基于瞬时优化的混合动力燃气热泵控制策略  

Hybrid-Power Gas Engine Heat Pump Control Strategy based on Instantaneous Optimization

作　　者：颜洁[1] 蔡亮[1] 陈涛[1] 

机构地区：[1]东南大学能源与环境学院

出　　处：《建筑热能通风空调》2017年第6期11-16,43,共7页Building Energy & Environment

基　　金："十二五"国家科技支撑计划项目(2011BAJ03B14)

摘　　要：将无级变速器(CVT)运用到混合动力燃气热泵系统中以实现系统传动比的连续调节来提高系统的性能。本文对驱动系统和热泵系统进行建模,把蓄电池储存/消耗的电能等效成发动机燃气热能,提出基于等效能量消耗最小的瞬时优化控制策略,并在MATLAB/SIMULINK仿真平台上对该种策略进行仿真试验。仿真结果当压缩机转速分别小于1390 rpm、在1390 rpm到1810 rpm之间、大于1810 rpm时,驱动系统分别运行在模式A、模式B、模式C;并获得发动机和电机的扭矩分配以及热泵性能系数COP、制热量、CVT速比和蓄电池SOC变化。发动机工作点基本分布在经济区内,发动机扭矩、燃气消耗率be和燃气流量m都保持在较小值,分别维持在29.5 N·m、283 g/(kW·h)和2.66 kg/h,从而证明了所提出的瞬时优化控制策略的有效性。Taking a coaxial parallel hybrid-power gas engine-driven heat pump （HPGHP） as an example, and continuously variable transmission （CVT） is applied to the system to achieve continuous adjustment of transmission ratios and keep engine working in its high efficiency area. To evaluate the proposed novel HPGHP, the steady-state model of drive system and heat pump system are established and an instantaneous optimal control strategy aiming at minimizing the equivalent energy consumption is proposed based on the models. The penalty function is introduced to modify the objective function. In addition, conditions of the drive system can be classified into 3 modes according to the value of . The switching law is obtained on MATLAB/SIMULINK platform. The results show that when compressor speed is less than 1390 rpm, the drive system works in Mode A, SOC （state of charge of battery） increases from 0.6 to 0.66, motor torque decreases from 15N ＂m to ON ＂m ; when compressor speed falls between 1390 rpm to 1810rpm, the drive system works in Mode B,SOC is unchanged as motor doesn＇t operate; When compressor speed is more than 18 l0 rpm, the drive system works in Mode C, SOC reduces to 0.49 and motor torque increases to 20 N ＂m. And with the increase of compressor speed, the transmission ratio of CVT icvt gradually reduced from 4.1 to 1.15; based on instantaneous optimal control strategy, most of the working points of gas engine are distributed in the designated economic zone, engine torque, gas consumption rate and gas flow rate are relatively stable, which can be maintained at 29.5 N·m, 283 g/（kW-h） and 2.66 kg/h respectively.

关 键 词：混合动力 燃气热泵 无级变速器 等效能量消耗 数值模拟 

分 类 号：TU83[建筑科学—供热、供燃气、通风及空调工程]