针对预测的压缩机和室内鼓风机负载曲线，比较了两种广泛的可调速控制的系统（电机加逆变器驱动）效率示例。这两种类型是逆变器驱动感应电机（IDIM）和永磁电子换向电机（PM ECM）。还给出了参考正弦波驱动感应电机（SWDIM）的效率。ASHRAE文献（Lloyd 1982）中关于70年代后期IDIM压缩机驱动器的可用台架数据与IDIM和PM-ECM驱动器上获得的最新台架和应用数据进行了比较。将驱动效率与加热和冷却条件下的一组常见预测工作扭矩要求进行比较。使用调节热泵模型来预测往复式压缩机的扭矩/驱动力- 频率映射和预期工作扭矩范围。分析了调节压缩机扭矩要求的变化，并检查了主要决定因素。还讨论了调整不同压缩机类型和尺寸策略的给定扭矩关系的方法。对于调节室内鼓风机驱动，也进行了类似的性能比较。Miller（1988）提供了80年代早期带有IDIM驱动（和SWDIM参考驱动）的调节式热泵的调节风机性能数据。这些数据与近期IDIM和PM-ECM驱动器在类似扭矩条件下的台架数据进行了比较。在压缩机和鼓风机应用中，PM的组合系统效率- ECM驱动器几乎等于或高于参考SWDIM案例，显著优于70年代后期可用的IDIM。与最近IDIM上的可用数据相比，PM-ECM相对于IDIM压缩机的效率优势在半速和标称转速（3600 rpm）之间降低了40%到50%，但仍然分别高出14%到9%。对于鼓风机来说，IDIM的改进并没有那么大。目前，PM ECM驱动的鼓风机在效率、成本和可靠性方面与IDIM鼓风机的竞争非常激烈。对于压缩机PM-ECM驱动器，如果在成本和可靠性问题上继续取得进展，且效率损失最小，这些驱动器将可能成为未来的首选驱动器- 发电（5至10年范围）调节热泵。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

Examples of system (motor plus inverter drive) efficiencies of two broad types of adjustable speed control are compared for predicted compressor and indoor blower load profiles. The two classifications are inverter-driven induction motors (IDIMs) and permanent-magnet electronically commutated motors (PM-ECMs). Reference sine-wave-driven induction motor (SWDIM) efficiencies are also given.Available bench data in the ASHRAE literature (Lloyd 1982) on late 70’s IDIM compressor drives are compared to recent bench and application data obtained on IDIM and PM-ECM drives. The drive efficiencies are compared over a common set of predicted operating torque requirements for heating and cooling conditions. A modulating heat pump model was used to develop predicted reciprocating compressor torque / drive-frequency mappings and the expected operating torque ranges. The variation in modulating compressor torque requirements is analyzed and the major determining factors examined. Ways to adjust the given torque relationships for different compressor types and sizing strategies are also discussed.Similar performance comparisons are made for modulating indoor blower drives. Modulating blower performance data on an early ’80s generation modulating heat pump with an IDIM drive (and SWDIM reference drive) were obtained from Miller (1988). These data are compared to bench data on recent IDIM and PM-ECM drives under similar torque conditions.In both compressor and blower applications, the combined system efficiency of the PM-ECM drives is shown to be nearly equal to or higher than that of the reference SWDIM cases and significantly better than IDIMs available in the late ’70s. When compared to available data on more recent IDIMs, the PM-ECM efficiency advantage over IDIM compressors has been reduced 40 to 50% between half and nominal speed (3600 rpm) but still remains 14 to 9% higher, respectively. For blowers, the IDIM improvement has not been as great.PM-ECM-driven blowers appear to be very competitive at present with IDIM blowers on the combined basis of efficiency, cost, and reliability. For the compressor PM-ECM drives, if progress continues on cost and reliability issues with minimal loss in efficiency, these drives will likely be a leading candidate for future-generation (5 to 10 year range) modulating heat pumps.Units: Dual