Dalgakiran Compressor Ukraine is a distributor and certified service partner of Hiconics Technology CO. Ltd in Ukraine, is engaged in the supply and implementation of high-voltage frequency converters of the HIVERT series. High-voltage frequency converters (hereinafter referred to as HVFCs) are designed for soft start/stop and frequency regulation of three-phase high-voltage synchronous and induction motors with power from 150 to 20,000 kW with voltage of 3.3, 6, 10 kV.
energy saving – up to 50% energy savings in ventilation systems, water and heat supply systems;
Expanding the capabilities of technological equipment;
speed control in previously unregulated technological processes;
synchronous control of several motors from one converter;
The proposed HLPs meet modern technical requirements and have the following characteristic features:
conversion is carried out according to the AC-DC-AC formula with one transformer;
the inverter scheme is instantaneous with pulse width modulation (PWM), depending on the voltage and motor type, there are from 3 to 6 single-phase inverters per phase;
power units are controlled and monitored via fiber optic cable;
The circuitry of the VPL fully complies with the electromagnetic compatibility (EMC) indicators of GOST 13109-97. Electrical energy. Electromagnetic compatibility of technical means. Standards of quality of electric energy in general-purpose power supply systems), and also complies with international standards IEC 868, IEC 1000-3-2, IEC 1000-3-3, IEC 1000-4-1 and publications IEC 1000-2-1, IEC 1000-2-2 in terms of levels of electromagnetic compatibility in power supply systems and methods of measuring electromagnetic interference. HPV does not require an input and output electrical filter;
visualization of the HPV operation is made in the form of an ergonomic touchscreen graphic terminal with a diagonal of 10″, the menu is in Russian.
The structure and principle of HPV
The HPV is structurally a cascade converter consisting of single-phase converters connected in series to form a group. Each group is connected to a common point, thereby forming a three-phase high voltage converter. The circuitry of each single-phase converter is a typical PWM inverter with a DC link, differing only in the power of power semiconductor devices (SPDs), diode and transistor (IGBT) potential-free modules. This circuitry significantly reduces the level of pulsations at the output of the SPP and maximizes the output voltage/current waveform to a sinusoidal one, ensuring reliable and stable operation of the converter with the motor.
The R.S.T. input circuits of the power units are connected to the secondary windings of a three-phase power transformer. The unit is controlled and monitored via fiber optic cable. In case of failure of one of the units, the inverter is optionally equipped with a bypass function. When the bypass is enabled, the rated output voltage of the frequency converter is reduced. If the HPI operates at a frequency of at least 40 Hz, it automatically increases the output voltage of the operating power units to optimize the uninterrupted operation of the HPI.
Advantages.
does not require an input and output EMC filter;
whether the motor does not violate the operating conditions and minimizes its induction heating;
have no restrictions on the length of the motor cable;
no negative impact of the impulse voltage/current on the insulation of the motor and its supply cable (dU/dt effect) and, as a result, preservation of operating conditions.
The design of the HPV
Structurally, the VPL consists of cabinets with equipment placed in them:
Transformer cabinet with temperature control unit;
Inverter cabinet;
Control cabinet;
Soft start cabinet (for surge protectors with current above 600A or optionally for lower power)
Output current-limiting choke cabinet (optional). It is installed when the length of the motor cable is more than 500 m and/or when the motor is switched continuously to the mains and back
Bypass (bypass) high-voltage cell (optional).
Control system UPS and bypass cells (optional).
Liquid cooling system cabinet and chiller (for liquid-cooled HPC).
The transformer cabinet has a built-in dry high-voltage transformer with a forced cooling system and temperature indicator. The inverter cabinet contains the inverter power units. The soft start cabinet is a rheostat starter that is connected through an additional secondary three-phase winding of 0.4kV of the main power transformer.
Parameter name
Value
Power supply voltage, kV
3-phase 3.3 / 6 / 6.6 / 10 (-20 … + 5% or ± 10%)
Input frequency, Hz
45-65
Rated output voltage, kV
3,3; 6; 10
Power of the drive motor, kW
315-20000
Output current, A
31-1450
Formation of output voltage/current
Sinusoidal PWM
Output frequency, Hz
0-50 (80 – optional)
Acceleration/deceleration time, s
5-6000
Power factor, not less than
0,96
Efficiency, not less than
96%
Overload capacity by current
120% no more than 120 sec; 150% no more than 1 sec
Analog input / output, (4-20mA or 0-10V), pcs.
