David C Whipple

Title: Innovations of David C Whipple

Introduction

David C Whipple is an accomplished inventor based in Cohasset, MA (US). He holds 2 patents that showcase his expertise in the field of electrical engineering and motor technology. His innovative designs focus on enhancing efficiency and performance in mechanical and electrical systems.

Latest Patents

One of his latest patents is the "Low loss permanent magnet motor." This invention features a back EMF controlled, synchronous, permanent magnet motor capable of extremely high rotation speeds at high efficiency. The motor includes a permanent magnet flux source and excitation coils for producing a rotating magnetic field mounted on an iron-free form to substantially eliminate core loss and resulting rotor drag. Back EMF is determined directly from the excitation and controls the excitation to produce a torque angle of substantially 90 degrees between the magnet and coil fluxes. Coil excitation is used at maximum efficiency, and hunting is avoided. The permanent magnet provides a high flux density that also allows a low current in the motor coils, thus reducing coil copper losses to further improve efficiency.

Another significant patent is the "Inertial energy storage device and synchronous rotary electrical machine." This invention includes a synchronous rotary electrical machine for bidirectional conversion between mechanical and electrical energy. It features a stator with two axially spaced sets of circumferentially spaced teeth, field excitation means to provide an axially polarized magnetic field, and stator windings with a plurality of coils. The rotor has circumferentially spaced teeth facing the stator teeth and a circumferential flywheel mass radially spaced from its rotational axis. The motor control circuit includes sensor means for sensing the position of the rotor relative to the stator, generating a waveform for driving the machine, and controlling the amplitude of the waveform and current provided to the machine.

Career Highlights

David C Whipple is associated with The Charles Stark Draper Laboratory, Inc., where he contributes to cutting-edge research and development in engineering. His work focuses on creating innovative solutions that address complex challenges in the field of energy conversion and motor technology.

Collaborations

Throughout his career, David has collaborated with notable colleagues, including Robert D Drescher and David B Eisenhaure. These partnerships have fostered a creative environment that encourages the exchange of ideas and advancements in technology.

Conclusion

David C Whipple's contributions to the field of electrical