A method for calculating AC currents from sampled DC current data in a three-phase PWM inverter

被引：11

作者：

Fukumoto, Tetsuya ^{[1
,2
]}

Watanabe, Yukie ^{[1
,2
]}

Hamane, Hiroto ^{[1
,2
]}

Hayashi, Yoichi ^{[1
,2
]}

机构：

[1] Aoyama Gakuin University, Sagamihara 229-8558, 5-10-1, Fuchinobe

来源：

IEEJ Transactions on Industry Applications | 2007年 / 127卷 / 02期

关键词：

AC current sensor-less; Current ripple; One shunt method; PWM pattern generation; Space vector;

D O I：

10.1541/ieejias.127.181

中图分类号：

学科分类号：

摘要：

In order to reduce costs of inverters for home electrical appliances using the PMSM, the AC current sensor-less control is required as well as the position sensor-less control. This paper proposes a PWM technique suitable for calculating AC currents from sampled DC current data in the one-shunt system, which is one of the AC current sensor-less methods. The proposed PWM technique using a triangle carrier wave leads to the dc current sampling at near the top and bottom of the carrier wave, and AC current calculation within one cycle of the carrier under normal conditions. To reduce errors in the AC current calculation caused by the PWM current ripple, the current ripple waveforms are calculated from the instantaneous inverter output voltages and used for the compensation. The principles of the PWM technique and the AC current calculation are explained, as well as experimental results.

引用

页码：181 / 188

页数：7

共 7 条

[1]

Sakanobe K., Yabe M., Suzuki N., Front of Power - electronics technology in Refrigerators, Power electronics society 16ht seminar materials, pp. 38-45, (2001)

[2]

Murai Y., Tanizawa T., Yoshida M., Three Phase Current-WaveformDetection on PWM Inverters from DC Link Current Steps, IPEC-Yokohama(95), pp. 271-275, (1995)

[3]

Matsusihro H., Matsui K., Kawaji M., Ogawa M., Sinusoidal Wave-form Drive of PM Motor by Inverter Bus Current Sampling, Annual Conferenc of IEEJ, 4-126, (2002)

[4]

Shinapat Rhienprayoon, Reconstruction of Motor Phase Currents from Current Signals of Application Specific Intelligent Power Modules, IPEC-Niigata, (2005)

[5]

Kawabata Y., Endo T., Takakura Y., Study of Control for Position Snsorless and Motor Current Snsorless Permanent Magnet Synchronous Motor Drives, Industrial Application Conference of IEEJ, 171, (2002)

[6]

Fukumoto T., Watanabe Y., Hamane H., Hayashi Y., A PWM pattern generation method for calculating AC currents in one-shunt system, Industrial Application Conference of IEEJ, 1-53, (2005)

[7]

Watanabe Y., Fukumoto T., Hamane H., Hayashi Y., A Current Ripple Compensation for the AC Current Snsor-less Method Using One-Shunt Resister in the DC-Link, Industrial Application Conference of IEEJ, 1-54, (2005)

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