Abstract
This paper evaluates methods of braking high capacity belt conveyors used in brown coal surface mines in Poland. Complications associated with belt conveyor braking, particularly when a conveyor moves down a slope, are analyzed. A method of calculating mechanical characteristics of wound-rotor induction motors during direct current braking taking into account saturation of magnetic circuit is presented. Characteristics of the SZUr motor with 630 kW power, used in brown coal mining, are also given. Analyses show that motor operation can be efficiently braked in two ways: 1. by changing additional resistance in rotor circuit (e.g. using thyristor controller); 2. by changing intensity of electric current supplied to stator winding (e.g. using a rectifier). (3 refs.) (In Polish)
Citation Formats
Kedzior, W, Muchorowski, J, and Pienkowski, K.
Statistical mechanical characteristics of slip-ring induction motors when direct current braking.
Poland: N. p.,
1980.
Web.
Kedzior, W, Muchorowski, J, & Pienkowski, K.
Statistical mechanical characteristics of slip-ring induction motors when direct current braking.
Poland.
Kedzior, W, Muchorowski, J, and Pienkowski, K.
1980.
"Statistical mechanical characteristics of slip-ring induction motors when direct current braking."
Poland.
@misc{etde_5709402,
title = {Statistical mechanical characteristics of slip-ring induction motors when direct current braking}
author = {Kedzior, W, Muchorowski, J, and Pienkowski, K}
abstractNote = {This paper evaluates methods of braking high capacity belt conveyors used in brown coal surface mines in Poland. Complications associated with belt conveyor braking, particularly when a conveyor moves down a slope, are analyzed. A method of calculating mechanical characteristics of wound-rotor induction motors during direct current braking taking into account saturation of magnetic circuit is presented. Characteristics of the SZUr motor with 630 kW power, used in brown coal mining, are also given. Analyses show that motor operation can be efficiently braked in two ways: 1. by changing additional resistance in rotor circuit (e.g. using thyristor controller); 2. by changing intensity of electric current supplied to stator winding (e.g. using a rectifier). (3 refs.) (In Polish)}
journal = []
volume = {22:9/12}
journal type = {AC}
place = {Poland}
year = {1980}
month = {Sep}
}
title = {Statistical mechanical characteristics of slip-ring induction motors when direct current braking}
author = {Kedzior, W, Muchorowski, J, and Pienkowski, K}
abstractNote = {This paper evaluates methods of braking high capacity belt conveyors used in brown coal surface mines in Poland. Complications associated with belt conveyor braking, particularly when a conveyor moves down a slope, are analyzed. A method of calculating mechanical characteristics of wound-rotor induction motors during direct current braking taking into account saturation of magnetic circuit is presented. Characteristics of the SZUr motor with 630 kW power, used in brown coal mining, are also given. Analyses show that motor operation can be efficiently braked in two ways: 1. by changing additional resistance in rotor circuit (e.g. using thyristor controller); 2. by changing intensity of electric current supplied to stator winding (e.g. using a rectifier). (3 refs.) (In Polish)}
journal = []
volume = {22:9/12}
journal type = {AC}
place = {Poland}
year = {1980}
month = {Sep}
}