Multi-motor drive with common inverter for pumping unites
Аннотация
Abstract This paper presents the results of a research of a multi-motor drive with the electric coupling and a common grid-controlled inverter for pumping facilities of pumping irrigation systems. This system is the most preferable in compliance with the requirements for a controlled electric drive of water-lifting pumping facilities, in which a group of water-pumping sets works in parallel in a common hydraulic pressure circuit. In addition, this electric drive system can be used in multi-motor electric drives of the general purpose industrial grades that do not require absolutely strict coordination of the rotational speeds of their drive of the wound-rotor induction motor, depending on the requirements of the process conditions. In addition, a clear advantage of this system is that it is characterized by a high efficiency compared to other known systems of controlled electric drive, since it only converts the slip energy of the drive motors.