恒压跟踪法有一定的功率损失。特别是温度变化时,太阳能电池板的开路电压随之变化，而恒压跟踪法的电压是一个恒定值，因此跟踪效率不高。-Constant tracking method has some power loss. Especially when the temperature changes, the open circuit voltage of the solar cell panel also change, and the constant voltage tracking me