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Scotty… I Need More Power!
If you are a geek like me and are ever in Detroit, don’t miss the automakers’ museums. The sheer size of the Ford museum is astounding. It even includes a working late 19th century factory, complete with steam engine, overhead shafts and belt and pulley drives to the machine tools. […]
Off Grid Mission Focused Electric Motion
As engine driven hydraulic and pneumatic applications migrate to electric motion, the concept of designing the entire system to meet mission requirements becomes important. Using recent developments in 1 to 10Kw power conversion, it is now possible to design the motion system to the optimum operating voltage for the application […]
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 […]
Digital Power
Welcome to the Digital Power blog. I’m Gary Box, CTO of Software Defined Power and I’ll be blogging from time to time on all things related to converting energy digitally. Note I’m not limiting myself to just converting electrical energy to mechanical energy (or vice versa), but I’ll be stepping […]
An Open Source Motion API
Gary Box Digital Power Engineering www.digitalpowerengineering Abstract The advent of Machine to Machine (M2M) networking presents both an opportunity and challenge to the Motor and Drive industry, particularly for older applications that have yet to move to electronic control and higher efficiency motors. To get on the ‘Cloud’ these cost […]
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 […]