Integrated Machines and Drives
Brett Nee with adviser Patrick L. Chapman
Increasingly, power electronics drives are providing control over machines’ torque/ speed. Integration of the drive and the machine can lead to improvements in cost and performance. Research is being conducted in system integration, utilizing each subsystem’s important characteristics to aid in the design of the other subsystems, for example, a machine controller which mitigates a dc bus capacitor’s current ripple by injecting a small torque ripple to the load. As a result the dc bus capacitor could be reduced, in turn decreasing the system volume. Another option is integrating passive magnetic components in the machine or system package, which provides the ability for active or passive powerfactor correction.