WaveCrest Adaptive Motor® System
In simplest terms, the patented WaveCrest Adaptive Motor® system consists of a multi-phase, brushless DC motor arranged such that the rotor surrounds and rotates about the center-mounted stator.

The stator consists of a series of independently controlled electromagnets. The electromagnetic cores are identical and isolated, and driven by their own power electronics module. Soft magnetic composite materials are used to optimize the magnetic circuit made possible with isolated cores. The rotor consists of rare earth permanent magnets and FEA-proven housings that are designed to withstand the inhospitable environment of an in-wheel drive.

The associated control system and software are integral to the operation of the motor and account for its flexible, broad range of performance. A digital signal processor activates the electromagnets by analyzing motor position, desired torque, and the electrical characteristics of the energy management system that powers the motor. The proprietary adaptive algorithms adjust the current and excitation sequence of each electrical phase to maintain the motor at the optimal operating condition. The control system dynamically reconfigures the motor thousands of times per second to be always at peak efficiency while simultaneously providing a high level of fault tolerance. The result is one of the highest average efficiencies available in the motor market today.

Powered by a 750-watt WaveCrest Adaptive Motor® system in its rear wheel hub, the M-750 is ideal for many different transportation and recreational uses. Riders can pedal without assistance for exercise, ride easily past congested traffic to run errands, and add as much power as they need to level hills and cover long distances.
Additionally, the M-750 is being used in multiple police and security applications. Its frame, the DARPA-approved Montague Paratrooper® folding frame, is rugged, light and durable enough for plane drops and treacherous terrain. The motor is virtually undetectable with low noise and no heat or emissions.

The first five TidalForce electric bikes were delivered to WSSU’s police department in April 2004.