Lab. After fully research- magnets. In conventional motors, the motor ON or OFF. When turned Department of Electrical and Electronic Engineering. In to change alternating current to direct (formerly the Electronics Engineering ing consumer needs, he determined the magnets cover the surface of the 2004, he was promoted to Associate Officer of Daikin on, the motor operates at 100% speed, Environment and Air Conditioning R&D Laboratory, Ltd. current was called a converter, and Lab). Even before that, the company that the next-generation air condi- rotors, meaning the motor can only then stops completely when the room and then assumed his current position in 2015. the technology to convert the direct had recognized the strengthening tioners needed both energy saving utilize the attractive force (magnetic *Reluctance DC technology: Technology associated with reluctance DC motors. Reluctance motors are unique in that the magnets embedded in the rotor endow them with a unique electromagnetic 20 Challenge 2016 Vol. 01 structure. With this structure, the motor can effectively utilize magnetic torque and reluctance torque (attractive force between the iron and magnet), thereby reducing electric usage by a significant degree. 21.
Load more

Recommended publications
  • Japanese Manufacturing Affiliates in Europe and Turkey
    06-ORD 70H-002AA 7 Japanese Manufacturing Affiliates in Europe and Turkey - 2005 Survey - September 2006 Japan External Trade Organization (JETRO) Preface The survey on “Japanese manufacturing affiliates in Europe and Turkey” has been conducted 22 times since the first survey in 1983*. The latest survey, carried out from January 2006 to February 2006 targeting 16 countries in Western Europe, 8 countries in Central and Eastern Europe, and Turkey, focused on business trends and future prospects in each country, procurement of materials, production, sales, and management problems, effects of EU environmental regulations, etc. The survey revealed that as of the end of 2005 there were a total of 1,008 Japanese manufacturing affiliates operating in the surveyed region --- 818 in Western Europe, 174 in Central and Eastern Europe, and 16 in Turkey. Of this total, 291 affiliates --- 284 in Western Europe, 6 in Central and Eastern Europe, and 1 in Turkey --- also operate R & D or design centers. Also, the number of Japanese affiliates who operate only R & D or design centers in the surveyed region (no manufacturing operations) totaled 129 affiliates --- 125 in Western Europe and 4 in Central and Eastern Europe. In this survey we put emphasis on the effects of EU environmental regulations on Japanese manufacturing affiliates. We would like to express our great appreciation to the affiliates concerned for their kind cooperation, which have enabled us over the years to constantly improve the survey and report on the results. We hope that the affiliates and those who are interested in business development in Europe and/or Turkey will find this report useful.
    [Show full text]
  • ESG in Japan: Misunderstood & Underestimated
    ESG in Japan: Misunderstood & Underestimated Comgest’s investment approach is grounded on thorough fundamental analysis carried out by experienced portfolio managers located in the markets where they invest. Seasoned investors who spend years researching and building relationships with local companies develop an understanding of cultural and regional nuances that are not obvious to outsiders. We believe this leads to perceptive investment insights that few other firms can match. This white paper, authored by Comgest PM Richard Kaye who has spent almost three decades living and investing in Japan, illustrates how experienced local investors can spot opportunities that others miss. Richard Kaye Analyst / Portfolio Manager, Japan Japan is in the process of being rediscovered after a “lost generation” in which it was largely neglected by both domestic Richard Kaye joined Comgest in 2009 and international asset allocators. However, despite the renewed and is a Tokyo-based Analyst and interest in this fascinating and broad market, international investors Portfolio Manager specialising in remain wary of corporate Japan’s ESG credentials. Japanese Japanese equities. With a wealth of companies have a reputation for being behind their global experience in Japanese equities, peers when it comes to ESG activities and transparency. We Richard became co-lead of Comgest’s believe that this characterisation is misleading: many Japanese Japan equity strategy upon joining the companies appear to be ahead of the rest of the world in terms of Group. He started his career in 1994 as environmental technologies and have a deep commitment to their an Analyst with the Industrial Bank of founding vision and social purpose.
