Abstract
This paper presents a voltage control approach to a Switched Reluctance Generator (SRG) using a Proportional Integral (PI) controller. The principle of operation is described and the considerations in the design of controller are discussed. A current loop transfer function of an SRG with power converter has been systematically derived in order to obtain a small-signal model for the generator. The generated voltage is controlled by manipulation of the setpoint of the current control of the generator. The entire voltage loop controller and current control have been simulated and tested with a 250 W SRG prototype. The control law of the control system was implemented on a digital signal processor (TMS320F28379D). To verify the feasibility of the proposed voltage control, the performances are evaluated by numerical simulations and experimental tests with an 8/6 SRG for different rotational speeds and resistive loads. Experimental results demonstrate that the DC output voltage from SRG can be controlled well using a simple linear controller.
Highlights
The Switched Reluctance Generators (SRGs) are widely used in many industrial applications such as the fields of battery charging, aircraft power systems, and electrical traction [1,2,3,4]
A continuous conduction mode (CCM) for a wind power plant application is proposed with the determination of the optimal control parameters of SRG, as stated in [10]
To improve the performance of the SRG power generation system, the Proportional Integral (PI) control method is proposed in this paper
Summary
The Switched Reluctance Generators (SRGs) are widely used in many industrial applications such as the fields of battery charging, aircraft power systems, and electrical traction [1,2,3,4]. A continuous conduction mode (CCM) for a wind power plant application is proposed with the determination of the optimal control parameters of SRG, as stated in [10]. A algorithms are proposed to obtain the optimal parameters of an SRG for wind generation systems to reduce the torque ripple, as discussed in [17]. In [7], the authors proposed a model predictive control (MPC) control for SRG driven wind power generation systems. To put this paper into a more general view, this work presents the results of research demonstrating that a simple approach can be very useful for engineers in need of SRG controllers of low complexity and which are digitally implementable.
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