A control method for a multi-inverter system resonance suppression device
A multi-inverter, resonance suppression technology, applied in harmonic reduction devices, AC networks to reduce harmonics/ripples, single-network parallel feeding arrangements, etc., to achieve easy implementation, simple and effective resonance phenomena, and suppression of resonance phenomena Effect
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[0027] The following describes the implementation of the present invention with specific examples in conjunction with the accompanying drawings.
[0028] figure 1 Shown is a structural principle diagram of the multi-inverter system resonance suppression device circuit and control method proposed by the present invention. A multi-inverter system resonance suppression device provided by the present invention includes a voltage source inverter 10 and its control system 20. The voltage source inverter includes a DC side 101, a power switch tube 102, and an LCL output Filter 103, the control system 20 includes a sampling unit 201, a harmonic extraction unit 202, a command current calculation unit 203 and a current tracking control unit 204, and the control system 20 calculates the PWM switch according to the voltage signal and current signal obtained by sampling. The drive signal is sent to the voltage source inverter 10, and the voltage source inverter 10 controls its power switc...
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