发明名称 |
DC to AC power converting apparatus |
摘要 |
A neutral point clamped three-phase three-level inverter is connected to a first DC power supply and single-phase inverters are connected in series with AC output lines of individual phases of the three-phase three-level inverter such that sums of output voltages of the three-phase three-level inverter and output voltages of the respective single-phase inverters are output to a load through a smoothing filter. An output control unit controls the three-phase three-level inverter so that the individual phases of the three-phase three-level inverter output primary voltage pulses at a rate of one pulse per half cycle and controls the individual single-phase inverters by PWM, so that output voltages to the individual phases of the load form sine waves of which phases are offset by 2pi/3 from one phase to another, the sine waves having the same peak value. |
申请公布号 |
US8625307(B2) |
申请公布日期 |
2014.01.07 |
申请号 |
US200913127132 |
申请日期 |
2009.11.11 |
申请人 |
IWATA AKIHIKO;ITO HIROSHI;MITSUBISHI ELECTRIC CORPORATION |
发明人 |
IWATA AKIHIKO;ITO HIROSHI |
分类号 |
H02M1/12;H02M1/14 |
主分类号 |
H02M1/12 |
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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