White goods motors are typically oversized to account for the torque requirements of transients and surge currents. Scalar techniques for control can result in inefficient systems and noisy operation. This in turn leads to energy efficiency for many white goods that hovers in the 40% to 50% range.

By implementing the control system with TI's digital signal controllers, designers are able to implement smaller, quieter motors that offer power factor correction along with energy efficiency up to 90%.

Leading whitegoods manufacturer looks to add higher efficiency and quieter motors while reducing systems cost.

• A Three-Phase Motor Drive for Domestic Washing Machines (spry056.pdf, 1490 KB)
  Download

Recommended Devices

TMS320C24x digital signal controllers

• Up to 40 MIPS
• Flash and ROM pin compatible versions
• Highly integrated control peripherals
• Starting at under $2 (LF2401A) - TI offers a complete line of over 27 digital signal controllers with various combinations of memory (Flash, ROM and RAM) and peripherals starting at less than $2.00.

Recommended Development Systems:

TI's eZdsp development kit is standalone platform for demonstrating and running software and allows designers to easily start hardware and software development. Evaluation modules (EVMs) provide an excellent platform to evaluate TI devices and quickly develop prototypes, demos, and proof-of-concept applications.

TMS320F24x Development kits

• TMS320LF2401A eZdsp
• TMS320F2407A eZdsp
• TMS320F2407A EVM

Recommended Software:

• Code Composer Studio (CCStudio) Integrated Development Environment (ships with all hardware tools)
• C24x Digital Motor Control Library (PID, Park, Clark, PWM Drivers, etc)