Customized Static Frequency Converters for Stable Power Solutions

XINYUHUA Static Frequency Converter

XINYUHUA is a global manufacturer which specialize in designing and manufacturing the frequency converter. The products are with high reliability, result from the most advanced technique of the aerospace and the military. Max. Capacity:10000kva.

1.Development Background

Because all the world is not at the same frequency, our Static Frequency Converter technology has been developed to bridge the gap in today’s industry environments where equipments has different voltages and frequencies.It provides the economical solution for converting power from 60Hz and 50Hz frequencies.The ships mostly use the electricity 440/690Vac .60Hz,but government grid is 400Vac/50Hz, so it can't be used directly. In the past, it is not only with the fuel consumption, noise, but also with the poor quality electricity output to adopt the rotary frequency converter . 60Hz Static Frequency Converter with advanced SPWM converter technology.Compared with Diesel Generator, it not only save 30% costs, but also protects environment and output pure quality electricity.

2.Product Overview

XINYUHUA series Static Frequency Converter, with IGBT converter technology and digital processing,transform the voltage 400V / 50Hz three-phase into 440V ~ 480V/60Hz. It widely used in the ships, ship building,the garage, the platform and the wharf which has to change 50hz industrial electricity to 60hz high quality electricity.

XINYUHUA series Static Frequency Converter adopts Canada high performance converter technology. The PCB circuit board uses the coating curing process and the output transformer uses the overall vacuum impregnation insulating paint and spraying high temperature protective paint processing,which has the high insulation level and protective ability. The moisture proof and dust proof are IP54. The cabinet body uses spray treatment,so the protection grade reaches IP22. The case where to install air conditioning can adopt fully enclosed chassis, the protection grade can be IP54,which in full compliance with Classification Society CCS marine product certification standards.

Key features and flexibility

High system availability through advanced power module redundancy

Capacity to provide output immunity to input disturbances (for voltage sags and frequency shifts)

The unity power factor rectifier with a THD of <3% provides lower harmonics

Aligned to inflexible space constraints 

Minimal operating and maintenance costs

Protects sensitive and expensive loads

Clean sine wave output voltage

Unity power factor, sine wave, active rectifier design

Modular design giving high reliability and short repair times

Fully isolated AC connection using an output transformer

Wide range of voltages available, 50Hz and 60Hz

Small footprint design

Internal web server and Mod-bus TCP allows remote monitoring

Output cable voltage drop compensation

Seamless generator change over option (synchronization)

Generator emulation and load sharing

Typical applications

50 to 60Hz or 60 to 50Hz industrial applications

Dockside converter allows generators to be turned off while at port to save fuel and eliminate pollution

Replacement of motor generator sets

As a clean power supply to isolate an unstable grid from a critical load

3.XINYUHUA Static Frequency Converter modules structure:

XINYUHUA Static Frequency Converter modules contains IGBT, SMPS, radiator, electrolysis, capacitance, driver board, copper plate etc. The modules adopts IGBT converter technology, with the advantage of high reliability, small capacity, large making material savings, light weight, move easily. In the design of the structure, it gets the switch power and the module M57962AL together, that can save more space and take more strong ability. It will reduce 50% cost than similar products produced by other countries. It enhances system reliability, and  more evenly distributed, more compact structure, elegant and beautiful.

A.High reliability:

The main components uses original German Infineon IGBT converter module and the drive protection uses original Infineon.  Perfect drive ensure all the system reliable operation .

B.Fast dynamic response (patent technology):

Double closed-loop feedback circuit, inner loop current ensure nonlinear load waveform non-distortion; the outer loop voltage drop is less than 1% when sudden load pressure. The reaction speed is less than 2ms.

C.Good human-computer interface,  high measuring accuracy:

Voltage, current, frequency, power and power factor four window measuring display. We use the well-known manufacturers of meter and the precision grade 0.5.

D.Strong overload capacity:

Power device application is reasonable. It can withstand 2 times the rated current impact, and will not cause voltage drop.

E.Excellent stability:

Frequency stability is ≤ 0.01%, the output frequency is made by quartz oscillator shocks produce, so it is very stable, precise frequency.

F.Full digital control:

Using AVR single chip microcomputer as the central control unit. The powerful computing capability of most traditional hardware control is replaced by software, the status display at a glance.

4.Static Frequency Converter using DSP control technology with intelligent and automation:

A with 7 inch LCD touch screen, can monitor and display the Static Frequency Converter operation state, parameter, generator electricity, error type .

B.using Modbus communication protocol, matching the PC monitoring software, can realize remote monitoring by computer.

(can be real-time remote monitoring the converter start and stop, display the frequency converter operation state, parameter, generator electricity, error type by computer) 

Modbus has the following characteristics:

(1) standard, open, free, users can use Modbus protocol safely, do not need to pay a licensefee, will not infringe the intellectual property rights.

(2) the Modbus can support a variety of electrical interfaces, such as RS-232, RS-485 etc, also can be transmitted in a variety of media, such as twisted pair, fiber, wireless.

(3) the Modbus frame format is simple, compact, easy to understand. The user is easy to operate.

C.with DSP control technology which has the advantages of fast calculation speed and high precision; DSP chip  make strengthen the power  management,reducing power consumption.

D.with DSP chip which integrate peripheral circuit in the interior chip, can achieve precise control, the circuit can realize full digital circuit, strong anti-interference ability, simple debugging and maintenance, low failure rate. Only need to upgrade the software control algorithm can quickly improve product performance;

E. The microprocessor on the PCB is a multipurpose, programmable device that accepts digital data as input, processes it according to instructions stored in its memory, and provides results as output. It is an example of sequential digital logic, as it has internal memory. Microprocessor make the converter more intelligent and automation

Technical parameters:

User site:

5000Kva SFC used in Zhonghang shipyard China	10000Kva SFC used in Zhonghai shipyard
8000Kva SFC used in Jiangsu Yangzixinfu shipyard	4800Kva SFC used in Jinhaiwan Zhoushan Zhejiang
1600Kva SFC used in a navy port of Nigeria	4000Kva SFC used in Indonesia' s navy port