Hopewind Electric's low-voltage three-level air-cooled doubly-fed converter
is used in wind power generation systems with 950V/1140V doubly-fed generators.
Adopting I-type three-level topology,the system voltage level is 950V/1140V,
and the core power conversion module adopts IGBT devices.
When the generator speed changes with the wind speed , the
converter changes the rotor magnetic field by controlling the excitation of the
generator rotor, so that the frequency, phase, and amplitude of the generator
output voltage are consistent with the grid, so as to realize variable speed &
constant frequency power generation of the wind power system. By changing
the frequency, amplitude and phase of the rotor excitation current, the generator
frequency, active and reactive power can also be adjusted.
Hopewind Electric provides 950V/1140V rated voltage, 50Hz/60Hz rated frequency
of 2.5MW, 3.0MW, 3.XMW and other specifications of wind power double-fed
converters. The products include a number of patented technologies and have
completely independent Intellectual property. The converter adopts air-cooled
cooling method. According to different application environments, it can be divided
into standard type, high prototype, low temperature type, and coastal type.
Mature design: more than 8 years of three-level development and application
experience, mature supply chain, and more overlap with 690V system
Platform design: 690V system platform is adopted, and the structural layout
and the design of the incoming and outgoing lines are consistent to assist
the seamless switching of the unit design
Good power quality: the converter adopts a three-level topology scheme,
with more output levels and lower harmonic content
Reduce the loss of the converter: the voltage brings the current reduction,
and the converter heat is reduced, and the tower heat dissipation pressure is
Improve unit cost performance: solve the bottleneck of motor power design,
reduce the amount of cables inside the unit, and reduce the unit system cost
Remote monitoring and intelligent diagnosis: realize the intelligent diagnosis
of fan faults through the remote network system of the converter
theme : Doubly-fed Converter-950V/1140V-Fan Cooling