ZFeng 900 Series 110Kw-T-P General Vector Variable Frequency Drive
The working principle of a frequency converter is based on the
on-off function of power semiconductor devices, which achieves
speed control of the motor by changing the frequency and voltage of
the motor's working power supply. Its main components include: - Rectifiers: convert input AC power into DC power.
- Filter: Filter the DC power output from the rectifier to remove
pulsating components and improve power quality.
- Inverter: Convert filtered DC power into AC power with adjustable
frequency and voltage, and supply it to the motor.
- Control circuit: responsible for receiving external control
signals, controlling the inverter, and implementing various
protection functions for the motor
Core functions- Speed regulation function: The frequency converter can infinitely
adjust the motor speed within the range of 0-100% according to
actual needs, meeting the requirements of various production
processes.
- Energy saving function: By adjusting the speed of the motor, the
frequency converter can reduce the energy consumption of the motor
and improve energy utilization efficiency. Especially in square
torque loads such as fans and pumps, the energy-saving effect is
particularly significant.
- Protection function: The frequency converter has multiple
protection functions such as overcurrent, overvoltage, overload,
and overheating, ensuring that the motor can be safely stopped in
case of abnormal conditions and avoiding equipment damage.
Selection and Installation- Selection: When choosing a frequency converter, factors such as
motor type, power, speed range, accuracy requirements, and working
environment need to be considered. At the same time, it is also
necessary to pay attention to whether the rated input voltage,
output voltage, output frequency, rated power and other parameters
of the frequency converter match the motor.
- Installation: The frequency converter should be installed in a well
ventilated area with excellent heat dissipation conditions,
avoiding installation in damp, dusty, and vibrating environments.
At the same time, attention should be paid to the grounding and
electromagnetic compatibility of the frequency converter to ensure
the stable operation of the equipment.
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