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In this paper, a three phase delta connected self-excited induction generator (SEIG) excited by two capacitors and feeding a single phase load is investigated in both transient and steady state cases. Using symmetrical components analysis, two simple formulas are derived to calculate the required values of the two capacitors that result in balanced stator phase currents under rated conditions, which...
The present paper treats the transient and the steady state modeling of an autonomous induction generator, in order to study its transient response as a function of several parameters. A simple method is proposed to determine the adequate excitation needed to reach the rated voltage in standalone operation. The efficiency of the recommended strategy is validated by a simulation model developed in...
This paper derives the mathematical expression for the minimum excitation capacitance of self excited induction generator under different types of load and speed, and also studies the performance of a self-excited induction generator (SEIG) driven by a prime mover. Mathematical model of the isolated SEIG under balanced loading conditions in d-q stationary reference frame is developed to study the...
A new generalized model for stability analysis based on a small signal modeling is proposed, for matrix converter fed induction motor drive system. This approach considers the analysis when the drive system operates at unity as well as non-unity input power factor at the source side. With the help of this model, different factors which affect the matrix converter stability are analyzed including stator...
For fluctuations of the DC bus voltage in dual PWM motor drive system, which is caused by the frequent changes in motor running, the generation mechanism is analyzed. A new control strategy for dual PWM system is proposed, which is based on EL model and the load power feed forward. By using DC steady state voltage compensation and the Power load forecasting, the stable DC voltage and the unity power...
In this paper, the dynamic capacitor voltage control (DVC) is proposed, designed and applied to suppress the resonance for the high power current source converter (CSC) fed permanent magnet synchronous motor (PMSM) drives. The key is to control the capacitor voltage to follow the fundamental voltage reference dynamically. The proposed DVC affords some attractive features: Firstly, it can suppress...
Stand-alone power systems (SPS) are attracting more and more interest with the global movement toward the distributed generation. Due to their disconnection to the power grid, they are suffering from poor load following capability under load variations. In order to solve this problem, this paper provides an AC power solution based on flywheel energy storage. The proposed flywheel system is characterized...
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