Multi battery pulse charger1/2/2023 Pure filtered sinusoidal signal of the SEIG output voltage) is used The inherent property of AHC scheme (to create a Problem in the voltage signal caused by sensing circuit or Pass moving average filter) to remove multiple zero crossings The proposed AHCĪlgorithm eliminates the need of any additional filter (like low Used as an input to the Frequency Estimation Block (FEB) The AHC scheme inherently produces a pureįiltered sinusoidal signal of the system voltage which is Reduced computation on the DSP (Digital Signal SEIG is achieved using a single-phase adaptive harmonicĬancellation (AHC) scheme along with a zero crossingīased frequency estimation algorithm which needs The voltageĪnd frequency control of the single-phase two-winding Proposed scheme, the voltage and frequency of the systemĪre controlled independently of each other. This DVFC consists of a Voltage SourceĬonverter (VSC) and a controlled auxiliary load. Small uncontrolled hydro turbine driven off-grid Multi battery pulse charger generator#Self excited induction generator (SEIG) based This paper presents the adaptive harmonicĬancellation (AHC) scheme for Decoupled Voltage andįrequency Controller (DVFC) for a single-phase twowinding Both schemes are implemented in real time using a digital signal processor. The LMDT control-based VSC-battery energy storage system scheme is also implemented for the voltage and frequency control of a single-phase SEIG. The minimal disturbance theory-based control algorithm is used for potentially fast convergence and fast dynamic response, whereas the leakage factor is added for improving the steady-state performance of the system. The control of VSC is achieved using an LMDT-based control algorithm. A single-phase VSC is used for harmonics and fundamental reactive power compensation for system voltage control and harmonics mitigation. The DVFC consists of a voltage source converter (VSC) and a closed-loop controlled dump load. It is equal to the power generated by a three-phase machine with the same frame size. Using single-point operation performed by the proposed decoupled voltage and frequency controller (DVFC), the two-winding single-phase machine can generate enhanced power output, nearly 33% higher than its normal capacity. Single-phase two-winding SEIGs are normally designed with 33% derated capacity in comparison to three-phase SEIGs of the same frame size. This paper proposes a leaky minimal disturbance theory (LMDT)-based decoupled control of voltage and frequency for two-winding single-phase self-excited induction generators (SEIGs) for enhanced power generation and power quality improvement. The proposed controller also regulates the system voltage for small variations in the prime mover speed due to its variable input mechanical power as well as during load perturbations. The proposed controller is useful for remote applications for low power generation up to 5 kW. The power loss in this shunt capacitor (Csh) is 2 W for a 5-kW self-excited induction generator, which is much less compared to its counterparts, such as the static compensator. The proposed voltage controller uses only one shunt capacitor (Csh) controlled using back-to-back connected thyristors to vary the reactive power for voltage control of the self-excited induction generator. The proposed voltage controller regulates the terminal voltage within ±5% at varying resistive, inductive, and dynamic loads. This article presents the implementation of a new voltage controller for a single-phase two-winding self-excited induction generator that is suitable for renewable energy applications, such as bio energy and diesel engine.
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