Multi-zone Integrating Regulator to Control the Electric Drives with Parallel Regulation Channels

This article dwells upon the principles of constructing the control system for a group of electric drives with parallel regulation channels (for example, water supply pump stations, air ventilation and fire extinction systems, etc.) on the basis of multizone integrating regulator with frequency-pulse-width modulation. It contains functional charts of discrete control systems and combined smoothly discrete regulation. It also considers a system able to self-diagnose catastrophic malfunctions of the circuit components and an automatic switch of reserve control channels. Herein is presented the case of a discrete control system for enterprise-level pumps used to supply recycling water. This system contains four electric drives with water pumps and is able to switch on the reserve control channels automatically. The article may be of interest to specialists in the field of power electronics and information electronics, electric drives and process automation.