METHOD OF SPECTRAL ANALYSIS OF TRACTION CURRENT OF AC ELECTRIC LOCOMOTIVES

An improved method for spectral analysis of traction current an Alternating Current (AC) electric locomotive is considered in the article. A new considers change voltage catenary system as a non-deterministic, non-ergodic and non-Gaussian process. It has been established that higher harmonics have significant negative effect on operation non-traction railway consumers electricity. In addition, locomotives operating same feeder zone mutual influence each other. Electric transport source strongly distorts shape sinusoidal system, which are caused by components drive circuit. These arise circuit due to nonlinearity current-voltage characteristics electronic devices locomotive, example, contact rectifier, capacitor motors. Reactive power compensators used eliminate harmonic system. Traditionally, such systems performed using Fourier methods. However, determination constructing control reactive compensator possible only if process variation deterministic or ergodic Gaussian Otherwise, application transform methods will be incorrect. factors affect changes showed this significantly different from Such include following: mode locomotives; number total capacity one zone; passing through zones; instability collection current. Thus, case under consideration, incorrect This affects quality compensation current, some cases, unstable active part compensator. Proposed scientific approach based Levinson–Durbin linear prediction algorithm. On hand, allows adapting parameters other taking into account modes rail vehicle with compensation. The construction algorithm simplifies thensynchronization scheme circuits AC locomotive. comparison traditional analysis, Fast Transform (FFT), method, algorithm, proposed authors, high efficiency latter.