- 學位論文
具功率因數校正之智慧型省能乾衣機
Intelligent energy-saving clothes dryer with power factor correction
摘要
本文主要以具功率因數校正的智慧型省能乾衣機為核心，設計升壓型功率因數校正轉換器、直流無刷馬達速度控制驅動系統及溫度控制驅動系統。在電源側以升壓型轉換器為架構，採用平均電流控制法，完成主動式功率校正目的，符合國際電流諧波規範。而在烘乾技術方面，提出一嶄新的省能專利自動烘乾停機控制方法，主要係利用微處理機偵測其排氣口溫度梯度變化估測衣服相對溼度，控制加熱器的開關及馬達速度的狀態，藉由排氣口溫度梯度曲線變平緩時，表示衣物已烘乾，乾衣機便會自動關閉加熱器，結束烘衣步驟，接著滾筒與風扇將以高速運轉抽入機外冷空氣，達到快速冷卻衣物的防皺及除靜電功能，當排氣溫度接近外部溫度時將會完全停機，如此，衣物取出時不燙手且降低靜電產生，確實達到乾衣、省錢與節能減碳之成效，並具人性化及便利性，只需One Touch按下按鈕，無須像傳統乾衣機需預估衣服重量及烘依時間預估設定等其他繁瑣的設定，也無須花時間在旁邊等待乾衣機停機，更無須擔心時間設定不當時造成過度烘乾及不乾的情形發生，本全數位專利烘乾驅動控制系統節能效率高於市售節能乾衣機種約20%以上。
並列摘要
The core of this paper is based on intelligent energy-saving clothes dryer with power factor correction. And design the boost power factor correction converters, BLDC motor speed control drive system and temperature control of the drive system. The power supply uses the boost converter structure and adopts average current control method to complete the active power calibration purposes. It meets the regulations of international current harmonics wave. In drying technology, a new energy-saving automatic drying control methods improved from original patent is designed.The microprocessor is used to detect the exhaust temperature gradient for controlling the shutdown of the heater and the motor speed. When the small change of the exhaust temperature gradient is reached, it represents that no more water inside clothes can be evaporated and the clothes has been dry enough, the heater is automatically shut down and steps to end the dryer. At this moment, the motor, which is used to drive the drum and fan, keeps operating, and the fan speed is controlled to drive more the cooler outside air to cool down hot clothes faster. It can also obtain less-wrinkle of clothes and less static electricity on clothes. While the exhaust temperature is close to that of outside air, the dryer will be completely shut down, the clothes will be less-wrinkle because of fast and enough cooling. Thus, the user will not feel hurt taking clothes even right after the dryer stop.And this dryer can obtain energy-saving and carbon-reducing effect,and the above user friendly designs make user more convenient using.While this dryer is used, it does only need to one-touch on the power and without any set-up process. More than that, the user does not worry the wrong time setup resulting in over drying or not-enough drying. It is proved from experiments that the energy-saving effect of this innovative method is 20% high than those of other dryers.