1-6 AC POWER SYSTEM AC system in industrial trend Industries have already employed AC power system by making use of its features. Three major features are: Thereby industrial truck engineers worldwide have already been aware of the splendid features of AC power sys- tem to be implemented in electric forklift trucks. New AC drive motor systems have been adopted not only in the smaller capacity models, but also in the larger capacity models. This new system resolves the opposing factors between larger output necessity and compact- ness. System design advantages Product level advantages 1 Simpler and smaller construction of motor More powerful motor can be used without increasing size.
2 Three-phase AC control realizes wider control range. Wide control range offers a higher performance and operability. 3 Motor brushes and contactors are dispensed with. Reduced maintenance cost as the needs for servicing motor brushes and contactors are eliminated. Industry 1970 80 90 Machine tool DC AC Train DC AC Electric Automobiles (EV) DC AC Electric Forklifts DC