Power inverter analysis present situation and the future direction of technology

Frequency conversion power inverter is based on the rapid development of power inverter technology innovation, the development of power inverter devices and materials and devices based on manufacturing technology level, especially for high voltage large capacity insulated gate bipolar transistor IGBT, integrated gate power inverter thyristor pipelayer IGCT devices of successful development, makes the high power inverter frequency conversion technology development rapidly, more perfect performance.

The new inverter brand on the market at present is various, each has his strong point.

Through the analysis found that the frequency power inverter have a lot in common.

Down in the face of the current situation of the frequency power converter and its technological development trend of the future is analyzed.

1.Power converter market situation:

50% ~ 60% of the electricity used in ac motor in our country, the capacity is above 3 kw, voltage rating is commonly 3 ~ 10 kv motor accounted for 40% ~ 50% of total installed capacity of the motor.

Because of the industrialization of medium voltage frequency power converter technology in China is still not formed, lagging behind the developed countries abroad, so this part of the working condition of motor in the load change, lack of economic and reliable means of speed control, waste a lot of energy every day, so domestic medium-voltage high-power inverter market potential huge.

The state planning commission is expected in the next fifteen years, our country frequency converter aggregate demand of investment in 50 billion yuan of above, of which 60% ~ 70% of medium voltage high power inverter.

High voltage inverter in China market has its particularity, including: solar inverters is very strong, mainly in the metallurgical, electricity, water, oil, chemical industry, coal, etc.

Oil, coal and other energy industries in the industrial electricity solar inverters consumption accounted for 22.34%; Chemical solar inverters accounted for 14.73%; Metallurgical industry accounted for 14.18%; Mechanical building materials (10.96%); Water accounted for 10.53%.

(2) industry in the whole country at present, only a handful of firms high-voltage motor USES the way of speed adjustment, the market gap.

(3) high voltage solar inverters equipment investment, mainly used for energy saving and improve production process.

Whether the user to buy such equipment much relationship with the government's policy guidance.