Double-damping mixed star connection vibration-free brake frequency conversion device
A technology of star connection and frequency conversion device, which is applied in the direction of AC motor deceleration device, electric motor/converter plug, intermediate conversion to DC conversion equipment, etc., which can solve the problem of increased motor temperature, noise and vibration, and complicated control , The inverter is prone to overvoltage or overcurrent tripping, etc., to achieve the effect of precise braking control
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[0019] The present invention will be further described below in conjunction with accompanying drawing:
[0020] like figure 1 , figure 2 and image 3 As shown, the dual-damping hybrid star-connected vibration-free braking frequency conversion device of the present invention includes a frequency converter, and the frequency converter includes a power supply circuit, a rectification circuit, an inverter circuit, a main control circuit, a drive circuit, a voltage sampling circuit and a current Sampling circuit, the input end of the rectification circuit is connected to the three fire wires R, S, T of the three-phase power supply, the output end of the rectification circuit is connected to the input end of the inverter circuit, the three-phase output end of the inverter circuit is connected to the three-phase output end of the load motor M The power supply input terminals U, V, and W are connected, and the voltage sampling circuit and the current sampling circuit respectively s...
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