The simplest scheme of the valve stage is a outline with an intermediate DC circuit and a gate converter. The asynchronous-valve cascade provides the types of protection and interlocks from. The applied control scheme for regulating the speed of movement.
Аннотация к работе
Asynchronous-valve cascade Vashchenko M. A. Studying the electrical drive, we can often hear the phrase an AC engine with an asynchronous-valve cascade. The AVC is easily included in the system of automatical the monitoring of the production process. This stage significantly increases interest in electrical drives, capable of engine speed monitoring. It is used in frame for high-power fans, pumps and compressors. One of the main advantages of this stage is the reduction of electricity intake. That is due to the fact that in large enterprises energy saving is one of the most grave criteria. Another big advantage is advance of the qualitative of products achieved by the energy recuperation slip of the AC engine. Fig. 1. Theelectricaloutline (a), theoutline forreplacing the rectified currentoutline (b), themechanicalcharacteristics (c) The figure shows a diagram of the AVC that provides the engine operation. If we look at the specifications, we will see that the speed lower than the synchronous engine’s speed is