Based on the AC motor controlling technology for rolling stacks, VCTech manufacture the running inverter controllers for electric vehicles as well as for golf cars including the nation's first 5-seater Automated guided vehicle system (AGV). . We supply auxiliary power supply systems that are compact, lightweight, highly efficient and have high redundancy. VCTech has been participating. . This section provides an overview for auxiliary power supplies as well as their applications and principles. Here are the top-ranked auxiliary power supply companies as of December, 2025:. . Passenger comfort and information are becoming increasingly important in modern mobility. This also increases the importance of on-board power supply, of railroad vehicles, for example for air conditioning and ventilation or sockets for charging laptops or cell phones. MoComp auxiliary converters. . Efficient and high-performance inverters for electric vehicle (EV) auxiliary drives Infineon offers highly efficient and flexible inverter solutions for auxiliary systems in electric vehicles (EV). Our full automotive-qualified product portfolio supports a wide range of applications that are. . Wabtec has developed a set of proven power modules that enable Transit providers to meet the numerous technical challenges of integrating and maintaining an auxiliary power system. Our solutions help reduce time to market without compromising flexibility. Today's trains are equipped with an. .