CoDyPower LLC

Selected Projects

Electrical Distribution System, Quito (Ecuador)
optimal planning and design

Quito, capital city of Ecuador, has a population of 2,504,991 people (2005). It is located in the Andes mountains (South America), at an elevation of 2,800 meters above sea level. It is the highest capital city in the world housing the administrative functions.
The Historic Center of Quito has one of the largest, least-altered and best-preserved historic centers in the Americas, with about 130 monumental buildings and about 5,000 properties registered in the municipal heritage inventory, on an area of 320 hectares (790 acres).
It was, together with the historic center of Kraków in Poland, the first to be declared World Heritage Site by UNESCO on September 18, 1978.
CoDyPower has completed the design of the electrical distribution system for the Historic Center of Quito. The project applied Deltagrids, the software tool for optimal planning of electrical distribution systems developed by CoDyPower, © 2013. [see Deltagrids toolbox]. We designed an optimal solution for both low-voltage and medium-voltage electrical distribution networks including:
- the optimization of the electrical grid while satisfying the street geometry, power limits, voltage and current limits and security constraints;
- the determination of the optimal types, location and number of transformers and circuit facilities, considering also future potential grid expansion, power flow analysis and power system stability; and
- the minimization of the investment capital cost, operational losses in lines and transformers and environmental impact.
International consortium's partners:
EEQ (Empresa Electrica Quito) -Ecuador- 'utility & project leader'; TYM Asociados -South America & Spain-; Nasuvinsa -Spain-; CENER -Spain-; CoDyPower -USA-.

Multi-Megawatt Direct-Drive Wind Turbines
design, development and testing

Since 1998, and for about 15 years, we have collaborated with the wind turbine manufacturer MTOI (now with Elesewedy Electric) in the design, development, installation and testing of Wind Turbines.
In particular we developed the multi-megawatt direct-drive wind turbines TWT-1.65/70 (Class Ia), TWT-1.65/77 (Class IIa), TWT-1.65/82 (Class IIIa) and TWT-2.5: the TWT family.
The TWTs are variable-speed wind turbines with a direct-drive (gearless) drive-train, a multi-pole synchronous generator and individual pitch controlled systems (Type-4 turbines).
They have two reversible three-phase electronic power converters and an advanced robust QFT control system [see QFT control toolbox] that enables them to control active power, reactive power, voltage and frequency. They also can optimize the aerodynamic efficiency and increase power quality and reliability.
The TWT family is one of the first wind turbines in the world certified experimentally in the field to work under voltage dips (low voltage ride through, LVRT).
The control software is modular and flexible to follow customer's requirements and site characteristics.
The first TWT project started in 1998, and the first prototype was installed in Cabanillas (Navarra, Spain) and began its operation in April 2001 (see figure). Since then many wind turbines of this family have been installed in different countries, and a large amount of experimental data has been collected. The design of the controllers was made by using advanced QFT-robust and nonlinear-switching control strategies based on both, mathematical modeling and analysis of the experimental data [see QFT control toolbox].
MTOI, Elsewedy Electric

Spacecraft with Flexible Appendages,
Flying in Formation

advanced control systems

We applied our new advanced MIMO QFT robust control methodologies [see QFT control toolbox] with the European Space Agency ESA-ESTEC Darwin Mission.
The project developed high-performance and robust control strategies to regulate the position and attitude of a set of telescope/spacecraft with large flexible appendages flying in formation.
It included multiple-input-multiple-output model description, parametric uncertainty, and very demanding scientific objectives.
The main results of the project were published in two publications:
- M. Garcia-Sanz, I. Eguinoa, M. Barreras, S. Bennani. “Non-diagonal MIMO QFT Controller Design for Darwin-type Spacecraft with large flimsy appendages”. J. Dynamic Syst., Measur. & Control, ASME, Vol. 130, pp. 011006-1:15, January 2008. (Journal paper).
- M. Garcia-Sanz, I. Eguinoa, M. Barreras, “Advanced attitude and position MIMO robust control strategies for telescope-type spacecraft with large flexible appendages”. Book: "Advances in Spacecraft Technologies". INTECH. Chapter 20, pp. 443-470, ISBN: 978-953-307-551-8, 2011. (Book chapter).
The book chapter has achieved impressive readership results, with more than 5000 downloads from InTechOpen.
Click here to download and/or read the chapter

The chapter is part of the Intech book Advances in Spacecraft Technologies. InTechOpen is a global publisher. [InTech]
European Space Agency, ESA-ESTEC; Public University of Navarra

Activated Sludge WasteWater Treatment Plants
for organic matter, nitrogen and phosphorus

mutivariable control and integral design

Environmental policies on water pollution standards have become increasingly stringent during the last decade. WasteWater Treatment Plants (WWTP) play a key role in removing harmful pollutants from domestic and industrial wastewater. Activated sludge processes (ASP) in WWTPs are particularly important for minimizing concentrations of organic matter, nitrogen and phosphorus in effluents.
The high capital cost needed to build a new WWTP, the significant operational cost and the demanding water quality standards justify the effort to apply advanced control strategies to:
(1) reduce the initial capital and construction costs by applying control engineering concepts,
(2) decrease operational losses and increase energy efficiency,
(3) maximize water quality.
We have applied our new advanced MIMO QFT robust control methodologies [see QFT control toolbox] with the CEIT research center to design new fully-controlled WWTP solutions in Europe, to maximize water quality, reduce installation and operation costs and incorporate co-generation systems towards a self-sustainable plant.
CEIT, Centro de Estudios e Investigaciones Tecnicas

Located in Ohio, CoDyPower is a Control, Dynamics and Power engineering company. © Copyright CoDyPower LLC, Ohio 44022, U.S.A.