Control structure of full power type AC-DC-AC converter for wind power generation
An AC-DC-AC converter and control structure technology, applied in motor generator control, wind power generation, electronic commutation motor control, etc., can solve the problems of inability to achieve four-quadrant operation, large current harmonics, and slow dynamic response.
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[0033] See attached picture.
[0034] The control structure of the generator-side converter: the main circuit of the generator-side converter adopts an inverter topology in which an uncontrollable rectifier bridge is connected in series with a PWMDC / AC bridge inverter; the inductance L1 and reactance C1 are mainly used for filtering and the reactive component of the storage circuit, so that the input current of the inverter is smoother, so as to facilitate the realization of PWM current control; ID and IA are high-precision Hall current sensors, UA and UD are high-precision Hall voltage sensors, and they are respectively Provide accurate current and voltage sampling signals for DSP; the power module of the charging and discharging main circuit adopts the IPM module, and the input AC voltage signal on the side of the rectifier bridge is rectified and smoothed by the inductor L1 and capacitor C1 to obtain a relatively smooth DC voltage signal; The DC bus voltage signal UD is mea...
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