发明名称 |
A control apparatus for PWM-controlled, variable voltage/variable frequency inverters. |
摘要 |
<p>In a PWM-controlled, variable voltage/variable frequency inverter (INV), a pulse mode (N), which is identified by a number of voltage pulses within one cycle of an AC output voltage of the inverter (INV), is changed in accordance with a frequency of the AC output voltage and an AC output voltage factor ( beta ), which is a ratio of an AC output voltage to be produced by the inverter (INV) at that time to a maximum value of the AC output voltage which can be produced under a then-present value of a voltage of a DC voltage source (Ed) for the inverter (INV).</p> |
申请公布号 |
EP0293844(A2) |
申请公布日期 |
1988.12.07 |
申请号 |
EP19880108719 |
申请日期 |
1988.05.31 |
申请人 |
HITACHI, LTD. |
发明人 |
HORIE, AKIRA;JIMBO, YOSHIJI |
分类号 |
B60L9/18;H02M7/48;H02M7/529;H02P27/08 |
主分类号 |
B60L9/18 |
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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