Wisconsin Alumni Research Foundation


WEMPEC-Funded Technologies

The Wisconsin Electric Machines and Power Electronics Consortium (WEMPEC) is an internationally renowned power electronics and electric machines research group located at UW–Madison. With the support of more than 80 corporate sponsors, WEMPEC's team of professors, graduate students and international scholars work together to research and develop the newest technologies and techniques in electric machines, power electronics, actuators, sensors, drives, motion control and drive applications.

Several technologies that were developed using WEMPEC funding are available for licensing through WARF. These technologies include improved power converters, semiconductor modules, electric machines and more.


Dual-Rotor, Radial-Flux, Toroidally-Wound, Permanent Magnet Machine with High Efficiency and High Torque Density

High torque density and high efficiency are two of the most desirable features of electrical machines. A significant amount of research over the past two decades has focused on improving these paramet...

Field Controlled Axial Flux Permanent Magnet Electrical Machine

A continuing need exists for compact, efficient, inexpensive electrical machines with high torque capability over a large speed range and the ability to control machine speed. This need is particularl...

Device and Method for Reducing the Electromagnetic Interference (EMI) Generated by Power Converters

As a byproduct of normal operation, electrical circuits can induce unwanted signals, or noise, in other circuits, thereby degrading performance. This problem, known as electromagnetic interference (EM...

Power Conditioning Architecture for Wind Turbine

Wind-powered generators are an increasing source of power for many countries. However, before their use can become widespread, they must be able to work effectively with the existing utility grid. P06426US

Permanent Magnet Synchronous Motor Self-Sensing Drive System

Permanent magnet synchronous motors (PMSM) provide torque through the interaction of a magnetic field generated by one or more armature coils and one or more permanent magnetic elements. These motors ...

Semiconductor Interconnect Design for Small, Inexpensive, Integrated Current Sensing with Improved Reliability

Semiconductors, which regulate power flow in many modern electronic devices, use interconnects such as bond wires or lead frames to integrate different components: chip, substrate and terminals. Inter...

Induction Motor Wastes Less Power

The induction machine is by far the most heavily used industrial motor, and ranges in size from a fraction of a horsepower to more than a megawatt. It produces torque by the electromagnetic interactio...

Lighter, Cheaper Multilevel Converter for Adjustable Speed Drives

An adjustable speed drive (ASD) is a power electronics device that controls the speed of machinery. These devices also save energy for industrial processes that require adjustable speed or controlling...

Axial Flux-Switching Permanent Magnet Machine for High Speed Operation

High speed electric machines are needed in many applications including HVAC, industry, flywheels, fans, fuel-efficient vehicles, aircraft and much more.

Flux-switching permanent magnet (F...

New Rotor Magnet Configuration Delivers Greater Efficiency at a Lower Price

Permanent magnet machines (PMs) are common in electric and hybrid vehicles, renewable energy and other industrial applications. These utilize permanent magnets made from rare earth materials (such as ...

Inverter for Common Mode Voltage Cancellation

In a drive system, a voltage source inverter (VSI) may be used to transfer real power from a DC power source to an AC load. Conventional VSIs consist of two or three phase-legs, each of which is a ser...

Wound Field Synchronous Machines with Enhanced Saliency, Performance

Permanent magnet (PM) machines are used in today’s hybrid and electric vehicles due to their ideal performance characteristics. However, due to cost uncertainty and overseas sourcing, other types of...

Converter Control with Reduced Link Capacitor

A converter is an electrical device for converting electrical energy from one form to another, such as between alternating current (AC) and direct current (DC), between different voltages or frequenci...

Vernier Permanent Magnet Machines with High Torque Density

The vernier permanent magnet (VPM) machine first appeared about 20 years ago. This motor has the potential to create torque well beyond other types of permanent magnet machines and compete with rare e...