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No Motor is an Island
(with appologies to John Donne) No motor has value unless it’s in an application. The same is true of a motor/ controller drive system. Yet, as even the smallest of drives gets smarter their flexibility to contribute to the overall performance of the application has not kept pace. Deep down, […]
Driving Low Voltage High Speed BLDC Motors Above 1 KW
Gary Box Software Defined Power www.softwaredefinedpower.com 1.0 Background and motivation 1.1 Features and benefits of high speed or high pole count BLDC motors 1.1.1 The case for speed An unmistakable trend in off grid motion control is the migration to electrical alternatives for existing mechanical, hydraulic and pneumatic systems. This […]
A System Approach to Maximizing Motion Efficiency
An IEEE study in 2008 concluded that 60% of electrical energy in the United States is used to run motors, the vast majority of which are induction motors running directly on the grid. Historically, the use of the electrical grid to directly provide motion was the killer app of AC […]
Look Ma… No More (added) Wires!
I firmly believe that at some point, 100% of all electric motor power will pass through at least one semiconductor. Most, if not all will be under microcontroller control and will be able to communicate with the outside world. But just how will that be done? Last month I touched […]
A System Approach to Maximizing Motion Efficiency
Gary Box Software Defined Power An IEEE study in 2008 concluded that 60 percent of electrical energy in the US is used to run motors, the vast majority of which are induction motors running directly on the grid. Historically, the use of the electrical grid to directly provide motion was […]
Designing In-Hub Brushless Motors
Lowell Christensen, Founder, Vice President of Engineering TruTech Specialty Motors, Plymouth, MN Electric motors formatted to fit inside the wheel of a vehicle have their own special constraints that impact the design of propulsion systems. In-hub motors are traction motors in that they change rotary motion to linear motion. They are […]