暖通空调行业需要解决一些影响变速暖通空调系统潜力的因素。例如，变速暖通空调系统和测量仪器传统上被开发用于处理简单正弦波的电力输入电源。随着低成本固态功率器件和集成电路的发展，许多变速电机概念已经投入生产。其中许多，如电容滤波型逆变器，从谐波含量极高的线路中吸取电流。为了确定HVAC效率、设计和制定标准，准确测量该功率或能量非常重要。在开发更高效的暖通空调系统时，为了分离损耗，能够准确测量进入电机导线的功率以及输送到电子驱动器的交流功率，这一点也很重要。 主要研究者:哈米德·托利亚特，德克萨斯农工大学开展:1999年9月至2001年12月赞助:TC 8.11，电机和电机控制。

There are some factors that are hurting the potential of variable speed HVAC systems that need to be addressed by the HVAC industry. For example, variable speed HVAC systems and measurement instruments have been traditionally developed to handle electrical input power supplies that are simple sine waves. With the development of low cost solid state power devices and integrated circuits, many variable speed motor concepts have gone into production. Many of these, such as the capacitor filter type inverter, draw current from the line that have extremely high harmonic content. It is important to measure this power or energy accurately in order to determine HVAC efficiency, design and develop standards. It is also important for the purpose of separating losses in the development of more efficient HVAC systems to be able to measure accurately the power into the motor leads as well as the AC power delivered to the electronic drive.Principal Investigator: Hamid Toliyat, Texas A&M UniversityConducted: September 1999 - December 2001Sponsored by: TC 8.11, Electric Motors and Motor Control.