如果在铁芯上再装设曲折连接的副绕组，还可向变电所的低压负载供电。
The instrument can also supply low-voltage load of substation if zigzag connected second…
当电机作四极运转时，先按二极运转启动，然后切换开关使主绕组抽头A2与A4连接电机既作四极运转，此时副绕组开路。
When the motor runs in four-pole mode, it is started at two-pole mode and taps A2 and A4 are then connected together. In the meantime secondary winding is open.
实时检测变压器原方绕组的谐波电流，通过逆变器产生与原方绕组谐波电流成比例的谐波补偿电流注入变压器副方多补偿绕组中。
The harmonic compensation currents proportional to the harmonic current in the primary winding, which is detected real-timely, are injected to the multiple secondary winding of the transformer.
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