Frequency Converter

The company, with a complete system for R&D, design, manufacturing, marketing,
and maintenance service, focuses on the development of the electrical power
transmission equipment in the industrial automation area, including integrated
VFD motor, special converter, special high-performance VFD motor, power control
equipment, and power supply products. The asynchronous integrated VFD motor and
the permanent magnetic integrated synchronous VFD motor, as the core products
of CCS, organically integrate the frequency converter and the motor, which can
replace the separated transmission type of “converter+motor”, obtaining the
market-leading position in the high-end transmission equipment of minging
industries of coal and oil&gas.

The frequency converter is also called voltage and frequency converter. CCS has
mastered the most advanced frequency conversion speed regulation technology. We
can provide customers with high ingress protection converter, high ingress
protection transformation converter, and explosion-proof variable frequency
converters, which are widely used in special environments such as oil and gas,
chemical industry, and coal mines. The VFD frequency cRonverter has the
characteristics of high reliability, high protection, and high efficiency, and
meets the needs of customized frequency converters.

Frequency Converter Application
1. Voltage and Frequency Converter for Cooling Tower: The use of a voltage and
frequency converter on a cooling tower fan is the most useful means to control
leaving water temperature on critical process water applications. Frequency
Converter can help save energy and reduce the noise of cooling tower in non-
peak periods and benefit the life of the frequency converter components with
fewer starts, smoother starts, and built-in motor diagnostics.

2. Voltage and Frequency Converter in Mining Applications: Voltage and
frequency converter are now finding wide use in mining applications.

3. Voltage and Frequency Converter for Water Pumps: The installation of voltage
and frequency converter on water pumps can be an effective energy saving
measurement. Voltage and frequency converter can be installed on all water
pumps, including those associated with HVAC systems.

Benefits of Using Frequency Converters
1. Speed regulation and saving energy, which can save energy by lowering the
motor speed when it is not necessary to run at full speed.
2. Soft start can be used to prolong the service life of the voltage and
frequency converter.
3. The motor control system is simplified.
4. Reduce mechanical wear and loss.

How does A Frequency Converter Work?
The electric frequency converter mainly adopts AC-DC-AC mode, which first
converts the power frequency AC power supply into DC power supply through the
rectifier, and then converts the DC power supply into AC power supply with
controllable frequency and voltage to supply the motor. The voltage and
frequency converter converts a basic fixed-frequency, fixed voltage sine-wave
power (line power) to a variable-frequency, variable-voltage output used to
control speed of induction motors.

Frequency Converter VS VFD
1.Power Supply: VFD is composed of AC-DC- AC (modulation wave) circuits.
Voltage and frequency change proportionally at the same time and can not be
adjusted separately, which does not meet the requirements of the AC power
supply. In principle, it can not be used for power supply, and VFD is generally
used for speed regulation of three phase asynchronous motor. The whole circuit
of frequency converter consists of AC-DC-AC-Filter Circuit, so the output
voltage and current waveform are pure sinusoidal, which is very close to the
ideal AC power supply. Voltage and frequency converter can output the power
grid voltage and frequency of any country in the world.

2.Load Test: VFD(variable frequency drive motor) can't use in load tests
because of high vibration and electromagnetic noise, large temperature rise,
and the instruments can't work normally. So the voltage to frequency converter
that can provide a pure sine wave output becomes indispensable power equipment
in the laboratory.

3. Converter: A VFD is not a typical converter though it has conversions inside
it. A voltage frequency converter would typically convert a DC signal to an AC
signal.

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