‘Sensorless’

An Engineeringtalk guide

Start with the news release Direct-drive solution controls cooling tower fans from Baldor UK, which we summarised at the time by saying "Baldor has launched direct-drive technology for controlling commercial building cooling tower fans that improves reliability by eliminating moving parts while also saving energy and running quieter.". Several months prior to that, we featured the news release SCS launches sensorless vector frequency inverters from System Control Solutions: "System Control Solutions (SCS) is offering the VFD-E series of sensorless vector constant-torque frequency inverters. ".

In July 2009, we covered the news from WEG Electric Motors (UK) - take a look at Frequency inverter protects against water and dust which says: "WEG has launched its IP56-rated, CFW-08 Wash frequency inverter to provide greater protection for inverter drive applications in the food, beverage and chemical industries. ".

Take a look also at the news release from WEG Electric Motors (UK), WEG adds IP54 capability to CFW-11 inverter, as well as Frequency inverter range available up to 22kW from Nord Drivesystems, and Quicksilver releases application note from QuickSilver Controls.

Latest stories...

Mitsubishi introduces the compact D700 inverter (October 2008)

Mitsubishi Electric's D700 inverter range is small but has the power, performance and features normally associated with much larger sized drives.

Gefran launches AC inverter drives (October 2008)

Gefran UK has launched its SieiDrive ADV20 and ADV50 low-power, multifunction micro AC inverter drives.

Silverteam and Frontier Pitts develop Terragate (September 2008)

Silverteam has revealed how it worked with Frontier Pitts to develop the Terragate, a heavy duty gate capable of sliding shut in seconds.

Transparent panels produce even heat (June 2008)

Thermal-Clear heaters can integrate temperature sensors, flex circuits, controllers or other electronics to provide a total heating solution.

Motors boost performance but cut size (May 2008)

Stator currents are lower, generating lower losses due to low current demand, which in turn reduces temperatures in the windings and bearings.

Versatile drive eases integration process (March 2008)

Parker Hannifin's AC890 drive can meet the requirements of all variable speed applications, from simple motor speed control to integration of sophisticated multidrive automation or process systems.

Small drive offers multipoint positioning (March 2008)

The SJ700 offers multipoint positioning and near servo performance from a standard induction motor.

Brushless motors provide precise speed control (February 2008)

The Smartshell is a cost-effective solution suitable for demanding drive applications where precise speed control is required.

SCS launches sensorless vector frequency inverters

System Control Solutions (SCS) is offering the VFD-E series of sensorless vector constant-torque frequency inverters.
Sensorless vector drives control dock gates

The Manchester Ship Canal Company has reduced maintenance costs and improved efficiency of dock gates by switching from a two speed motor control arrangement to Eurotherm variable speed control