发明名称 CONTROL CIRCUIT FOR INVERTER
摘要 PURPOSE:To improve the utility efficiency of an ROM by writing a high output voltage pattern in the region of the ROM for the low output voltage which is not originally used. CONSTITUTION:In a digital frequency and voltage control type inverter control system, a variable frequency is obtained by a rate multiplier 102 and a variable output voltage is obtained by an ROM103. When the number of output frequency steps is less than 1/2 of the totally counted number of frequency control input bit number, only the lower significant bit is inputted as the voltage selection address of the ROM103 except the most significant bit of the frequency control input, and the voltage which corresponds to the output frequency when the most significant bit is selected in the voltage pattern area corresponding to less than the lowest output frequency to normally become vacant area.
申请公布号 JPS5872379(A) 申请公布日期 1983.04.30
申请号 JP19810171093 申请日期 1981.10.26
申请人 TOKYO SHIBAURA DENKI KK 发明人 UESUGI NAOYOSHI
分类号 H02M1/084;H02M7/48 主分类号 H02M1/084
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