2/2 (more on request)
Discrete input/output
12/15 (more on request)
Communication interface with the control system
Isolated RS-485 Mod Bus RTU (base),
Profibus DP (optional), Ethernet (optional)
Number of single-phase converters per phase, pcs.
3/5/6/9
Power supply for own needs, V AC
3х380
Cooling system
Depending on the power, forced air or liquid cooling
Control and monitoring of parameters
10″ touch screen (Touch Screen)
Degree of protective shell and operating temperature
IP31; -5 … + 45ºС
Height above sea level max.
no more than 1000 m **
Service depending on the capacity
one-sided or two-sided
Ambient humidity
90% without dew point
* Up to -20% – with preservation of the efficiency of the VLP, at a load of no more than 80%.
** At altitudes above 1000 m, the UPS can operate with reduced rated power.
Dalgakiran Compressor Ukraine LLC is the official distributor and service partner of Hiconics in Ukraine and guarantees that the products meet the manufacturer’s declared specifications. In addition, it provides a full range of services for the selection, installation and launch of frequency converters at enterprises of any type and field of activity. Engineers and specialists of Dalgakiran Compressor Ukraine develop all the necessary documentation and organize work on equipping or re-equipping the company’s production facilities in accordance with modern energy saving and productivity standards.
Our advantages.
Implementation of a turnkey project – audit, supply, installation and commissioning of VFDs, personnel training;
a wide range of Hiconics frequency converters with the ability to customize to customer requirements;
professional maintenance 24/7/365 in our own service centers;
low prices for equipment due to direct deliveries from the manufacturer’s factory.
Dalgakiran Compressor Ukraine offers original Hiconics units with a range of additional services and favorable terms of cooperation.
Types and applications of frequency converters
Frequency converters, like compressor and generator equipment, come in different types and differ in their purpose. Functions of converters:
Motor speed control.
Increase energy efficiency.
Ensure precise control of pressure, temperature, or power.
Reduce wear and tear and increase equipment service life.
Improving the safety of electric motors.
Reduced energy consumption and operating costs.
Converters can be water- or air-cooled and have vector control. Before you buy a frequency converter, you need to make sure that it meets your expectations and has the necessary characteristics.
How to choose a frequency converter
When purchasing a frequency converter, pay attention to the power it operates with and the type of AC power it uses. It also helps to choose a model with overload protection and other additional features. Before buying a frequency converter, it is better to consult with the employees ofDalgakiran Compressor Ukraine. They will tell you the option that will be most relevant for your company.
Full cycle of energy solutions implementation
Dalgakiran Compressor Ukraine LLC provides a full range of work on creating autonomous and backup power supply systems.
We support the client at all stages – from the development of project documentation and construction and installation works to the issuance of permits and
commissioning of equipment.
Quality Assurance – International Certification
Our quality management system has successfully passed the international certification ISO 9001:2015, confirming compliance with the highest global standards in the organization of processes, production and service.
Qualified service — always nearby
The engineers of the Dalgakiran Ukraine service department undergo regular training and have official certification in the maintenance and repair of diesel engines, which are key components of generator sets.
This allows us to guarantee stable operation of the equipment even under conditions of intensive operation.
A comprehensive approach
We do not only supply compressors — Dalgakiran implements a full technological cycle on a turnkey basis. Our engineers analyze the customer’s needs, select optimal solutions, supply and launch all the necessary equipment. Both complete and phased re-equipment of production to energy-efficient and environmentally friendly technologies is possible.
Compressor design and operating principle
Compressors are divided into dynamic and positive displacement: the former use moving elements to change pressure, the latter use a piston or rotor to compress gas.
The most popular types are piston and screw. Piston are universal, work due to the reciprocating motion of the piston.
Screw are suitable for intensive use, compress air thanks to two rotating screws.
Compressor Power Overview
Compressor power is measured in watts, kilowatts, or horsepower. It indicates the device’s ability to create pressure and volume of air or gas per unit of time. More power means more pressure.
To buy an air compressor with powerful characteristics, we recommend paying special attention to this parameter.
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