5.DTC today and tomorrow
With the update of DTC, it can provide performance beyond the high-demand, high-dynamic applications that are the target of its invention. Improvements in software and the commonality of high-power microprocessors make economical rationality for DTC transmissions to be more widely implemented. DTC's ability to quickly respond to changes in process variables such as pressure, tension or position using superior speed and torque control power makes DTC attractive for more industries.
In addition, AC drives offer incredible energy savings potential for a wide range of variable speed pump/fan applications. Because there is a cubic relationship between pump speed and power, if a process allows the pump to run at 50% speed, then only 1/8 of full power can be used.
Direct torque control has continued hardware and software development over the last 30 years of use. Based on a solid theoretical foundation and DSP technology, DTC has overcome the limitations of earlier processors. Today, powerful processors can quickly execute complex control algorithms, update motor model parameters, and switch-driven transistors for optimum performance.
ABB's respected transmission engineering tradition and vast resources have been invested in the development of direct torque control. DTC maintains the vitality of technology. By integrating intelligent user interfaces, drive diagnostics and system-level software, it has evolved into a brand that goes beyond “torque control”.
Looking to the future, ABB will follow its same footprint in the long-lasting DTC technology. ABB Drive customers can be confident that their current benefits from direct torque control will last forever.
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