    [Show full text]
  • Whither the Keiretsu, Japan's Business Networks? How Were They Structured? What Did They Do? Why Are They Gone?
    IRLE IRLE WORKING PAPER #188-09 September 2009 Whither the Keiretsu, Japan's Business Networks? How Were They Structured? What Did They Do? Why Are They Gone? James R. Lincoln, Masahiro Shimotani Cite as: James R. Lincoln, Masahiro Shimotani. (2009). “Whither the Keiretsu, Japan's Business Networks? How Were They Structured? What Did They Do? Why Are They Gone?” IRLE Working Paper No. 188-09. http://irle.berkeley.edu/workingpapers/188-09.pdf irle.berkeley.edu/workingpapers Institute for Research on Labor and Employment Institute for Research on Labor and Employment Working Paper Series (University of California, Berkeley) Year Paper iirwps-- Whither the Keiretsu, Japan’s Business Networks? How Were They Structured? What Did They Do? Why Are They Gone? James R. Lincoln Masahiro Shimotani University of California, Berkeley Fukui Prefectural University This paper is posted at the eScholarship Repository, University of California. http://repositories.cdlib.org/iir/iirwps/iirwps-188-09 Copyright c 2009 by the authors. WHITHER THE KEIRETSU, JAPAN’S BUSINESS NETWORKS? How were they structured? What did they do? Why are they gone? James R. Lincoln Walter A. Haas School of Business University of California, Berkeley Berkeley, CA 94720 USA ([email protected]) Masahiro Shimotani Faculty of Economics Fukui Prefectural University Fukui City, Japan ([email protected]) 1 INTRODUCTION The title of this volume and the papers that fill it concern business “groups,” a term suggesting an identifiable collection of actors (here, firms) within a clear-cut boundary. The Japanese keiretsu have been described in similar terms, yet compared to business groups in other countries the postwar keiretsu warrant the “group” label least.
    [Show full text]
  • Facilitation of Information Transfer on Chemicals in Products
    Facilitation of Information Transfer on Chemicals in Products The Ministry of Economy, Trade and Industry (METI) developed ‘chemSHERPA’ [kémʃéərpə] as a new information transfer scheme for chemicals in products throughout their supply chains. METI hopes that the dissemination of chemSHERPA may contribute to reduce the workload of both providers and recipients of the information. From the beginning of the development of chemSHERPA, METI has been in communication with international bodies such as the IEC and the IPC, etc., with the aim of developing chemSHERPA into not only a Japanese standard but also an International standard. To make it a de-facto standard, METI has introduced this scheme to international organizations and governments of other countries for their active use. The Joint Article Management Promotion Consortium (JAMP) is a governing body for chemSHERPA from April 2016 and see a shift to chemSHERPA. We believe many companies are preparing towards implementing chemSHERPA. Based on the efforts mentioned above, the following companies and company groups have agreed with the dissemination of chemSHERPA, and METI will continue to work with JAMP and companies to spread the use of chemSHERPA to internal as well as external supply chains as needed.(Please contact us if any company or company group has interest in putting its name below.) It should be noted, the use of the provision of data entry support tools is free of charge in principle with the aim of promoting wider use of chemSHERPA. [Contact information] Chemical Management Policy Division Manufacturing Industries Bureau Ministry of Economy, Trade and Industry [email protected] 03-3501-0080 (direct) 03-3501-1511 (ex.
    [Show full text]
  • BMS Interface for Air-Conditioning Systems
    BMS Interface for Air-Conditioning Systems Installation and User Guide www.microtrol.co.uk BACnetTM is a registered trademark of ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.) Contents 1. Supplied Parts............................................................................................................................ 3 2. Important Information ............................................................................................................... 4 3. Product Overview ...................................................................................................................... 5 3.1 Differences between Black Pear 1 and Black Pear 2 ......................................................................... 6 4. Connection Details .................................................................................................................... 7 4.1 Power Supply ....................................................................................................................................... 7 4.2 HVAC Communications Network ........................................................................................................ 7 4.3 Serial Communication Port .................................................................................................................. 8 4.4 Digital Input / Output ............................................................................................................................ 8 4.5 USB .....................................................................................................................................................
