May I ask, experts, what wiring method is currently popular for rectifiers in China? Let’s discuss the details when we meet
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Our unit currently uses a thyristor-based double-star configuration with balanced reactors as the rectifier circuit (12-pulse per unit)； The rectifier transformer is a grid-side autotransformer-type device; its primary winding is connected in a wye delta configuration, with phase shifts of (+7.5°, –22.5°) and (–7.5°, +22.5°) ； The secondary winding features a double reverse-star-connected balanced reactor wiring ； Are there any latest technologies available right now?
There are mainly two wiring methods for rectifiers: the double inverted star circuit with a balancing reactor and the three-phase bridge circuit. When the rectified voltage is not greater than 400V, a double-star circuit with balanced reactors is advisable ； A three-phase bridge circuit is used when the voltage is greater than 400V. The wiring methods for phase-shift rectifier transformers mainly include the fork principle wiring, the polygon principle wiring, and the zigzag wiring (also known as Z wiring).
For the current 15,000-ton single-tank model, are there any detailed wiring specifications available for the rectifier transformer and rectifier?
The rectifier can be of three-phase bridge type, while the transformer can use a star/triangle or wye-delta configuration. It can be considered as an asymmetric 24-pulse waveform relative to your existing system. The specific method requires you to provide specific parameters, such as the ideal no-load voltage and rated current.
The relationship between the rectified voltage and the number of production slots