The spot welder exhibits the electrical energy characteristics of quick load changes, large impact current, short duration and low power factor. Reducing the impact of these characteristics on power system has become a problem that the automobile manufacturing industry and other industries must solve urgently.
With the advantages of easy maintenance, simple and reliable operation and quick smelting, the intermediate-frequency furnace is widely used in foundry production. However, the furnace is likely to bring out the inherent characteristic of low power factor during usage, leading to power utilization penalties and increasing production costs.
Coal is the main source of energy in China. Safe production in coal mine is related to the sustainable development of the coal industry and national energy security, and also to the safety of millions of miners and physical assets. Xinwen Mining Group is the largest subsidiary of Shandong Energy Group. To fully guarantee power utilization safety and efficiency in the mine area, Xinwen works hand in hand with ZHIYUAN Electronics and uses E6000 Power Quality Analyzer provided by ZHIYUAN Electronics to carry out comprehensive evaluation and management of the power supply quality in the mine area and make a general survey of hidden hazards in the power supply system.
When operating with an asymmetrical three-phase load, a generator will cause the rotor to consume additional energy and generate heat, leading to overall or local temperature increase in the motor, and causing the inverse magnetic field to generate additional torque which will result in motor vibration and the generation of three-phase unbalance.
The appearance of converters has brought innovation to industrial automation control and motor energy conservation. However, converters have also brought the disturbance of harmonic pollution. A converter is mainly composed of two parts: an inverter and a rectifier. The basic reason that causes electrical energy pollution generated by convert is the inverter. At the same time, the rectifier is liable to generate harmonics during operation.