| 摘要 |
A method of operating a motor is disclosed. The motor has a nameplate operating frequency and at least a first and second wiring configuration for operating at a first nameplate voltage and second, higher, nameplate voltage, respectively. The method includes operating the motor in the first configuration at a frequency and a voltage based on a set of frequency versus voltage ratios over a range of frequencies. A first ratio in a lower portion of the frequency range is lower than a second ratio in a middle portion of the frequency range. A third ratio in an upper portion of the frequency range is lower than the second ratio. The range of frequencies extends from a value below the nameplate frequency to a value above the nameplate frequency. The corresponding range of voltages extends from a value below the first nameplate voltage to a value above the first nameplate voltage. |
