ZYBP medium and high frequency converter

●Vector control technology: By measuring and controlling the stator current vector of the AC motor, and controlling the excitation current and torque current of the AC motor respectively according to the principle of flux orientation, the purpose of controlling the torque of the AC motor is achieved.

●Oscillation suppression technology: Local instability will occur when the motor is lightly loaded or no-loaded. At this time, the current amplitude fluctuates greatly. The oscillation of the current may cause the system to trigger protection due to overcurrent or overvoltage. Our company adopts a superior current oscillation suppression algorithm, which can effectively suppress current oscillation and ensure stable and reliable operation of the system.

●Neutral point drift function: After detecting a unit fault, the unit can be bypassed within 100us to perform star point drift technology to maintain output line voltage balance and maximize voltage utilization.

●Faulty unit hot reset technology: If the unit fails during operation and the inverter has bypassed it and continues to run, the faulty unit can be reset during operation without waiting for the inverter to stop.

●Fast flying start technology: By collecting the frequency, amplitude, and phase information of the motor's stator voltage in real time, when a flying start is required, the initial voltage of the inverter is adjusted to be consistent with the stator voltage, and then the output voltage is quickly adjusted to normal on this basis. output. Using this technology, the frequency converter can automatically reset and then start automatically after being protected by load impact, thus avoiding losses caused by frequency conversion protection shutdown in important occasions (such as high-temperature fans in cement plants). The fast flying start technology enables the inverter to reset from the protection state within 1 second and resume operation with load.

●Efficient optical fiber communication technology: The communication cycle between the main control and the unit is 1.5us, which has extremely high communication efficiency and good real-time communication.

●Frequency conversion to power frequency: The frequency converter brings the motor to the power frequency, detects the frequency, phase and amplitude of the power grid, and then adjusts the frequency converter output to be in the same frequency and phase as the power frequency. After the adjustment is completed, connect the motor to the power grid and then disconnect from the inverter.

●Power frequency switching to variable frequency: First, the frequency converter detects the frequency, phase and amplitude of the power grid. After switching in, the frequency converter directly outputs the corresponding voltage vector to the motor, and finally exits the power frequency. This technology can meet the needs of comprehensive control of multiple motors and soft start of large-capacity motors.

●Multiple control methods: You can choose local control, remote control box control, DCS control, support MODBUS, PROFIBUS, etc.

Communication protocol, frequency setting can be given on-site, remotely simulated, communicated, etc., and supports frequency preset, acceleration and deceleration functions.

●Output voltage automatic voltage stabilization technology: The frequency converter detects the bus voltage of each unit in real time and adjusts the output voltage coefficient according to the bus voltage to achieve automatic voltage stabilization function. Avoid the impact of power grid fluctuations on the output voltage.

●Built-in UPS power module: When the peripheral control power supply loses power, it will immediately switch to the backup power supply of the transformer in the inverter.

●Instantaneous power outage and restart function of the power grid: The power outage time can be set, and the general default value is 3 seconds, which can provide a maximum waiting time of 60 seconds.