Perfect Harmonics High Voltage IGBT Inverter

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Perfect Harmonics High Voltage IGBT Inverter

A foreign company has used a new high-voltage frequency conversion technology to produce a perfect harmonic-free high-voltage frequency converter (PERFECTHARMONY) with a power of 315kW to 10,000kW. It can achieve direct 3kV or 6kV high-voltage output without an additional output transformer; it is the first company to use advanced IGBT switching devices in high-voltage frequency converters; it has achieved perfect input and output waveforms, and can meet the strict requirements of power supply departments in various countries on harmonics without adding any filters; the input power factor reaches more than 0?95; the overall efficiency (including input isolation transformation) is as high as 97%. The reason for achieving such high indicators is that three new high-voltage frequency conversion technologies are used: first, the direct series superposition of single-phase bridge SPWM inverters with independent power supply is used in the output inverter part; second, the multi-phase multiple superposition rectification technology is used in the input rectification part; and third, the power unit modularization technology is used in the structure.