A Proposal of a New Gradient Driver with a Gradational Voltage Inverter for Low Power Loss

This paper proposes a new gradient driver with a gradational voltage inverter for low power loss and downsized filter circuits. Gradient drivers produce direct current with low ripple amplitudes to achieve high image quality and high slew rates to obtain images rapidly. The proposed gradient driver...

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Bibliographic Details
Published inIEEJ JOURNAL OF INDUSTRY APPLICATIONS Vol. 141; no. 12; p. 942
Main Authors Oishi, Masayuki, Kobayashi, Ryosuke, Sakashita, Tomokazu, 将幸, 大石, 亮祐, 小林, 友一, 坂下
Format Journal Article
LanguageJapanese
Published Tokyo Japan Science and Technology Agency 01.01.2021
Subjects
Amplitudes
Control methods
Direct current
Electric potential
Electric power loss
Image quality
Inverters
MOSFETs
Ripples
Voltage
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Summary:This paper proposes a new gradient driver with a gradational voltage inverter for low power loss and downsized filter circuits. Gradient drivers produce direct current with low ripple amplitudes to achieve high image quality and high slew rates to obtain images rapidly. The proposed gradient driver is characterized by low ripple amplitude of the output current from the inverter composed of SiC-MOSFETs and high output voltage from another inverter composed of IGBTs. This paper discusses both the principle of operation and control method of the new gradient driver. Experimental verification is performed on a full-scale system. The results show the advantages of the proposed gradient driver based on loss analysis by calculations.
ISSN:2187-1094
2187-1108
DOI:10.1541/ieejias.141.942