About Train VVVF inverter output voltage characteristics
The system is bi-mode (electric and diesel) and multi-tension (1500 V DC, 20kV AC 50Hz-60Hz, 25 kV AC 50Hz). Therefore, it is able to run on both various electrified tracks and non-electrified sections.
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6 FAQs about [Train VVVF inverter output voltage characteristics]
What is a VVVF traction inverter system?
The newly manufactured series are to replace 8000 series vehicles and other types. As shown in Fig. 3, as the main circuit system, one variable voltage variable frequency (VVVF) traction inverter system controls four main motors. Figure 4 shows the appearance of a VVVF traction inverter system.
When did electric trains start using VVVF inverters?
IT is about 30 years since electric trains using VVVF (variable voltage variable frequency) inverter control first appeared in Japan. Since then, VVVF inverters for rolling stock (referred to below as “inverters”) have undergone a steady stream of improvements.
What is a variable voltage variable frequency (VVVF) Inverter?
This is done by means of a type of inverter known as a Variable Voltage, Variable Frequency (VVVF) inverter. This inverter feeds power to output devices that act as switches.
What does a train inverter do?
These inverters convert incoming DC power to AC power as well as control the amount of power (voltage and frequency) being supplied in accordance with the train’s speed, etc. In addition, these inverters are also capable of regenerating power from the motors as the train decelerates.
What is VVVF (variable voltage variable frequency) inverter for rolling stock?
This VVVF (variable voltage variable frequency) inverter for rolling stock uses new technology to achieve reduced size and light weight. table 1. Development Concept and Technologies Used
What is a traction inverter system?
Assuming systems for conventional lines in Japan, one traction inverter system drives four induction motors of up to 220 kW connected in parallel as the specifications. A traction inverter system consists of a line breaker circuit, power unit, and gate control unit. The LV100 SiC power module enables the cooler to be compact and the