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Frequency converter use rectifiers to convert ac power line electricity into direct current. Then inductor-capacitor filters smooth its waveforms and pulse-width-modulation inverters turn it into shaped ac power with a frequency of 2 to 12 Hz. This output is used to drive motors for constant torque or (with the help of encoders) to control motor speed. frequency converters are proliferating, as they save substantial amounts of energy during motor operation âÛ" an objective of increasing importance. Some frequency converters have built-in ac and dc brake functions to help transform kinetic energy from the application into braking power.
- Business type: manufacturer, wholesale supplier, exporter, distributor, electric utility
- Product types: DC to DC power converters, energy efficient appliances, power conversion equipment, wind energy system components (small), air cooling system components, home automation.
- Service types: design, installation, engineering, project development services, maintenance and repair services
- Address: Building 7 xinxing fuyong baoan, Shenzhen, Guangdong China 518003
- Telephone: +8675533690573
- Web Site: http://www.frequencyinverter.org/
- E-mail: Send Email to Frequency Converter
Greencisco Industrial Co. Ltd. is a leading manufacturer of UPS, solar inverter, solar power system, solar batteries, nickel cadmium batteries, nickel iron solar battery, battery charger, -48V telecom rectifier system, Telecom DC-DC converter, frequency converter, stabilizer, MPPT/PWM solar controllers. www. greencisco. com;;/Greenciscosimon
- Business type: manufacturer
- Product types: Modular ups, outdoor ups, DC ups for POE networks, 48V modular rectifier system, stabilizers, frequency converters, static transfer switch, battery chargers, solar street light, solar inverter, gel battery, AGM battery, OPzV battery, nickel cadmium battery, silver zinc battery for aircraft, missile, ect. .
- Service types: Manufacturer
- Address: B307, Cuiyuan Building, Songyuan New Village, Hengkeng Industrial Area, Liaobu Town, Dongguan, Guangdong China 523413
- Telephone: 8613642803908
- FAX: 8676983223595
- Web Site: http://www.greencisco.com;https://twitter.com/Greenciscosimon
- E-mail: Send Email to Greencisco Industrial Co., Ltd.
Established in 2000, based in Shanghai, China, ROY SOLAR is the specialist of solar electric power for the areas where there are electricity problem, but with good sunlight power, such as Africa, South America, South-east Asia, etc. Products range: from solar charge controller LD2420C, LD2430S, LD4830S, CM3024Z, CM3048, CM5024Z, CM5048, SL1024 to Total Solar Power System Solution.
- Business type: manufacturer, exporter, system design, system installation
- Product types: solar street lights, solar electric power systems, DC To AC Power Inverters, solar electric charge controllers (PV charge controllers), battery, photovoltaic modules (solar PV panels, PV modules), solar pumping system, wind turbine, battery charge controllers, solar charge controller LD2420C, LD2430S, LD4830S, CM3024Z, CM3048, CM5024Z, CM5048, SL10....
- Address: 101-47-175, Hong Song Road, Min Hang District, Shanghai, China 201103
- Telephone: 86-13917567367
- FAX: 86-21-67626942
- Web Site: http://www.roysolar.com
- E-mail: Send Email to Roy Solar Co., Ltd.
Variable speed drives are ONLY for 3 phase motors, any method to speed control an induction motor. Variable speed drive with ONLY single phase input can drive capacitor start/run single phase motors. Variable speed drive operating from single phase have output voltage on each phase equal to input voltage. Higher capacity single phase motors with separate high torque/high current starting winding operated by centrifugal switch can not be used with variable speed drive. However a triac speed controller may work, as this could duty cycle the AC sine wave form. Try an off the shelf light dimmer and see if this can control the desired speed range of the fans. If this works, then some circuit research/lab work could produce a circuit that takes 0...
- Business type: manufacturer, wholesale supplier, exporter
- Product types: home automation, power conversion equipment, power conditioning equipment components, wind power plants, water pumps, energy efficient appliances.
- Service types: consulting, installation, engineering
- Address: No. 2 Xuwu Village Xixiang baishi, Bao'an District, Shenzhen, Guangdong China 518000
- Telephone: +8675528480241
- Web Site: http://www.vsdrive.com
- E-mail: Send Email to Variable Speed Drives
Archnet Technology Ltd
- Business type: manufacturer
- Product types: PLC modems, AMR system,home automation, meters and measuring equipment.
- Address: 1010,200 Connaught Rd, HK Hong Kong, China 852
- Telephone: 852-28584999
- FAX: 852-25375462
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