The invention discloses a train and a traction transmission system and a control method thereof, which are applied to the technical field of rail transit and comprise a traction transmission system main circuit, a controller and an active voltage regulating circuit arranged on a direct current bus. The controller is used for determining a voltage reference value of the target capacitor, taking the voltage reference value as a target voltage of the target capacitor, performing feedback control and outputting a first control quantity; determining a current reference value of a target inductor based on the current traction network voltage frequency, taking the current reference value as a current target of the target inductor, performing feedback control, and outputting a second control quantity; and superposing the first control quantity and the second control quantity and modulating corresponding PWM (Pulse Width Modulation) pulses to control the on-off of corresponding switching tubes in the active voltage regulation circuit, so that the voltage of the target capacitor follows the voltage reference value, and the current of the target inductor follows the current reference value. By applying the scheme of the invention, the secondary pulsation of the DC bus voltage can be effectively suppressed under different power supply frequencies, and the reliability of the system is ensured.
本申请公开了一种列车及其牵引传动系统和控制方法,应用于轨道交通技术领域,包括:牵引传动系统主电路,控制器,以及设置在直流母线上的有源调压电路。控制器用于确定出目标电容的电压参考值,将其作为目标电容的目标电压并进行反馈控制,输出第一控制量;基于当前的牵引网电压频率确定出目标电感的电流参考值,将其作为目标电感的电流目标并进行反馈控制,输出第二控制量;叠加第一和第二控制量并调制出相应的PWM脉冲以控制有源调压电路中的相应开关管的通断,使得目标电容的电压跟随电压参考值,目标电感的电流跟随电流参考值。应用本申请的方案,在不同供电频率下都能有效抑制直流母线电压的二次脉动,且保障了系统的可靠性。
Train and traction transmission system and control method thereof
一种列车及其牵引传动系统和控制方法
2023-12-05
Patent
Electronic Resource
Chinese
IPC: | B61C Lokomotiven , LOCOMOTIVES / H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung |
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