    [Show full text]
  • Carving out Daikin's Future with AI And
    A Science Dream Created by People Vol.03 Technology and May.2018 Innova tion Center Special Feature Daikin Undergoes Transformation Carving out Daikin’s Future with AI and IoT Interview Yoichi Ochiai The digital nature society that is just around the corner. TIC seeks collaborative partners with whom to generate new value. How should the future For further inquiries, please contact: [email protected] look for technology? Date of publication: May 1, 2018 (Volume 03) Published by Technology and Innovation Center, Daikin Industries, Ltd. 1-1, Nishi-Hitotsuya, Settsu, Osaka 566-8585, Japan (within Yodogawa Plant) http://www.daikin.com/about/corporate/tic/index.html Phone. +81-6-6195-7051 (switchboard) Y Interview oichi Daikin Undergoes Transformation Contents……22 Group Leader and Senior Engineer Technology and Innovation Center IAQ Technology Defining the Researcher ③ Tomohiro Yabu Conventional air conditioners will become ……26 Vol. 03 systems that maintain temperature while 2018 stimulating the senses Key Technology ③ “Advancement” ……30 of analysis/evaluation technology ……33 O A Science Dream Created by People ……01 Introducing future of air conditioner Daikin thinks of Technology and Innovation Center Heating, Ventilating, Vol.03 Head of the Digital Nature Group, May.2018 A Science Dream Created by People University of Tsukuba Air-conditioning and Refrigerating Technologyion Centerand CarvingSpecial Article out Daikin’s Future with AI and IoT Innova t Daikin Undergoes Transformation Expo Report Special Feature Interview Carving out Recent External Presentations Daikin’s Future Yoichi Ochiai ……04 with AI and IoT Yoichi Ochiai Challenge Interview The digital nature society The digital nature society that is just around the corner.
    [Show full text]
  • Coolplug Coolinkhub HVAC Bridge Quick Installation Guide
    CoolPlug CooLinkHub HVAC Bridge Quick Installation Guide Warning Read and understand the following Safety Guidelines and Warnings to ensure a safe installation Failure to follow WARNING may result in injury or death. This equipment is to be installed by accredited Install the equipment only in a restricted access electrician or similar technical personnel, as per location. these installation instructions. When wall mounting, be sure to fix firmly on a stable Read the installation instructions before connecting surface and in accordance to the instructions below. the system to the power source. When DIN rail mount fix the devices properly to All electrical work must be performed by a licensed the DIN rail following the instructions below. technician, according to local regulations. When mounting on DIN rail inside a metallic cabinet Ultimate disposal of this product should be handled be sure to properly connected to earth. according to all national laws and regulations. Unplug power when connecting the wires. Installation of the equipment must comply with local Pay attention to the polarity of power and and national electrical legislation for installation of communication cables when connecting them electric equipment. Disconnect power of any bus or communication Do not install the devices outdoors or exposed to cable before connecting the system direct solar radiation, water, high relative humidity or dust. 3 Caution Failure to follow CAUTION may result in serious injury, DO NOT INSTALL COOLINKHUB or COOLPLUG property damage or in some circumstances, even IN THE FOLLOWING LOCATIONS: death. a) Where mineral oil mist or oil spray or vapor is Do not allow children to play with the CoolPlug or produced, for example, in a kitchen.
