Abstract:  The traditional bridge crane, with high energy-consuming electronic control system, high failure rate and poor speed governing precision, is no longer able to satisfy the requirements of modern industry. Applying frequency control technology in bridge crane system could effectively imp...Read more »

Frequency Control Program of Mono Overhead Cranes Mono overhead cranes use dedicated conic motors for lifting. Vibration there is great with frequent operation. Inrush current is also great. Terminals of contactors are often burnt due to inrush current in the motor, which increases maintenance am...Read more »

Abstract:     This paper describes the structure and control requirements of the construction hoist, and makes a detailed description of electrical design, model selection, safety testing and adjustment methods of VVVF system of construction hoist. Keywords: Inverter; Construction hoist 1. Intro...Read more »