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Operating an inverter for coupling an electric machine, designed for operation on AC voltage, with an AC voltage network
Operating an inverter for coupling an electric machine, designed for operation on AC voltage, with an AC voltage network
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机译:操作用于将设计为以交流电压运行的电机与交流电压网络耦合的逆变器
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摘要
A method for operating an inverter for coupling an electric machine designed for operation on AC voltage, to an AC voltage network, includes the steps of determining a torque-related machine current component composed of electrical machine currents of the electrical machine, detecting an actual value for a magnetic flux, determining an actual value of a machine torque of the electric machine by linking the detected magnetic flux to the torque-related machine current component, determining a torque difference between the actual value of the machine torque and a setpoint value of the machine torque of the electric machine, filtering the torque difference by a bandpass filter which is tuned to a machine-side natural frequency, determining a compensation signal by processing a filter output signal of the bandpass filter, and superimposing the compensation signal on the network control signal and/or the machine control signal.
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