Proceedings ArticleDOI
Nonlinear control of three-phase voltage source PWM converter
Zhang Zhi,Liu Xueliang,Jiang Ming,Liu Chang +3 more
- pp 6183-6186
TLDR
A control system with double close-loops of voltage and current is proposed based on the synchronous rotating reference frame, and this control scheme can realize decoupled control of the three phase PWM rectifiers.Abstract:
The mathematical model of three-phase voltage source PWM rectifier is established in the dq rotating frame. Aiming at the highly coupled of the active and reactive current of three-phase PWM rectifier, a control system with double close-loops of voltage and current is proposed based on the synchronous rotating reference frame. A sliding-mode control algorithm for the out-voltage-loop is proposed, and the exact feedback linearization method is designed for the current loop. The whole system is simulated and experimented. The whole system has good robustness, and this control scheme can realize decoupled control of the three phase PWM rectifiers. The power factor of the system is kept at unity. The PWM rectifier has constant output voltage, and the whole system has good dynamic and static performance.read more
Citations
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Journal ArticleDOI
Cascaded Control of Back-to-Back Converter DC Link Voltage Robust to Grid Parameters Variation
TL;DR: The article elaborates on the mathematical modeling and control structure design of a grid-connected back-to-back voltage source inverter with a complex dc link and an LC filter for the current harmonics reduction and shows highly robust performance for $\pm$20% parameter change and a large span of grid impedance variation.
Proceedings ArticleDOI
PV Farm Operation withIndependent Reactive Power Compensation Regardless of the Active Power Level Generation
TL;DR: An algorithm is proposed that effectively allows a PV plant to inject a given amount of reactive power into the grid regardless of the irradiance and temperature levels, providing an overall robust ancillary service to support the grid.
Proceedings ArticleDOI
A reactive power compensation strategy for photovoltaic power generation systems based on improved particle swarm algorithm
TL;DR: In this article , the reactive power compensation control method of the nine zones diagram is used to derive the output power of the photovoltaic power generation system, the line loss of the distribution network and the change of node voltage according to the temperature and light condition of the PV system in the coming day, and takes the minimum line active power loss as the optimization target.
Proceedings ArticleDOI
A reactive power compensation strategy for photovoltaic power generation systems based on improved particle swarm algorithm
TL;DR: In this paper , the reactive power compensation control method of the nine zones diagram is used to derive the output power of the photovoltaic power generation system, the line loss of the distribution network and the change of node voltage according to the temperature and light condition of the PV system in the coming day, and takes the minimum line active power loss as the optimization target.
Journal ArticleDOI
Control of Three-Phase PWM Rectifier as Virtual Synchronous Machine Using an Integral Sliding Mode Controller
Swapnil Gadgune,P. M. Joshi +1 more
TL;DR: The proposed ISMC is able to stabilize the DC link voltage and guarantee the input current sinusoidal and the control strategy is used to operate a rectifier as a virtual synchronous motor.
References
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Journal ArticleDOI
A new mathematical model and control of a three-phase AC-DC voltage source converter
V. Blasko,V. Kaura +1 more
Abstract: A new mathematical model of the power circuit of a three-phase voltage source converter (VSC) was developed in the stationary and synchronous reference frames. The mathematical model was then used to analyze and synthesize the voltage and current control loops for the VSC. Analytical expressions were derived for calculating the gains and time constants of the current and voltage regulators. The mathematical model was used to control a 140-kW regenerative VSC. The synchronous reference-frame model was used to define feedforward signals in the current regulators to eliminate the cross coupling between the d and q phases. It allowed the reduction of the current control loops to first-order plants and improved their tracking capability. The bandwidths of the current and voltage-control loops were found to be approximately 20 and 60 times (respectively) smaller than the sampling frequency. All control algorithms were implemented in a digital signal processor. All results of the analysis were experimentally verified.
Proceedings ArticleDOI
Direct power control of PWM converter without power source voltage sensors
TL;DR: In this paper, the authors proposed a novel power control strategy for a PWM converter with no power-source voltage sensors, which has two main features to improve a total power factor and efficiency.
Journal ArticleDOI
Variable Structure Systems With Sliding Modes in Motion Control—A Survey
TL;DR: The aim is to give implementable sliding mode design solutions for complex motion systems, actuators and supply converters by providing a frame for further study of sliding mode applications in motion control systems.
Journal ArticleDOI
DC-bus voltage control of three-phase AC/DC PWM converters using feedback linearization
TL;DR: In this article, a fast voltage control strategy of three-phase AC/DC pulsewidth modulation (PWM) converters applying a feedback linearization technique is proposed, and the experimental results are provided to verify the validity of the proposed control algorithm for a 1.5 kVA insulated gate bipolar transistor PWM converter system.
Journal ArticleDOI
Input-output linearization and zero-dynamics control of three-phase AC/DC voltage-source converters
TL;DR: In this article, a feedback controller for three-phase voltage-source pulsewidth modulation (PWM) AC/DC boost converters under a cascade control structure is proposed for input-output linearizability of the system modeled in d-q synchronous reference frames.