The invention relates to a charger parallel current sharing control method and a control system thereof, and belongs to the technical field of motor train unit power supply, and the charger parallel current sharing control method comprises the following steps: obtaining the output voltage and the output current of each high-frequency inversion module of a charger; performing PI control calculation on each output voltage and a preset output voltage to obtain a first value of a phase shift angle corresponding to each high-frequency inversion module; according to the output current of each high-frequency inversion module, adopting Bang-Bang control calculation to obtain a second numerical value of a phase shift angle corresponding to each high-frequency inversion module; superposing the first numerical value of the phase shift angle and the second numerical value of the phase shift angle to obtain a superposed value of the phase shift angle of each high-frequency inversion module; and adjusting the output voltage and the output current of each high-frequency inversion module according to the superposition value of the phase shift angle. According to the charger parallel current sharing digital control system provided by the invention, current sharing among a plurality of high-frequency inversion modules is realized by adopting a mode of combining a voltage loop and current sharing compensation.
本发明涉及一种充电机并联均流控制方法及其控制系统,属于动车组供电技术领域,该充电机并联均流控制方法包括以下步骤:获取充电机各个高频逆变模块的输出电压和输出电流;将各输出电压与预设的输出电压采用PI控制计算得到各高频逆变模块对应的移相角的第一数值;根据各高频逆变模块的输出电流采用Bang‑Bang控制计算得到各高频逆变模块对应的移相角的第二数值;将移相角的第一数值与移相角的第二数值叠加,得到各高频逆变模块的移相角的叠加值;根据移相角的叠加值,对各个高频逆变模块的输出电压、输出电流进行调节。本发明提供的充电机并联均流数字控制系统采用电压环与均流补偿相结合的方式实现多个高频逆变模块之间的均流。
Charger parallel current sharing control method and control system thereof
充电机并联均流控制方法及其控制系统
2023-11-10
Patent
Electronic Resource
Chinese
IPC: | H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / 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 |
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