Modeling and control of a synchronous generator with an active DC load

Jadric, Ivan; Borojevic, D.; Jadrić, Martin

doi:10.1109/63.838103

Cited by 154 publications

(74 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The detailed mathematical models of three stage generators can be seen in Appendix A. If the generator's speed is constant and treated as a parameter of the system, Equations (1)- (5) which are linear differential equations can be rewritten for small perturbations by simply adding ∆ to all currents and voltages [16][17][18][19].…”

Section: Three Stage Generator Transfer Functionmentioning

confidence: 99%

“…When establishing synchronous generator low-order transfer function, set the motor under constant rotational speed, and ignore the damper winding effect, and factors di d /dt, di q /dt in the armature windings, then the transfer function can be simplified as a first-order formula as in Equation (17). K g and τ g are the amplification factor and the time constant that can be calculated by the motor parameters.…”

Section: Three Stage Generator Transfer Functionmentioning

confidence: 99%

See 1 more Smart Citation

Digital Generator Control Unit Design for a Variable Frequency Synchronous Generator in MEA

Yang²,

Zhang

2018

Energies

View full text Add to dashboard Cite

Variable frequency power generation systems have been adopted for modern aircraft power systems, thus, a new generator control unit (GCU) must be designed to regulate the output voltage and obtain high quality power supply under a wide frequency range from 360 Hz to 800 Hz. In this paper, a dual digital signal processor (DSP) structure-based GCU was proposed. Multi-loop control structure was adopted with the controller parameters varying adaptively at different working conditions to obtain better performance. Different root-mean-square (RMS) calculation algorithms have been compared and the final RMS calculation scheme was determined to realize the trade-off between accuracy and computing efficiency. Experimental results show considerable performance improvements of the generator output voltage under various operating conditions with the proposed GCU.

show abstract

Section: Three Stage Generator Transfer Functionmentioning

confidence: 99%

Section: Three Stage Generator Transfer Functionmentioning

confidence: 99%

Digital Generator Control Unit Design for a Variable Frequency Synchronous Generator in MEA

Yang²,

Zhang

2018

Energies

View full text Add to dashboard Cite

show abstract

“…The simulated results and experimental tests demonstrated higher efficiency of IGVSCF compared to more conventional designs. The thesis by Jadric (1998) is interesting as the VSCF system was designed utilizing the ground-based variablespeed gas-turbine for electrical power generation. A system analyzed consisted of a variable-speed SG that supplies an active DC load to inverter through a 3-w diode rectifier required adequate modeling in both time and frequency domain.…”

Section: Literature Reviewmentioning

confidence: 99%

“…This work was conducted with scholarship supported by the International Cooperation Program CAPES at the Minnesota State University, Mankato, financed by CAPES-Brazilian Federal Agency for Support and Evaluation of Graduate Education within the Ministry of Education of Brazil. (Jadric, 1998). The SG model as used in this study can be now described with a system of nonlinear ordinary differential equations (ODE):…”

Section: Acknowledgementmentioning

confidence: 99%

See 1 more Smart Citation

Design of DC-Link VSCF AC Electrical Power System for the Embraer 190/195 Aircraft

Freitas¹,

Daidzic²

2017

Journal of Aviation Technology and Engineering

View full text Add to dashboard Cite

A proposed novel DC-Link VSCF AC-DC-AC electrical power system converter for Embraer 190/195 transport category airplane is presented. The proposed converter could replace the existing conventional system based on the CSCF IDGs. Several contemporary production airplanes already have VSCF as a major or backup source of electrical power. Problems existed with the older VSCF systems in the past; however, the switched power electronics and digital controllers have matured and can be now, in our opinion, safely integrated and replace existing constant-speed hydraulic transmissions powering CSCF AC generators. IGBT power transistors for medium-level power conversion and relatively fast efficient switching are used. Electric power generation, conversion, distribution, protection, and load management utilizing VSCF offers flexibility, redundancy, and reliability not available with a conventional CSCF IDG systems. The proposed DC-Link VSCF system for E190/195 delivers several levels of 3-w AC and DC power, namely 330/270/28 VDC and 200/ 115/26 VAC utilizing 12-pulse rectifiers, Buck converters, and 3-w 12-step inverters with D-Y, Y-Y, and Y-D 3-w transformers. Conventional bipolar double-edge carrier-based pulse-width-modulation using three reference AC phase signals and up to 100 kHz triangular carriers are used in a manner to remove all even and many odd super-harmonics. Passive low-pass filters are used to remove higher harmonics. The RL AC loads are active in connection with the synchronous and induction AC motors and also include passive AC loads. The overall power factor exceeded 85%. Total harmonic distortions for voltages and currents are below 5%, thus satisfying the MIL-STD-704F and the IEEE Std. 519 power-quality standards, while avoiding the need for active filters. Several PI and PID controllers that regulate synchronous generator DC excitation and inverter banks were designed and tuned using the continuous-cycle tuning method to offer required performance and stability of the feedback loop. Mathworks's Simulink TM software was used for simulation of electrical components and circuits. Several critical scenarios of aircraft operations were simulated, such as go-around, to evaluate the transient behavior of the VSCF system.

show abstract

Dynamic Average Modelling of Rectifier Loads and AC‐DC Converters for Power System Applications

Martínez-Velasco¹

2014

Transient Analysis of Power Systems

View full text Add to dashboard Cite

Modeling and control of a synchronous generator with an active DC load

Cited by 154 publications

References 17 publications

Digital Generator Control Unit Design for a Variable Frequency Synchronous Generator in MEA

Digital Generator Control Unit Design for a Variable Frequency Synchronous Generator in MEA

Design of DC-Link VSCF AC Electrical Power System for the Embraer 190/195 Aircraft

Dynamic Average Modelling of Rectifier Loads and AC‐DC Converters for Power System Applications

Contact Info

Product

Resources

About