Search results for: Toshihiko Tanaka
article
The Journal of Dermatology > 49 > 12 > 1255 - 1262
The prevalence of urticaria has been reported mostly in Europe and North America. However, precise information regarding its subtypes and clinical characteristics in primary care practice, especially in Asian countries, are scant. Patients with urticaria and/or angioedema who visited nine primary clinics of accredited dermatologists and allergologists in Japan were recruited from October to November...
article
Advanced Functional Materials > 28 > 19 > n/a - n/a
Simultaneous edge‐on to face‐on reorientation and one‐dimensional alignment of small p‐conjugated molecules is achieved in solution‐processed polycrystalline organic thin films using mechanical rubbing at room temperature. As Jean‐Charles Ribierre, Toshihiko Tanaka, Chihaya Adachi, Tetsuya Aoyama, and co‐workers report in article number 1707038, such a control of the molecular orientation should have...
article
Advanced Functional Materials > 28 > 19 > n/a - n/a
In this study, room‐temperature mechanical rubbing is used to control the 3D orientation of small π‐conjugated molecular systems in solution‐processed polycrystalline thin films without using any alignment substrate. High absorption dichroic ratio and significant anisotropy in charge carrier mobilities (up to 130) measured in transistor configuration are obtained in rubbed organic films based on the...
chapter
This paper discusses the harmonics compensation of the constant dc-capacitor voltage-control (CDCVC)-based strategy of smart charger (SC) for electric vehicles (EVs) in single-phase three-wire distribution feeders (SPTWDFs) under the distorted source voltage and load currents conditions. The basic principle of the CDCVC-based harmonics compensation strategy under the distorted source voltage and load...
chapter
This paper presents a detection method of small-foreign-metal particles using a 400 kHz silicon-carbide (SiC)-metal-oxide-semiconductor field-effect-transistors (MOSFETs) high-frequency inverter. A 400 kHz SiC-MOSFETs high-frequency inverter is developed and applied to small-foreign-metal particles detection on high-performance chemical films (HPCFs). A new placement of induction heating (IH) coils,...
chapter
This paper discusses reduction of capacitances of dc capacitors in the previously proposed smart charger (SC) with a sinusoidal charging-discharging lithium-ion battery for electric vehicles in single-phase three-wire distribution feeders. The dc-capacitor current of the three-leg pulse-width modulated (PWM) rectifier, which is included in the SC, is detected, and then added to the reference value...
article
Allergology International > 2017 > 66 > 3 > 458-462
The prognosis of spontaneous urticaria in association with early treatment remains unclear. In this study, we retrospectively studied the prognosis of acute spontaneous urticaria in relation to age and treatments in a local clinic of dermatology.Out of 5000 patients who visited an office dermatology clinic, clinical records of patients with spontaneous urticaria were extracted. Their prognosis and...
chapter
This paper proposes LED current control method of dimmable LED driver with dual active bridge (DAB) DC-DC converter for 1kW-class LED floodlight. The LED current control method is discussed in detail. The conventional LED driver cannot control turn-off time of LED current because the power flows from source side to LED floodlight side only. DAB converter is a bidirectional DC-DC converter formed by...
chapter
This paper addresses compensation performance of the constant dc-capacitor voltage-control (CDCVC)-based strategy for smart charger with the previously proposed reactive power control algorithm in single-phase three-wire distribution feeders (SPTWDFs) under distorted source voltage conditions. The instantaneous power flows into the smart charger is discussed in detail. This instantaneous power flowing...
chapter
This paper presents a detection method of small-foreign-metal particles using a 400 kHz SiC-MOSFETs high-frequency inverter. A 400 kHz SiC-MOSFETs high-frequency inverter is developed and applied to the small-foreign-metal particles detection on high-performance chemical films (HPCFs). HPCFs are manufactured with continuous production lines in industries. A new arrangement of IH coils are proposed,...
chapter
This paper proposes an inrush current suppressor for a squirrel-cage induction machine (SCIM) with phase-leading capacitors using a matrix converter (MC) in a large-capacity wind power generation system (WPGS). The reference output voltage of the MC is determined by multiplying the SCIM current with the variable control gain. Thus, the MC performs as resistors for the inrush current of an SCIM with...
chapter
This paper proposes a new cooperative-control strategy for a 400-W class light-emitting diode (LED) driver consisting of two DC/DC converters operating in the discontinuous current mode (DCM). In the cooperative control method, one DC/DC converter is selected to supply the output current for the LED, based on the reference value of the LED current. Thus, the proposed cooperative-control strategy achieves...
chapter
This paper presents the detection of small-foreign-metal particles using a 400 kHz SiC-MOSFETs high-frequency inverter. A 400 kHz SiC-MOSFETs high-frequency inverter is constructed and tested, and then applied to the small-foreign-metal particles detection on high-performance chemical films (HPCFs) with induction heating (IH). Experimental results demonstrate that the developed 400 kHz SiC-MOSFETs...
chapter
This paper presents an improvement in the harmonics compensation performance of a previously proposed smart charger (SC) with a constant dc-capacitor voltage-control (CDCVC)-based strategy for electric vehicles (EVs) in single-phase three-wire distribution feeders (SPTWDFs). A current controller of a three-leg pulse-width modulated rectifier with proportional-integral (PI) controllers in d-q coordinates...
chapter
This paper proposes a novel and simple harmonics compensation strategy that can control the fundamental reactive current in the previously proposed smart charger (SC) for electric vehicles (EVs) in single-phase three-wire distribution feeders (SPTWDFs). The proposed harmonics compensation strategy uses only constant dc-capacitor voltage control (CDCVC), which is typically used in grid-connected pulse-width...
article
IEEE Journal of Emerging and Selected Topics in Power Electronics > 2016 > 4 > 2 > 481 - 488
This paper proposes a novel reactive power control strategy to reduce the capacity of the previously proposed smart charger for electric vehicles (EVs) on single-phase three-wire distribution feeders. The proposed reactive power control strategy is based on the constant dc-capacitor voltage control of the grid-connected pulsewidth-modulated rectifier. Any calculation blocks of the load-side active...
chapter
Optimizing inter-processor(PE) communication is crucial for parallelizing compilers for message-passing parallel machines to achieve high performance. In this paper, we propose a technique to eliminate redundant inter-PE messages. This technique utilizes a data-flow analysis to find a definition point that corresponds to a use point where the definition and the use are occurred in different PEs. If...
article
IEEE Journal of Emerging and Selected Topics in Power Electronics > 2016 > 4 > 3 > 926 - 934
Wide bandgap semiconductors such as silicon carbide and gallium nitride (GaN) are promising materials for next-generation power devices. A normally ON GaN-based high-electron-mobility transistor (GaN HEMT) is fabricated for power electronic converters. However, the power consumption in the previously proposed gate drive circuit increases when the GaN HEMT is used for higher frequency operations; a...
chapter
This paper addresses the compensation performance of the previously proposed reactive power control algorithm with the constant dc-capacitor voltage control for active load balancer (ALB) on three-phase four-wire distribution feeders under distorted source voltage conditions. The instantaneous power flows into the ALB is discussed in detail. This instantaneous power flows into the ALB show that the...
chapter
This paper address compensation performance for the previously proposed smart charger of Electric Vehicles (EVs) with constant dc-capacitor voltage control under multiple household customers. No calculation blocks of the reactive and unbalanced active components on the load side are used in the previously proposed control strategy. The smart charger with the constant dc-capacitor voltage control based...
