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The self shutdown and modularization of power electronic devices, the high-frequency switching mode of converter circuits, and the full digitalization of control methods have promoted the miniaturization, multifunctional, and high-performance of variable frequency power supply devices.
Especially with the full digitization of control methods, the enormous information processing capabilities of microcomputers are utilized, and their software functions are continuously strengthened, enhancing the flexibility and adaptability of frequency conversion devices.
owadays, general-purpose frequency converters with small and medium-sized capacity have been universalized. The sine pulse width modulation (SPWM) frequency converter using high-power self closing switching devices (GTO, BJT, IGBT) as the main switching device has become the mainstream of general frequency converters.
Low frequency torque output of 180%, good low-frequency operation characteristics ■ Maximum output frequency of 600Hz, capable of controlling high-speed motors
Comprehensive detection and protection functions (overvoltage, undervoltage, overload) for instant power outage and restart
Protection functions such as acceleration, deceleration, and stall prevention during operation
The automatic identification function of motor dynamic parameters ensures the stability and accuracy of the system
Fast response during high-speed shutdown
Rich and flexible input and output interfaces and control methods, with strong universality
