著者

岩路 善尚 奥山 俊昭 金子 大吾 岡松 茂俊

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌D(産業応用部門誌) (ISSN:09136339)

巻号頁・発行日

vol.121, no.4, pp.476-483, 2001-04-01 (Released:2008-12-19)

参考文献数

14

被引用文献数

1 3

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High voltage adjustable speed drive systems offer significant advantages in many applications such as a fan, pump, or blower. In these applications, the adjustable speed drive systems achieves a higher level of system efficiency.Usually, low voltage inverters with output transformer were used for a high voltage induction motor drive system. Recently, direct drive inverter system without output transformer has proposed and investigated. This inverter system is composed of single phase unit inverters and outputs multilevel voltages.In this paper, pulse width modulation (PWM) technique suitable for high voltage direct drive inverter systems are discussed. At first, conventional multi-level PWM techniques based on the sub-harmonic method are shown and evaluated using time domain simulation. Next, new PWM method is proposed. This method has advantages that a modulation principle is very simple, distortion of the output voltage is very low, and well balanced switching losses among the unit inverters are achieved. Finally, simulation and experimental result are shown to illustrate the effectiveness of this method.

著者

戸張 和明 坂本 潔 岩路 善尚 金子 大吾 上松 初 大久保 智文

出版者

The Institute of Electrical Engineers of Japan

雑誌

電気学会論文誌. D, 産業応用部門誌 = The transactions of the Institute of Electrical Engineers of Japan. D, A publication of Industry Applications Society (ISSN:09136339)

巻号頁・発行日

vol.130, no.5, pp.614-624, 2010-05-01

参考文献数

8

被引用文献数

2 1

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We propose a new beatless control mechanism for permanent-magnet synchronous motor (PMSM) drives. In drive systems, the three-phase voltage source induces a ripple component whose frequency is six times that of the voltage source frequency in the DC voltage. Therefore, if the motor frequency becomes six times the voltage frequency, a beat phenomenon, which causes an increase in the motor current ripple is observed. We analyze the beat phenomenon which causes current ripples and propose a method based on periodic disturbance current regulation, i.e., beatless control. We carry out time-domain simulation and various experiments and demonstrate the effectiveness of the proposed controller.