The invention discloses a freight elevator based on four quadrants. An IGBT power module is adopted to realize bidirectional movement of energy, an IGBT is used as a rectifier bridge, and a DSP (Digital Signal Processor) with high speed and high operational capability is used for generating SVPWM (Space Vector Pulse Width Modulation) control pulse. An input power factor is adjusted, and harmonic pollution to a power grid is eliminated; and energy generated by feedback of the motor can be sent back to a power grid, so that an energy-saving effect is achieved.
本发明公开了一种基于四象限的载货电梯;采用IGBT功率模块实现能量的双向移动,并利用IGBT作为整流桥,用高速度、高运算能力的DSP产生SVPWM控制脉冲。调整输入的功率因数,消除对电网的谐波污染;并且可以将电动机回馈产生的能量反送到电网,达到节能的效果。
Freight lift based on four quadrants
一种基于四象限的载货电梯
2022-09-02
Patent
Elektronische Ressource
Chinesisch
IPC: | B66B Aufzüge , ELEVATORS |
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