2012年7月28日 · Pumps are one of the most common variable speed drive (VSD) system applications and special interest has focused on improving their energy efficiency by using variable speed control instead of throttling or other less efficient flow control methods.

Speed can be controlled in a number of ways, with the most popular type of variable speed drive (VSD) being the variable frequency drive (VFD). for energy savings, improved perfor-mance, and reduced life cycle costs. Pump speed adjustment is not …

Make pay-back calculations on VSD vs Fixed Speed vs multiple pumps. Review further economic benefits of improved pump efficiency e.g. coatings, low loss seals, and the use of high efficiency motors.

2016年3月26日 · Variable speed drives are crucial when limiting the life cycle costs (LCC) of a pump station. The three main costs are energy, initial investment and maintenance. Many analyses show that energy consumption is the dominating element of the LCC, especially if pumps run more than 2,000 hours per year.

Learn how adding a variable frequency drive (VFD) to your pump can change it from a pump that operates at one speed (single flow rate), to a pump that can operate at variable speeds (range of flow rates) without the use of a gear box or switching to a different electric motor.

2016年7月26日 · In many cases, a variable speed drive (VSD) can provide real benefits to a pumping system in regards to energy efficiency, reliability and system control. However, to get the greatest benefit, the right VSD must be matched to the system and application. Here, we look at some of the important considerations to factor into your choice of VSD.

2017年4月6日 · It is well known that a variable speed drive (VSD) can be used to reduce energy consumption by slowing down a pump instead of throttling a valve to deliver the desired flow rate. But what savings could be achieved if a VSD was installed?

2024年4月11日 · Variable speed drives (VSDs) are used across a vast range of industries to control the speed of pumps and motors and maintain optimal operational efficiency. Here, we dive further into how they work, the differences between the …

2018年12月26日 · It is a misconception that adding a variable speed drive (VSD) to a pump will increase its efficiency. When considering the wire-to-water efficiency of the pump, motor and VSD, each component that is added lowers the wire-to-water efficiency at a respective flow rate because each component has losses associated with it.

2015年11月16日 · Using variable frequency drives (VFDs) with hydraulic power units can also lower average noise emissions, as the pump speed is reduced during partial load operations, such as pressure holding or idling. The average sound level can be lowered by as much as 10-20 dB (A), improving environmental working conditions.