船舶主机废热利用感应电机的最优控制

张桂臣, 马捷

上海交通大学海洋工程国家实验室



摘要:

为了深入研究船舶节能减排技术,提出了感应电机在船舶主机废热利用系统中的最优控制策略.分析了涡轮增压器与感应电机组成的废热利用节能系统的动态特性,利用系统的动态模型设计了LQG最优控制器,实现了感应电机的能量回馈控制.数学仿真与半实物模拟试验的结果表明,利用可逆感应电机可改善涡轮增压器的动态性能,该控制方案有效协调转子转速与主机排气不稳定的关系,提高了废气涡轮增压系统的动态响应、稳定性和废热利用率.

关键词:  船舶主机  节能减排  废热利用  感应电机  能量回馈  最优控制

DOI：10.11918/j.issn.0367-6234.2011.11.024

分类号:U665.11

基金项目:国家自然科学基金资助项目(51179102);中国博士后科学基金资助项目(20110490716)



Optimal control of induction motor utilizing marine main engine waste heat

ZHANG Gui-chen, MA Jie

State Laboratory of Ocean Engineering,Shanghai Jiao Tong University,200030 Shanghai,China

Abstract:

To study the technology of marine energy-saving and emission reduction,an optimal control strategy of induction motor is described for marine main engine waste heat utilizing system.The energy-saving system utilizing waste heat,which consists of turbocharger and induction motor,is analyzed;LQG optimal controller which employed dynamic model of exhaust gas turbocharger-induction motor is designed,and the energy feedback control of induction motor is realized.Mathematical simulation and hardware-in-the-loop experimental results show that reversible induction motor can enhance the dynamic performance of turbocharger.The proposed control scheme effectively harmonizes the relationship between rotor speed and the instability in main engine exhaust gas,and improves the dynamic response,stability and waste heat utilizing efficiency of exhaust turbocharger system.

Key words:  marine main engine  saving-energy and emission reduction  waste heat utilization