3.1.2. Large Change Rate of Output Power

A large change rate of the genset output power will cause its operation points to deviate from the target pre-set trajectory. Due to rapid change of the transient drive system demand power, and switching operation points requiring a certain response time, the points may deviate from the trajectory in the switching process. This deviation will cause the operation points to depart from the minimum fuel consumption curve and spread over a lower efficiency district, resulting in a deterioration of fuel consumption.

The transition processes of different change rates of output power were simulated to illustrate the process, as shown in Figure 6. It indicates that the actual working points deviate from the pre-set minimum fuel consumption curve because of the rapid power change and insufficient responsiveness. However, this phenomenon disappears and the points track the trajectory well if the power change is slow.
