Power Factor Increase of Electric Drives of Railway Shunting Winches

Purpose. The main purpose of the work is to develop recommendations for increasing power factor electric drives railway shunting winches, taking into account peculiarities technological process at loading and unloading sites. To achieve this purpose, following tasks were set: choose a rational way increase drive winch, process, simplicity reliability electrical circuit; methodology (calculation algorithm) determine elements circuit, which are designed factor; conduct research numerical technical characteristics these elements, using developed methodology; assess some models winches; formulate on possible modernization winches. Methodology. An algorithm calculating reactive an unregulated cosine capacitor, has be permanently connected terminals three-phase induction motor winch in order factor, developed. Findings. Studies have shown that proposed method gives significant different values load motor, while ensuring scheme its reliability. Originality. For first time, technology cars, required proposed. formula determining depending ratio unloaded loaded cars move with Practical value. results practical value because obtained coefficients winches capacitors can used as primary information deciding whether it advisable modernize by connecting motor.