Calorimetric Efficiency Determination of Power Electronic Variable Speed Drives

Novel Recuperation Capability for Variable Speed Drives

Efficiency and recuperation capabilities of modern electrical drives have become very important features within variable speed drive applications. Regenerative electrical drives are therefore usually equipped with cost extensive pulsed active front end topologies for the recuperation mode. Contrarily, the much cheaper fundamental frequency switched front end is used. It has no electrolytic capa...

Medium Voltage Industrial Variable Speed Drives

This study presents different technologies and topologies of medium-voltage (MV) drives available on the market. The paper describes the advantages and disadvantages of each configuration and the impact in the quality of energy in the mains and motor sides when using them is also analyzed. Technical requirements and practical considerations for end users and system designers are identified for ...

Conceptual Design of Power Electronics, Control Strategies and Electrical Machines within Variable Speed Drives

The considered converter-fed permanent magnet motor could alternatively be operated in two basically different states − the vector control mode or alternatively the brushless dc, also known as electronically commutated mode. Several quality aspects concerning the system performance have been comparatively investigated in practical as well as theoretical manner. Focus is thereby given to the num...

A guide for users of variable-speed drives (VSDs)

Control of Crushing Circuits with Variable Speed Drives

Crushers play an important role in the comminution of minerals and the control of its operation can lead to an increase of the plant throughput and efficiency. This work presents a simple but effective method for controlling a crusher circuit by acting over the feeder and the speed of the conveyor belt carrying out the mineral up to the crusher. Guidelines for tuning the strategy, as well as pr...