Integrated Implementation of Multiple AC Motor Control and Two Phase Interleaved Power Factor Correction System Using Single Low Cost Microcontroller for HVAC Applications

摘要

The cost sensitive drives like heating ventilating and air conditioning (HVAC) appliances havernbeen utilizing variable speed drives to maximize the efficiency and comfort for the user. Most ofrnthese applications employ more than one motor, e.g. ventilation and compression. On the otherrnhand, with various regulations limiting the input current harmonic content, especially with the IECrn61000-3-2 standard that defines the harmonic components that an electronic load may inject intornthe supply line, a power factor correction stage has become an integral part of most rectifierrndesigns. In this work, two motors are controlled independently using field oriented control (FOC)rnin order to enhance the over all performance in addition to front-end two-phase interleaved PFCrnstage. This study shows that using the low-cost 32 bit PiccoloTM microcontroller platform canrnprovide a true single chip solution for multiple motor drives including front end PFC.