An inverter parallel control system and control method
A technology of a control system and a control method, which is applied in the direction of converting irreversible DC power input into AC power output, output power conversion devices, electrical components, etc., can solve the problem of unsatisfactory harmonic current sharing effect, poor dynamic performance, The impact is very large and other problems, to achieve the effect of improving load adaptability, excellent system steady-state and transient performance indicators, and high reliability
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[0026] The specific composition of the inverter parallel control system based on the combination of instantaneous average current feedforward and power regulation is as follows: figure 1 As shown, it includes a digital control module 100, an analog control module 200, a front axle inverter module 300 and an LC filter module 400, the above modules are connected in sequence, and the digital control module 100 includes an amplitude value controller 104 and A current sharing controller module 101, the current sharing controller module 101 includes an instantaneous average current feedforward controller 102 and a power regulator 103, and the instantaneous average current feedforward controller 102 is used to use the instantaneous average current as a reference signal to invert The output current of the device is used as feedback to realize current sharing control. The power regulator 103 includes a PQ calculation module 105, an active power adjustment module 106 and a reactive power...
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