交流馬達驅動器是現代電力電子和微控系統中最重要的裝置之一。在電力轉換過程中，部分電能會轉換為熱能。驅動器產生的熱量必須透過冷板散發至大氣，以避免驅動器過熱。傳統冷板大多是利用鋁塊鑽孔來作為冷卻液流道。然而，由於鑽孔工藝的限制，流道通常較大，導致冷板過於沉重且熱傳性能較差。 本研究開發了一種使用扁平鋁擠型管的微流道冷板，並對其與鋁塊冷板的熱傳性能進行了測試與比較。測試結果顯示，微流道冷板的熱傳性能遠優於鋁塊冷板。在相同的冷媒流量為3.0 GPM的條件下，微流道冷板能在表面最高溫度低於120 ℃的標準下，散熱22 kW；而鋁塊冷板在相同操作條件下只能散熱13 kW。在加熱功率為13kW的情況下，鋁塊冷板的最高表面溫度為120°C，而微流道冷板的最高表面溫度為54°C。 ;AC Motor Drive is one of the most important devices used in modern power electronics and micro control systems. During the power conversion process, part of the electricity converted into heat. The heat generated from the drive must be dissipated to the atmosphere by a cold plate to avoid overheating of the drive. Most of the traditional cold plates are made of aluminum blocks by drilling channels in it to serve as the coolant flow passages. Owing to the limitation of drilling process, the flow passages are generally large and caused the cold plate heavy and low heat transfer performance. This study developed a microchannel cold plate by applying extruded Aluminum tubes. Heat transfer performance of this microchannel cold plate and a traditional Aluminum block clod plate were tested and compared. The test results show that the heat transfer performance of the microchannel cold plate is much better than that of the Aluminum block cold plate. At the same coolant flow rate of 3.0 GPM, the microchannel cold plate is able to dissipate 22 kW heat under the criteria that the highest surface temperature below 120 ℃. While the Aluminum block cold plate can dissipate only 13 kW under the same operation conditions. Under a heating power of 13 kW, the maximum surface temperature of the Aluminum block cold plate is 120°C, while the maximum surface temperature of the microchannel cold plate is 54°C.
