| Title |
2kW Class Three-Phase Inverter Compressor Drive System for Refrigerator Vehicles |
| Authors |
Keun-Woo Han ; Young-Gook Jung |
| DOI |
http://dx.doi.org/10.5207/JIEIE.2018.32.5.030 |
| Keywords |
2kW Class Inverter Compressor ; Three-Phase Inverter Drive System ; Sensorless Control ; Refrigerator Vehicles ; Characteristics of Output ; Efficiency and Discharge Temperature |
| Abstract |
In the conventional cooling / refrigeration system for commercial refrigeration vehicles, there are many changes in temperature and humidity at the time of stopping the engine. In particular, there is a problem that the cooling / refrigeration efficiency is poor during the summer season. To solve this problem, this study proposed a 2kW class three-phase inverter compressor drive system for refrigerated vehicles. The proposed system drives the compressor by AC / DC rectifier, DC / DC boost converter and three-phase DC / AC inverter with AC voltage generated from three-phase PMSG connected to engine of refrigerated vehicle. In order to verify the performance of the proposed system, experiments were conducted by the hardware and test bench. Experimental results show that the output characteristics of the compressor are good in the normal state of the refrigerator load. Also, it showed that the voltage / current characteristics are stable regardless of the load variation even in the transient state where the refrigerator is operating or stopped. The efficiency of the proposed system was 93.6% and the standby current was low at 7mA under the conditions of 2900rpm constant speed control. Since 98% of the vehicles currently in operation are equipped with air conditioners, the proposed system can be extended to non-starting inverter cooling technology for electric vehicles and hybrid vehicles, which is expected to have a great economic effect. |