| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an inverter control device with high reliability that avoids continuous operation in a resonant frequency band, and prevents damage of pipe, or the like. <P>SOLUTION: The inverter control device includes an operation prohibition frequency setting unit that predetermines an operation prohibition region including the resonant frequency band of a compressor. The device promptly sets the value of rotation below a lower limit of the operation prohibition region as a target value of the rotation, and performs resonance avoiding operation to avoid continuous drive in the drive prohibition region, when a duty cycle reaches an upper limit and an actual value of rotation is equal to the operation prohibition region. <P>COPYRIGHT: (C)2011,JPO&INPIT |
