发明名称 |
PULSE-WIDTH MODULATION TYPE INVERTER APPARATUS |
摘要 |
An improvement of control for prevention of a short circuit between controllable elements used as switching elements in a pulse-width modulation type inverter apparatus which outputs a variable amplitude or variable frequency a.c. voltage. The pulse-width modulation type inverter apparatus is of a type wherein, a selecting means selects an output from a processing means within a period during which the result of detection by a current detector falls within a region of substantially zero level and also selects only a signal corresponding to each switching element which effectively acts on the generation of the output current, out of signals generated by a PWM signal generating means during a period other than the above-described period, thereby to output the same as a drive signal for the switching element.
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申请公布号 |
US5072354(A) |
申请公布日期 |
1991.12.10 |
申请号 |
US19900519376 |
申请日期 |
1990.05.03 |
申请人 |
MITSUBISHI DENKI KABUSHIKI KAISHA |
发明人 |
KATTO, MASAYUKI;YAMASHITA, KOYO |
分类号 |
H02M1/00;H02M1/38;H02M7/538 |
主分类号 |
H02M1/00 |
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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