Abstract
The article deals with the optimal control of the positional electric drive of the stator element of a segment-type wind turbine. The calculation options charts current in the assumption of the minimum energy consumption and the implementation of line chart current using the phenomenon of capacitor discharge. The analysis of the implementation is expressed in a jump-like change in current and a triangular graph of the speed change. This article deals with small capacity synchronous wind turbine generators with a segment type stator. These units have the possibility of intentionally changing the air gap between the rotor and stator. This allows: (1) Reduce the starting torque on the rotor shaft, which will allow the rotor to pick up at low wind speeds. (2) Equivalent to change of air gap in this case is change of excitation of synchronous generators. Thus, the purpose of the article is to consider a method of excitation of generators in a segmented design, by controlling the gap with the electric drive, while providing control should be carried out with minimal losses.
Highlights
Increased starting torque on the shaft of segmental wind turbine generators [1] predetermines the special requirements for the control system, aimed at reducing the starting torque.Depending on the type of generator, type of excitation source and location of excitation are possible.Optimal control is widely used for positioning drives and various actuators to increase performance and improve a number of performance indicators.In this presentation, we consider a position electric actuator characterized by a very small movement of the controlled object, with a predetermined duration of switching, having a short-term nature of operation
The realization of this installation confirms the applied laws and control methods in relation to the current diagram of the electric drive of the wind turbine segment; the simplification of realization affects the deviation from the ideal current diagram by 11%, which is acceptable for this installation
The essence of further work is to minimize this percentage of deviation; as practice shows, the minimization of 11% deviation from the ideal current diagram will require appreciation of both the element base and the control system
Summary
Increased starting torque on the shaft of segmental wind turbine generators [1] predetermines the special requirements for the control system, aimed at reducing the starting torque.Depending on the type of generator (synchronous, inductor or classical), type of excitation source (separately powered excitation winding or on permanent magnets) and location of excitation (rotor or stator, different options of moving segments upgrade) are possible.Optimal control is widely used for positioning drives and various actuators to increase performance and improve a number of performance indicators.In this presentation, we consider a position electric actuator characterized by a very small movement of the controlled object, with a predetermined duration of switching, having a short-term nature of operation. Depending on the type of generator (synchronous, inductor or classical), type of excitation source (separately powered excitation winding or on permanent magnets) and location of excitation (rotor or stator, different options of moving segments upgrade) are possible. Optimal control is widely used for positioning drives and various actuators to increase performance and improve a number of performance indicators. In this presentation, we consider a position electric actuator characterized by a very small movement of the controlled object, with a predetermined duration of switching, having a short-term nature of operation. A specific requirement is the lowest possible power consumption. The purpose of the research is to find and implement an optimal control with the requirement of the lowest power consumption, i.e., with minimal losses in the armature
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