International Journal of Multidisciplinary Studies and Innovative Technologies

Yazarlar: Berkan ZÖHRA, Mehmet AKAR

Konular:Mühendislik

Anahtar Kelimeler:Line Start,High Efficiency,Synchronous Motor

Özet: Electric motors have a large share of the electricity consumed in Turkey as in every developing country. In addition, according to the available data, 35% of Turkey's electricity is consumed by asynchronous motors, which are heavily preferred in the industry. Therefore, with the introduction of these motors more efficient still, visible reduction in electricity consumption can be achieved. In addition, if more efficient motors are preferred in industrial applications where asynchronous motors are used to a large extent, the company can also save on energy costs. Today, there are many products available in the electric motors market that can meet operating conditions and these products are characterized by international standards. With these standards adopted by electric motor manufacturers, regulation is made on many issues such as frame sizes and operating conditions of electric motors which are introduced to the market. According to the highly accepted IEC 60034-30-1 electric motor standards and according to the electric motors in the range of 0.12 – 1000 kW shaft power efficiency; It is classified as IE1 - standard efficiency, IE2 - High Efficiency, IE3 - Premium efficiency and IE4 - Super Premium Efficiency. As a result of technological limitations and material limits, asynchronous motors can be offered to the market in IE3 and below efficiency. However, by modeling the asynchronous motor rotor using high performance permanent magnets, electric motors capable of delivering high efficiency, power factor and power density can be produced. As a result of the combination of squirrel cage and permanent magnets in their rotor, these motors, which have a hybrid structure are known in the literature as “Line Start Permanent Magnet Synchronous Motor”. These robust and low maintenance motors, such as asynchronous motors, offer efficiency in standards above IE3 thanks to the Permanent magnets in their rotor. On the other hand, the production process of these motors is more complicated and costly than asynchronous motors because of the permanent magnet. With this study, it was discussed how long it would take to pay the purchase cost of the motor under high production costs and the fees for the introduction to the Turkish market of Line Start Permanent Magnet Synchronous Motors. In addition, the transition to efficient motors in Turkey has been shed light on the process.

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