Variable speed operation on ground, fault-protected circuits
This new variable-speed motor has low ground, and has no trouble with GFCI circuits. It uses Dynamic Rotor™ technology switches at low frequency, producing ground currents well below the Class A GFCI limit of 6 mA and eliminating the ground fault circuit interrupter tripping that comes from high-frequency PWM switching. The motor's patented design puts the electronic power switches right in the coils in the rotating armature. Desired speed and torque is controlled by stationary light-emitting diodes on the motor's end-bell, which turn the rotating switches on and off. It doesn't need an external encoder, instead using internal speed feedback. It meets all CE standards, offers high torque at low speed and has nearly no RFI/EMI. The motor and controller are integrated together, so there are no cables between the control and the motor. The design reduces electronic circuitry and parts, making it cheaper and more reliable. It is reversible, runs up to 5,000 rpm, runs off analog or digital signals and can be programmed.
Our LinkedIn systems and product design engineering group discusses if they are happy with their decision of remaining a technical contributor instead of becoming a manager.
Against a backdrop of mounting product complexity and a need to keep a lid on development costs, companies are recognizing a need to make simulation a more integral part of the design process. In response, vendors in the CAD world are building out CAE functionality as part of their CAD suites while simulation vendors are building tighter integrations to leading CAD tools. Keith Meintjes, Ph.D., Practice Manager, Simulation and Analysis at CIMdata, Inc., joins Design News CAD Editor Beth Stackpole in this radio program to explore the new face of integrated CAD and CAE, how companies are benefitting from this tighter partnership between platforms, and how integrating CAE earlier in the development cycle pays off in optimized product designs.
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