Sakthi Electrical Control

WHAT IS A FREQUENCY CONVERTER?

A frequency converter, also known as a power frequency changer, is a device that takes incoming power, normally 50 or 60 Hz and converts it to 400 Hz output power.

Standard commercial utility power is alternating current (AC) power. AC refers to the number of cycles per second (‘hertz” or Hz) that the power fluctuates, positive and negative, around a neutral datum. Two standards exist in the world, 50 hertz and 60 hertz. 50 Hz is prevalent in Europe, Asia, and Africa, while 60 Hz is the standard in most of North America and some other countries (Brazil, Saudi Arabia, South Korea) around the world.

 

There is no inherent advantage to one frequency over another frequency. But there can be significant disadvantages. Problems occur when the load being powered is sensitive to the input power frequency. For example, motors spin at a multiple of the power frequency. Thus, a 60 Hz motor will spin at 1800 or 3600 RPM. However, when 50 Hz power is applied, the RPM is 1500 or 3000 RPM. Machines tend to be speed-sensitive, so the power to run them must correspond to the design RPM intended. Thus, a typical piece of European machinery needs 50 Hz input, and if it runs in the United States, a 60-to-50 Hz converter is required to convert the available 60 Hz power to 50 Hz. The same applies vice versa to convert 50 Hz power to 60 Hz. While standard power ratings and capacities exist for frequency changers, our converters operate over a range of voltages from 100V to 600V. The most commonly specified voltages are 110V, 120V, 200V, 220V, 230V, 240V, 380V, 400V, and 480V. Because our standard and custom design capabilities can meet a range of power system needs, Georator is your supplier for frequency to voltage converters.

Details:

• Static Frequency Converter units are power converters, converting incoming AC power into DC power (rectifier stage) and then converting the DC power into the required AC frequency and voltage. Solid state frequency converters are ideal where noise, size, precision or adjustability are paramount. Solid state frequency converters are inherently quiet, which makes them ideal for office and laboratory environments. Typical noise levels are less than or equal to 65 decibels (dB). The common phase conversions are single phase to three phase and three phase to single phase.

Typical Characteristics of Sakthi Solid State Frequency Converters

• Single and three phase units available, with optional phase conversion (e.g. 3 phase to single phase, single phase to 3 phase ). 
• Suitable for use with Resistive, Capacitive, Inductive and Non-linear loads.
• Galvanic Isolation input to output. No Harmonic Distortion (EMI, EMC).
• Pure and Stable Sine wave Output.
• Sustained 300% Overload Capability.
• IGBT or MOSFET based, generating High Efficiency, Low Noise and Max. Reliability.
• Utilize PWM technology enhancing Compact Size, Light Weight.
• Equipped with Protection Circuits and Alarms.

What are some of the limitations of solid state frequency converters?

• Solid state frequency converters are not very good at starting motor loads because of the typical motor starting surge current required to start motors.  Motor loads require a significant (6 to 10 times full load amps) kick simply to start to run.  This motor starting surge, also called “locked rotor” current, is momentary, only last a few milliseconds at peak, and decaying to normal running current in roughly a second.  Unfortunately, a solid state converter doesn’t “know” that this large surge will only last milliseconds, so it shuts down to self-protect.  To run motor loads, the converter’s overload ability must be matched to the motor starting requirement, causing a significant oversizing of the converter.
• Solid state converters are also sensitive to temperature and humid environments.  In essence, they require air conditioning, and are not tolerant of severe environments, such as salt fog.  They have a typical lifetime of 10 years of continuous service.

 SAKTHI  frequency changer or frequency converter is an electronic or electromechanical device that converts alternating current (AC) of one frequency to alternating current of another frequency. The device may also change the voltage, but if it does, that is incidental to its principal purpose, since voltage conversion of alternating current is much easier to achieve than frequency conversion.

Frequency Converters, also called a Frequency Changers, convert 50Hz and 60Hz to 400Hz power.  This is done either by means of a double conversion Static Frequency Converter or by using a motor generator set called a Rotary Frequency Converter.  Frequency converters are machines that convert power from one frequency to another frequency.  Either by means of a double conversion Static Frequency Converters or by using a motor  generator set called a Rotary Frequency Converter.  In the double conversion method, the Rectifier converts AC into DC and the Inverter converts DC back into AC.  In an Motor Generator set, this is completed by either changing the rotational speed of the generator in the versions with belts & sheaves or the gear box and by means of motors and generators with a different number of poles operating to achieve the same result of producing the desired output frequency.

Additional Information:

• Item Code: SAKTHIPC10

We deal in wide range of Variable Frequency Drives. At AC Drives, we make custom designed variable frequency drives suitable for Original Equipment Manufacturers (OEMs).

Advantages:

• Inputs/outputs as required,
• Application specific control functions,
• Advanced user interface features,
• Power factor correction,
• Conformance to mandatory standards,
• Adaptability to working environment,
• Desired size & shape
• Economical

 
415V, Three phase drive is available now. Download the basic specifications. Booster pump drive has CSA certification,

BLDC motor drive for driving two motors from a single module in electronic gearing / master-slave for applications in winding machines and HVAC,

AC Drives for single phase PSC and three phase pumps up to 1kW,

 
Drives that work from 90V to 260V AC input for universal usage, Pumps & Compressors, Fans, Elevator doors, Textile winders, Tape winders, Treadmills, Whole body vibrating machines, Milk Separators, Polishing & Grinding machines.