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Showing 8 out of a total of 8 results for community: Технически университет - София. (0.008 seconds)

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Нелинеен математичен модел на електромеханичните преходни процеси в еднофазен колекторен двигател с отчитане на загубите в стоманата : II Част – променлив ток

Божилов, Ганчо Йорданов; Рац, Емил Р.; Михов, Михо П.; Иванов, Адриан П.; Ризов, Пламен Малинов (рец.); Bozhilov, Gancho Yordanov; Rats, Emil R.; Mihov, Miho P.; Ivanov, Adrian P., (2004)
The article presents simulation and experimental examination of a single-phase commutator motor considering non-linearity of the magnetic chain and core losses with a mathematical model, created with MATLAB-SIMULTNK. In the material it is also presented an examination of some typical regimes as start, stop and power reverse: constant voltage, ...
Възможности за разширение на диапазона на регулиране на скоростта при импулсно управление на асинхронни електродвигатели

Божилов, Ганчо Йорданов, (1998)
A possibility for extending the speed control range of conventional induction motors under pulse control is treated. This is obtained by connecting capacitors in series to each phase of the motor. As a results, the short circuit reactance whill be decreased, the critical slip whill be increased and the control range whill be extended. Both ...
Нелинеен математичен модел на електромеханичните преходни процеси в еднофазен колекторен двигател, базиран на метода на крайните елементи : I част – постоянен ток

Божилов, Ганчо Йорданов; Михов, Михо П.; Иванов, Адриан П.; Bozhilov, Gancho Yordanon; Mihov, Miho P.; Ivanov, Adrian P., (2003)
A mathematic model of the electromechanical transients in single-phase commutator motor is developed which take into consideration non-linear variation of the winding inductances and magnetic flux as they depend by armature current. The influence of the armature winding reaction is take into account as for the computing of the magnetic ...
Замяна на графичното построение на характеристиките на постояннотокови двигатели с аналитично изчисление

Божилов, Ганчо Йорданов; Стипцов, Владимир В.; Михов, Михо П.; Bozhilov, Gancho Yordanov; Stiptsov, Vladimir V.; Mihov, Miho V., (2003)
In this paper an algorithm is offered for analytical calculation of characteristics of direct-current series and compound motors. Corelations have been developed allowing analythical calculation of the curves which offers possibility for their easy obtaining and visualization, as any manual drawing and calculations are obviated. The algorithm ...
Към определянето на електромагнитните параметри на асинхронните двигатели

Божилов, Ганчо Йорданов; Тодоров, Георги Тодоров рец.; Bozhilov, Gancho Yordanov, (2001)
In this paper a method for determination of the mechanical power and electromagnetic torque of induction motor with cage rotor by calculations is proposed based on the measuring of the stator phases voltages and currents and the angle between him without using the internal parameters. For this purpose the theory of quadripoles is using and ...
Определяне на токовете при несиметрия в кафезен ротор на асинхронен двигател посредством разсиметриращ генератор

Божилов, Ганчо Йорданов; Иванов, Кънчо Панайотов; Младенов, Валери Марков; Bozhilov, Gancho Yordanov; Ivanov, Kantcho Panayotov; Mladenov, Valeri Markov, (1995)
In this paper a state of the currents in asymmetric cage rotors of asynhronous motors is examined. The most common case of asymmetry nattily braking of rotor bar or existance of finite changes of its resistance is considered. A method is proposed based on super-position principle. This method allows the analysis of multiphase asymmetrical ...
Определяне на токовете в несиметричен кафезен ротор последством симетрични съставки

Божилов, Ганчо Йорданов; Младенов, Валери Марков; Иванов, Кънчо Панайотов; Ivanov, Kantcho Panayotov; Bozhilov, Gancho Yordanov; Mladenov, Valeri Markov, (1995)
In this paper an asymmetric state in a cage rotor using symetrical components method is considered. Many cases of asymmetry namely brakings, finite changes of resistances of bars are investigated. Determining of syrnetrical components is done based on set of equations with order much less than number of phases of rotor. A method for finding ...
Изчисляване на стационарните режими в асинхронни машини при използване на нелинеен модел на интервален метод

Колев, Любомир Варадинов; Божилов, Ганчо Йорданов; Пенев, Димитър; Kolev, Lyubomir Varadinov; Bozhilov, Gancho Yordanov; Penev, Dimitar, (1999)
In this paper, the problem of numericaly mining the steady-state in asinchronous mashines is considered. Based on a appropriate mathematic model the original problem is reduced to a system of four nonlinear algebraic equations. The solution of the latter system is obtained using an efficient interval method which guarantees convergence and ...