发明名称 |
Inverter control circuit and interconnection inverter system having that inverter control circuit |
摘要 |
An inverter control circuit (6) controls the operation of a plurality of switching elements in a three-phase inverter circuit (2) by a PWM signal. A phase voltage output from the three-phase inverter circuit (2) is outputted through a low-pass filter (3). A waveform of the phase voltage output from the low-pass filter (3) assumes the following waveforms through the control of the PWM signal. The waveform becomes zero in a first one-third period of a cycle; forms a sine wave corresponding to a phase from 0 to 2n/3 in a second one-third period; and forms a sine wave corresponding to a phase from n/3 to n in a remaining one-third period of the cycle. Such PWM signal cyclically includes a period where a pulse is not generated. Therefore, the switching action of the switching element is periodically stopped. |
申请公布号 |
AU2009290165(A1) |
申请公布日期 |
2010.03.18 |
申请号 |
AU20090290165 |
申请日期 |
2009.07.13 |
申请人 |
DAIHEN CORPORATION |
发明人 |
HATTORI?NOBUYUKI;MOROTOMI?NORIYUKI;TSUKIYAMA?DAISUKE |
分类号 |
H02M7/48;H02M1/00;H02M7/5387 |
主分类号 |
H02M7/48 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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