在实验室板热泵试验装置中，测量了室内离心式鼓风机和密封往复式压缩机（均配有感应电机）的运行效率。室内鼓风机使用20世纪80年代初生产的六步电压源逆变器（VSI）进行测试，并使用电机发电机（M-G）（理想感应电机驱动）进行测试，鼓风机电机驱动频率范围为20至60 Hz。通过VSI、脉冲宽度调制逆变器（PWMI）和M-G对往复式压缩机进行单独测试，以观察在15至90 Hz的驱动频率范围内，每个可调速驱动对压缩机效率的影响。 实验室数据表明，随着驱动频率从60 Hz降至15 Hz，热泵的性能系数（COP）和部件效率对感应电机的三相电压输入量变得越来越敏感。伏特/赫兹的线性关系产生了最好的压缩机效率和最佳COP；然而，对于室内鼓风机，每赫兹电压关系随转速变化，以获得最佳鼓风机和鼓风机电机效率组合。在60 Hz驱动频率下测得的VSI效率仅为85%，导致整个鼓风机和驱动系统（鼓风机电机和逆变器）的效率降低了M驱动的鼓风机效率的16o5%- G组。由于电流谐波对压缩机和压缩机电机的间接影响，在15 Hz转速下观察到压缩机的等熵效率比理想感应电机驱动下测得的等熵效率低约30%。单位:双引文:研讨会，ASHRAE交易，1988年，第94卷，pt。德克萨斯州达拉斯1号

The operating efficiencies of an indoor centrifugal blower and a hermetic reciprocating compressor, both having induction motors, were measured in a breadboard heat pump test facility. The indoor blower was tested using a six-step voltage source inverter (VSI) produced in the early 1980s and also using a motor-generator (M-G) (ideal induction motor drive) for blower motor drive frequencies ranging from 20 to 60 Hz. The reciprocating compressor was driven in separate tests by a VSI, a pulse-width modulated inverter (PWMI), and an M-G To observe the effect of each adjustable-speed drive on the efficiency of the compressor for drive frequencies ranging from 15 to 90 Hz.Laboratory data indicated that the coefficient of performance (COP) of the heat pump and component efficiencies became increasingly sensitive to the magnitude of three-phase voltage input to the induction motors as drive frequency decreased from 60 to 15 Hz. A linear relation of volts per hertz yielded best compressor efficiency and thus best COP; however, for the indoor blower, the volts per hertz relationship was varied with speed for the best combination blowerand- blower-motor efficiency.A VSI efficiency of only 85%, measured at 60-Hz drive frequency, caused the overall blower and drive system (blower motor and inverter) efficiency to drop 16o5% of efficiency measured with the blower driven by the M-G set. The isentropic efficiency of the compressor was observed at 15-Hz speed to be roughly 30% less than that measured with the ideal induction motor drive, due to the indirect effect of current harmonics on the compressor and compressor motor.Units: Dual