    [Show full text]
  • R&Co Risk-Based International Index – Weighting
    Rothschild & Co Risk-Based International Index Indicative Index Weight Data as of June 30, 2021 on close Constituent Exchange Country Index Weight(%) Jardine Matheson Holdings Ltd Singapore 1.46 LEG Immobilien SE Germany 0.98 Ajinomoto Co Inc Japan 0.95 SoftBank Corp Japan 0.89 Shimano Inc Japan 0.85 FUJIFILM Holdings Corp Japan 0.73 Singapore Exchange Ltd Singapore 0.72 Japan Tobacco Inc Japan 0.72 Cellnex Telecom SA Spain 0.69 Nintendo Co Ltd Japan 0.69 Carrefour SA France 0.67 Nexon Co Ltd Japan 0.66 Deutsche Wohnen SE Germany 0.65 Bank of China Ltd Hong Kong 0.64 REN - Redes Energeticas Nacion Portugal 0.63 Pan Pacific International Hold Japan 0.63 Japan Post Holdings Co Ltd Japan 0.62 Nippon Telegraph & Telephone C Japan 0.61 Roche Holding AG Switzerland 0.61 Nestle SA Switzerland 0.61 Novo Nordisk A/S Denmark 0.59 ENEOS Holdings Inc Japan 0.59 Nomura Research Institute Ltd Japan 0.59 Koninklijke Ahold Delhaize NV Netherlands 0.59 Jeronimo Martins SGPS SA Portugal 0.58 HelloFresh SE Germany 0.58 Toshiba Corp Japan 0.58 Hoya Corp Japan 0.58 Siemens Healthineers AG Germany 0.58 MS&AD Insurance Group Holdings Japan 0.57 Coloplast A/S Denmark 0.57 Kerry Group PLC Ireland 0.57 Scout24 AG Germany 0.57 SG Holdings Co Ltd Japan 0.56 Symrise AG Germany 0.56 Nitori Holdings Co Ltd Japan 0.56 Beiersdorf AG Germany 0.55 Mitsubishi Corp Japan 0.55 KDDI Corp Japan 0.55 Sysmex Corp Japan 0.55 Chr Hansen Holding A/S Denmark 0.55 Ping An Insurance Group Co of Hong Kong 0.55 Eisai Co Ltd Japan 0.54 Chocoladefabriken Lindt & Spru Switzerland 0.54 Givaudan
    [Show full text]
  • Sustainability Report 2018 Fiscal Year Ended March 31, 2018
    Sustainability Report 2018 Fiscal Year Ended March 31, 2018 The Air You Live in The Air You Live in Air is something that surrounds us 24 hours a day. In fact, our existence, as well as the Earth’s, depends on it. At Daikin, the future of the world’s air is our greatest concern. We use the knowledge, innovation and technologies, dedicated to air, cultivated over many years, to improve the quality of air we breathe and the quality of lives we live. This is our mission. CONTENTS Our Message / Contents 1 CSR and Management Strategy Daikin Business Overview 3 Message from the President 5 Daikin’s Sustainability 7 Environmental Vision 2050 9 Value Chain and Daikin’s CSR 11 CSR Action Plan 2020 13 CSR for Value Provision Environment 15 New Value Creation 17 Customer Satisfaction 19 Human Resources 21 Community Topics 23 Data 25 Honors for Daikin 28 Third-Party Verification Statement 29 About This Report 30 1 Daikin Group Sustainability Report 2018 Daikin Group Sustainability Report 2018 2 CSR and Management Strategy Daikin Business Overview Bringing the World Healthy, Comfortable Lifestyles Daikin is a global manufacturer with overseas sales accounting for more than 70% of the group total and overseas employees accounting for 80% of the group workforce. In our businesses of air conditioning and fluorochemicals, we respond to the needs that arise from the diverse cultures and values of the world’s countries and regions by providing products that make people and space healthier and more comfortable. Our Business: Providing Healthy, Comfortable
    [Show full text]
  • The Next Five Years of Changes Will Be More Intense Than the Last Five
    Symposium Monozukuri (manufacturing) for kotozukuri (value creation), Daikin Industries, and TIC in how people live their lives. but our strengths lie in mechanisms particular, must put forward what E: That’s right. It’s like, start with it’s going to do. You must clearly urban design. Then, in the end, Carving out Daikin’s Future state your raisons d’être. Now you drill down to air conditioners. sell air conditioners. But, what are A: Consider the positioning of air Minoru Etoh you really selling? What value will conditioners in relation to the Professor at the Open and with AI and IoT you offer? For instance, Silicon whole frame. Otherwise, you end Transdisciplinary Research Initiatives (OTRI), Osaka University Valley’s discipline and code of up with something like a The angle of change will rapidly get steeper and steeper. Changes in AI After working at Panasonic (formerly conduct is, “The world is made of suboptimal approach, right? Matsushita Electric Industrial), the are particularly intense. What exactly is the essence of IoT? What are the software.” They share a common E: If Daikin gets stuck on the Advanced Telecommunications Research goals of TIC? The debate heats up around Professor Etoh. awareness of viewing things from idea, “But we’re an air con Institute International (ATR), and NTT DOCOMO’s Silicon Valley Office, Etoh a software-centric perspective. manufacturer,” then the company became a Senior Vice President at NTT This means they aim to create “a won’t grow, will it? DOCOMO, in charge of NTT DOCOMO system of systems,” that is, rather T: The only thing is though, Ventures and new business.
