Abstract
In modern industry power consumption is becoming one of the most important constraints during the development phase of the product. In motor industry, significant part of the power consumption improvement can be done in motor control. Brushless dc (BLDC) motor drives are penetrating the market rapidly. Heating, ventilation and air conditioning (HVAC) systems use conventional motor drive technology and the machines found in these devices are characterized by low efficiency and high maintenance. BLDC motor drives are characterized by higher efficiency, lower maintenance and higher cost. This paper presents the analysis, design, and implementation of a cost-effective control technique for a low cost solution, six switch three-phase inverter brushless dc motor drive using single current sensor for current control. Various parameters defined optimization path for target drive solution. Also, basic framework for low cost BLDC control IC is presented. The controller is modeled and the concept is proven using simulator. Then the verification and feasibility study are done by using field-programmable gate array prototyping on the custom board made for this research. Final simulation results along with prototype operation measurements are presented as well.
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