Fifteen years ago, many engineers were concerned about how to determine the efficiency of an adjustable-speed drive (ASD) system, in which the motor is supplied with non-sinusoidal voltage and current f...
How to calculate motor efficiency for variable-speed centrifugal pumps: knowing the efficiencies of the pump, VSD, and motor will enable the engineer to calculate the kW input for a pump, from minimum to maximum flow and head conditions for that pump. Here, the author goes through that ...
How to gauge motor efficiency.Simon, Neil
Instead, when the crane's upward force precisely balances the weight of the load, a tension T (force per unit length) is preserved in the rope. The load moves upward when the motor drives T above this point, assuming the cable is strong enough to withstand the power. Also Read: Electric...
If the motor is not put into operation immediately upon arrival, it is important to protect it against external factors likemoisture, high temperature and impurities in order to avoid damage to the insulation. Before the motor is put into operation after a long period of storage, you have to...
If the motor has 100% efficiency all electrical power is converted to mechanical energy (Pin = Pout). However such motors do not exist. Even precision-made small industrial motors have a maximum efficiency of 50-60%. Fig. 1: Motor Power Closed-loop control using Rotary Torque Sensor and US...
Workflows help ensure that essential processes are done the right way every time. A good example is the assembly of a motor car. The parts are added to the vehicle’s chassis in sequential stages, such as counting the engine and transmission, the bodywork, the seats, interior fittings, and...
atightest power budgets. 最紧的电力预算。[translate] aI'd love to see you on a wild night out. I'll ask you and Jenny along to our next night of shenanigans [Chuckle] 我会愿意看您在狂放的夜。 我将邀请您和雌鸟对恶作剧微笑我们的下夜 ()[translate] ...
In this comprehensive guide, we’ll explore the ins and outs of motor construction, design features, and the factors that can influence a motor’s performance and efficiency. Having a solid understanding of the design choices involved will equip you with the knowledge to pick the ideal motor fo...
It’s also simple to resolve if you’re already experiencing efficiency challenges with proper cleaning. When Should I Clean My Solar Panels? Solar panels are designed to self-clean to a certain degree, and panels in the UK also have the advantage of frequent rain, which will help to wash...