scholarly journals The cascade methods of doubly-fed induction machine for generator system

2021 ◽  
Vol 12 (1) ◽  
pp. 112
Author(s):  
Diep-Dung Nguyen ◽  
Ngoc-Hoan Than ◽  
Duc-Tuan Hoang
Keyword(s):  
Power Control ◽  
Output Voltage ◽  
Induction Machine ◽  
Induction Machines ◽  
Control Circuit ◽  
Generator System ◽  
Power Generator ◽  
Analysis And Evaluation ◽  
Doubly Fed Induction Machine ◽  
Doubly Fed

This paper presents two solutions to cascade the doubly-fed induction machines in the power generator systems. The first solution is a traditional one with the power control circuit located on the stator-side. The second solution is a new one with the power control circuit located on the rotor-side. After analysis and evaluation, it is shown that the solution with the power control circuit located on the rotor side has advantages over the solution with the power control circuit located on the stator-side. Therefore, the authors chose the solution which is a power control circuit located on the rotor side to study, analyze in-depth and run the simulation. The results show that the proposed solution has a very good quality, the output voltage of the generator always follows the grid-voltage even when changing the gird-voltage or changing the speed of the generator.

Power control of a doubly fed induction machine via output feedback

2004 ◽  
Vol 12 (1) ◽  
pp. 41-57 ◽  
Author(s):  
Sergei Peresada ◽  
Andrea Tilli ◽  
Alberto Tonielli
Keyword(s):  
Power Control ◽  
Output Feedback ◽  
Induction Machine ◽  
Doubly Fed Induction Machine ◽  
Doubly Fed

Control Scheme of a Brushless Doubly Fed Induction Machine for Stand-Alone Generator Systems

2013 ◽  
Vol 344 ◽  
pp. 153-158
Author(s):  
Chuan Zeng
Keyword(s):  
Induction Machine ◽  
Constant Voltage ◽  
Generator System ◽  
Voltage Output ◽  
Control Scheme ◽  
Doubly Fed Induction Machine ◽  
New Type ◽  
Doubly Fed ◽  
Doubly Fed Machine ◽  
Vector Control Strategy

The brushless doubly-fed machine (BDFM) is a new type of induction machine which has different structure and operation principle than a conventional AC machine. In this paper, the electromagnetic relation of BDFM is analyzed, and a stand-alone generator system is presented. Based on the analysis, the characteristic and applicability of scale and vector control strategy is build, both of which realize constant voltage output in stand-alone generator systems of variations load.

scholarly journals Optimal feedforward torque control for nonlinear induction machines considering stator & rotor copper losses and current & voltage limits

2021 ◽  
Author(s):  
Christoph Hackl ◽  
Andre Thommessen
Keyword(s):  
Induction Machine ◽  
Induction Machines ◽  
Optimal Operation ◽  
Torque Control ◽  
Lagrangian Formalism ◽  
Maximum Torque ◽  
Optimal Feed ◽  
Doubly Fed Induction Machine ◽  
Doubly Fed ◽  
Copper Losses

In order to analytically solve the optimal feed-<br>forward torque control (OFTC) problem of induction machines (IMs), the unified theory for synchronous machine introduced in [1] is extended by considering relevant IM nonlinearities and incorporating stator and rotor copper losses. Instead of the well known Maximum Torque per (stator) Current (MTPC) operation strategy, Maximum Torque per (copper) Losses (MTPL Cu ) is realized and extended by the Maximum (rotor) Current (MC r, ext ) strategy due to stator and rotor current limitations. Modeling magnetic saturation and cross-coupling effects leads to a con-<br>strained nonlinear optimization problem which is solved based on the idea of sequential quadratic programming (SQP). The second order Taylor approximations are formulated in implicit form as quadrics. Applying the Lagrangian formalism to the quadratic problem leads to analytical solution for the optimal rotor currents. For a doubly-fed induction machine (DFIM), a decision tree for optimal operation management is presented and the OFTC is validated in simulations for a real nonlinear IM.

scholarly journals Grid Forming Stator Flux Control of Doubly-Fed Induction Generator

Energies ◽  
2021 ◽  
Vol 14 (20) ◽  
pp. 6766
Author(s):  
Norbert Klaes ◽  
Florian Pöschke ◽  
Horst Schulte
Keyword(s):  
Reactive Power ◽  
Induction Machine ◽  
Induction Generator ◽  
System Response ◽  
Doubly Fed Induction Generator ◽  
Generator System ◽  
Flux Control ◽  
Doubly Fed Induction Machine ◽  
Stator Flux ◽  
Doubly Fed

The doubly fed induction generator is widely used in wind power applications. For stand-alone operation of this machine, the control of the stator flux with fixed voltage and frequency has been proposed. This paper extends the stator flux control of the doubly fed induction machine by droop mechanisms, which vary the setpoint of flux magnitude and frequency depending on active and reactive power. This gives the doubly fed induction generator system unknown grid supporting and grid forming performance. The validation of the proposed control scheme has been conducted on a 10kVA testbed system. The closed-loop behavior of the system has been proven to enable grid-tied and islanded operation with the same control structure. The system response to load changes and islanding events show no disruptive transients in both conditions.

On the passivity-based power control of a doubly-fed induction machine

2013 ◽  
Vol 45 (1) ◽  
pp. 303-312 ◽  
Author(s):  
I. López-Garcı́a ◽  
G. Espinosa-Pérez ◽  
H. Siguerdidjane ◽  
A. Dòria-Cerezo
Keyword(s):  
Power Control ◽  
Induction Machine ◽  
Doubly Fed Induction Machine ◽  
Doubly Fed
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