Category
- Products
-
- Wiki
- Contact us
Inverter manufacturers
sales@inverters.cn
1) Reliability of components: LV is
better than MV. Mature product is better than the immature. For the same
component, the better can be chosen according to the brand and class.
2) Reliability of main circuit structure: for the requirement of reducing waste of transmitting power, most big capacity motors are medium voltage motor. Voltage class is most 6kV and 10kV.
There are several modes for inverter to output medium voltage. For high-high mode, the reliability of power cells seriers-connecting is better than direct-connecting of components. Medium-low mode or medium-low-medium mode is only temporary solution in development and they should disappear in market. Some experts believe motors of 1.7 kV, 2.3 kV, 3.3 kV, 4.16 kV should be researched or change connecting mode of motor coil and add a transformer ahead of inverter to match inverter, which acts in a procrustean way.
3) Reliability during operation: power plant has following requirements for inverter to ensure generator units safefy: continue derating operation with several cells broken; can be transferred to direct on line state when inverter is broken; inverter does not stop during instant power-fault; equip UPS for controller; power source of 380V fan is supplied by inverter.
2) Reliability of main circuit structure: for the requirement of reducing waste of transmitting power, most big capacity motors are medium voltage motor. Voltage class is most 6kV and 10kV.
There are several modes for inverter to output medium voltage. For high-high mode, the reliability of power cells seriers-connecting is better than direct-connecting of components. Medium-low mode or medium-low-medium mode is only temporary solution in development and they should disappear in market. Some experts believe motors of 1.7 kV, 2.3 kV, 3.3 kV, 4.16 kV should be researched or change connecting mode of motor coil and add a transformer ahead of inverter to match inverter, which acts in a procrustean way.
3) Reliability during operation: power plant has following requirements for inverter to ensure generator units safefy: continue derating operation with several cells broken; can be transferred to direct on line state when inverter is broken; inverter does not stop during instant power-fault; equip UPS for controller; power source of 380V fan is supplied by inverter.
Tags: inverter, Medium voltage inverter