Fairchild Technology Shenzhen Co., Ltd. is a professional R & D drive product development, manufacturing and marketing of high-tech enterprises. The company is a group of more than ten years immersed in the drive industry, a senior R & D personnel and sales engineering staff initiated due to the difficulties experienced domestic inverter fortunate and turns, since the inception of the company determined to create a "high quality, high stability" domestic inverter brands. The company developed the FG series drives are widely used in municipal, building materials, plastics, oil, machinery, chemical, metallurgy, textile, printing, machine tools, mining and other fields of various motor load, as well as in the field of energy saving automation and control provided professional, the perfect solution. Features (1) high-performance DSP motor control ASIC (2) optimization of space voltage vector (SVPWM) modulation technique (3) Easy flux vector algorithm, strong low-frequency output torque; (4) excellent deadband compensation technology to achieve the perfect current waveform; (6) improve the IGBT drive technology and its multiple reliable protection technology. (7) super instantaneous overcurrent suppression, fast current limiting capability. (8) The complete drive protection features to ensure reliable operation of the inverter. (9) Excellent electromagnetic compatibility (EMC) design techniques Fairchild each power converter products feature a power: 4KW-5.5KW, brake unit: built-in, Dimensions: 220 * 150 * 180, the installation forms: Wall 2, Power: 7.5KW-15KW, brake unit: built-in, Dimensions: 320 * 205 * 195 Installation: Wall-mounted 3, power: 18.5KW-30KW, brake unit: External Dimensions: 450 * 282 * 229 Installation: Wall-4, Power: 37KW-55KW, brake unit: External Dimensions: 320 * 205 * 195 Installation: Wall-5, power: 75KW-110KW, brake unit: External Dimensions: 755 * 460 * 330 Installation: Wall-6, power: 132KW-185KW, brake unit: External Dimensions: 1490 * 490 * 391, the installation forms: Cabinet 7, power: 200KW-315KW, brake unit: External Dimensions: 1670 * 750 * 402, the installation forms: Cabinet Fairchild technology to "quality first, honesty, mutual win-win" philosophy, careful management, make every effort to provide reassure customers products and services to maximize the creation of value for customers. We will cherish every opportunity to cooperate with you and look forward to your consultation and cooperation, let us work together to create a better future! The company is the manufacturer, such as the need Fairchild inverter series, machine type, fan and pump type, frequency machine, water type, stop delay, track type and stone cutters and other models, you can contact me direct the Secretary customization, please consult the discussion! Fairchild Technology Co., Ltd. Shenzhen welcome your calls, enthusiasm for your service! Contact QQ: 2627328107 Tel: 15219499585 company's official website www.feizhao.net micro-channel enterprise public account: Fairchild Drive following is the promotion side of the inverter output waveform article in the inverter output circuit, the output voltage and current harmonics are. For PWM inverter control, as long as the voltage inverter, no matter what kind of PWM control, the output voltage waveform is a square wave, which is the level of harmonic frequency inverter modulation frequency. The current waveform is approximately sinusoidal with a burr, as shown in Fig. Visible, the inverter output waveform distortion will cause great harm to the motor. Third, the harmonics of the motor main hazards are: additional heat caused by the motor, resulting in an additional temperature rise of the motor; increased repetitive peak voltage of the motor, damage the insulation of the motor, reducing the life of the motor; produce torque ripple; increase the noise. Practice, many unexplained failures of the motor are caused due to the harmonic. Improve the inverter output waveform can be sinusoidal filter, the output waveform correction to perfect sine wave. Fourth, the inverter harmonic interference elimination approach