为降低开关频率和减少开关损失,需增加功率滞环比较器环宽,否则引起瞬时有功功率和直流电压波动,影响系统的性能;
The hysteresis wide is widened for decreasing switching frequency and energy losses, which causes the pulsation of instantaneous active power and direct current voltage.
虽然串联喷嘴阻力损失的增加,使射流平均能量有所降低,但射流的瞬时能量得到了调制,激励出更大的流体振荡。
Although the resistance force increase of series nozzles makes the average energy of jet flow decreased but it lets the instantaneous energy modulated to impel more fluid resonances.
预应力筋的预加应力并不是常量,而是瞬时或随时间增长而逐渐减小,预应力筋这种预加应力减少的现象称为预应力损失。
The prestress of prestressed reinforcement is not constant, but gradually reduces with time growth. This reduction of prestress is called prestress loss.
区分瞬时性和永久性故障为目的的自适应重合闸,能减少故障对电能的损失,增强电网的稳定性。
The self-adaptive reclosure, which is aimed to distinguish the transient fault and the permanent fault, can reduce the power loss caused by faults and enhance the stability of power system.
区分瞬时性和永久性故障为目的的自适应重合闸,能减少故障对电能的损失,增强电网的稳定性。
The self-adaptive reclosure, which is aimed to distinguish the transient fault and the permanent fault, can reduce the power loss caused by faults and enhance the stability of power system.
应用推荐