Under the result of the inverter ' s steady sate study , the limitation limited by two factors : the minimum time of opposing voltage and the ajustive range of power factor can be gained . a qualitative analysis method based on energy decomposing is applied to study the initialized energy 在讨论串并联逆变器稳态工况的基础上，从最小反压时间和功率因数调节范围两个限制条件，求出允许的稳态运行极限负载，启动电路在此极限负载下能可靠地启动就足够了，追求更高的启动能力没有实际意义。
Shrinker / heat shrinker / shrinkable packer / heat shrinkable packer / shrinking stove / drying stove / toastor is automatic successive shrinkable packaging device and is the latest pattern in our country , using quartz farness ultrared rays tube and electricity - saving ( may save more than 15 % ) ; the humidity of shrinking and the conveying rate of the electric machine is adjusted , and the adjusting range is extensive ; original creation roller rotation devise and can work continuously 收缩机/热收缩机/收缩包装机/热收缩包装机/收缩炉/烘干炉/烤箱是目前国内最新型的自动连续收缩包装设备，采用石英远红外管加热，节电高效（节电15 %以上） ；收缩湿度和电机机传机速度稳定可调，且调节范围广；独创滚筒自转装置，可连续工作。