    [Show full text]
  • DAIKIN AR11E.Indd
    Annual Report 2011 DAIKIN INDUSTRIES, LTD. Annual Report 2011 Fiscal Year Ended March 31, 2011 Environmental Management and Electric Power Conservation Needs On March 11, 2011, eastern Japan was hit by a magnitude nine earthquake that has come to be referred to as the Great East Japan Earthquake disaster. The aftermath of the disaster has led to concerns regarding electric power shortages during peak summertime demand periods, and the Japanese government has, therefore, set the target of achieving a 15% across-the-board reduction in the amount of power consumed by companies and households in the regions served by Tokyo Electric Power Company and Tohoku Electric Power Company. Companies and households in western Japan have also been requested to cooperate with electric power conservation programs. These targets for reducing total electric power consumption along with other targets, such as those for reducing peak daytime power consumption levels, have made the optimization of energy consumption a major issue within Japanese society. As a comprehensive maker of air conditioners, which account for a substantial share of electric power consumption, the Daikin Group believes that it should take responsibility for the important mission of helping Japanese society realize the requisite sharp cuts in total electric power consumption and lowering of peak power consumption levels. The Group has been proactively carrying out that mission by proposing solutions for diminishing the power consumption of commercial air-conditioning systems and by providing information that facilitates efforts to lower the power consumption of household air-conditioning systems. In various ways, the Great East Japan Earthquake disaster has had a major impact throughout the world, and it is anticipated that the trend toward increasing consciousness of the importance of energy control methods will persist.
    [Show full text]
  • Nov 30, 2011 Waseda University Ad-Sol Nissin Corp. OMRON Corporation Sumitomo Electric Industries, Ltd. Daikin Industries, Ltd D
    Nov 30, 2011 Waseda University Ad-Sol Nissin Corp. OMRON Corporation Sumitomo Electric Industries, Ltd. Daikin Industries, Ltd dSPACE Japan K.K. Toko Electric Corporation Texas Instruments Japan Limited Hosiden Corporation Waseda Institute Creates Demand Response Technology Research Program Together with Nine Companies Research Organization Created at Waseda University's Research Institute for Advanced Network Technology to Study US Demand Response System and Electric Energy Control Standards (Open ADR, SEP) The Research Institute for Advanced Network Technology (RIANT) at Waseda University has formed the Demand Response Technology Research Program, together with nine companies – Ad-Sol Nissin Corporation, Omron Corporation, Sumitomo Electric Industries, Daikin Industries, dSPACE Japan, Toko Electric, Oracle Japan, Texas Instruments Japan and Hosiden Corporation. Following large-scale electric power outages in California, the United States is taking the global lead in developing smart grid technology on a nationwide basis, including demand response component technology for a national grid, and standardizing electric energy control. The US initiative will examine such issues as controlling the balance of electric power supply and demand, making improvements to the power grid and creating new electric power-related markets. Industry, academic, and government officials in countries around the world are actively studying smart grid standardized technology in the US. It will be important in Japan to have a neutral scientific research organization that evaluates and studies technology standardization in foreign countries. Japanese companies specialize in energy equipment control technology and related peripheral devices. This expertise, in close integration with overseas smart grid standardized platforms, allows development of higher value system solutions that can be provided to global users and corporations.
    [Show full text]