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ZINVERT Intelligent HV Variable Frequency Speed Control System

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As a leader in R&D and applications of technologies in the industry of domestic ultra-large capacity HV frequency converters, Zhiguang has constantly increased its R&D efforts and refreshed the capacity limit of domestic frequency converters for recent years. 7,000 kVA - 30,000 kVA ultra-large capacity HV frequency converters independently developed by Zhiguang have become strong competitors of similar foreign products and technologies.
 
For applications of the ultra-high power HV frequency conversion system, a series of Zhiguang’s high-end applications represent an excellent domestic brand comparable with international ones, such as: energy saving renovation projects of the variable frequency speed control system for electric feed pumps in 300 MW - 600 MW thermal power generation units, for combined induced draught fans in 600 MW and above thermal power generation units, and for main exhausts of sintering lines for high-power synchronous motors in the iron and steel industry; soft start of HV frequency converters for ultra-large capacity motors; and parallel operation of dual frequency converters.


Product Description:
The ZINVERT intelligent HV variable frequency speed control system has an H-bridge cascaded topological structure and contains multiple advanced control technologies, such as VVVF or vector control, “STT” rotational speed tracking, and active grid phase locking. It is integrated with specific functional modules for numerous special processes, including electric feed pump in thermal power plants, combined induced draught fan in power plants, 20 MW and above high consistency refiners and shredders for paper mills, main exhauster for sintering in iron and steel works, dual-drive semi-autogenous mill for mining, rubber internal mixer and extruder. Due to such remarkable features as high performance and reliability, small size and easy operation, such system is successfully applied in each industry requiring speed control under high voltage.
The number of such products used in China is more than 10,000. It is also exported to over ten countries and regions. Two and four-quadrant products are available. Stand-alone and multi-unit parallel operations are possible. The multi-unit linkage and high-accuracy control technologies are included.
Typical customers include Datang, Huaneng, Huadian, China Power Investment Corporation, Guodian, Baosteel, WISCO, Shougang Group, Angang Steel, Huaxin Cement, Jidong Cement, Sinopec and other well-known large groups.


Specification:
Output voltage: 3-10 KV
Power of matched motor: 250 KW - 80000 KW

 

2017 - 01 - 23
On December 28, 2016, the energy saving renovation project of the variable frequency speed control system for electric feed pumps in the domestic first 600 MW power generation unit of Shanxi Tashan Power Co., Ltd., which was designed and implemented by Guangzhou Zhiguang Energy-saving Co., Ltd. ("Zhiguang"), was put into operation and passed the required verifications successfully. Its e...
2016 - 05 - 23
Zhiguang Electric's Intelligent HV Variable Frequency Speed Control System for Dual-drive Semi-autogenous Mills Debugged SuccessfullyOn May 9, 2015, Zhiguang Electric's intelligent HV variable frequency speed control system for dual-drive semi-autogenous mills was successfully debugged in a mining company limited to the China National Gold Group Corporation and passed the direct HV motor load test...
2015 - 05 - 23
The Energy Saving Renovation Project of the Feed Pump System for the Thermal Power Generation Units in Linfen, Shanxi Province Put into Operation Successfully Recently, the energy saving renovation project of Shanxi Linfen Thermal Power Co., Ltd. regarding the feed pump system for two 300 MW power generation units undertaken by Zhiguang has been put into operation successfully in the middle o...
2015 - 05 - 23
The Energy Saving Renovation Project of the Feed Pump System for the Taizhou Power Plant Put into Operation Successfully In 2012, Zhiguang successfully completed the system energy saving renovation of feed pumps in Unit #1 of the Maliantai Power Plant for Ningxia Power Generation Group Co., Ltd. Subsequently, Zhiguang has constantly refreshed its records on the energy saving renovation projec...
2015 - 05 - 23
2×10 MVA Main Exhauster Frequency Converters in Sintering Line #1 of Ningbo Iron & Steel Company Limited Put into Operation Successfully On November 19, 2014, two 10 MVA ultra-large capacity frequency converters for the main exhausts in Sintering Line #1 of Ningbo Iron & Steel Company Limited were successfully put into operation in one shot. At present, such equipment has passed ...
2014 - 12 - 23
Successful Energy Saving Renovation of Feed Pump Systems for Unit #1 of the Wangping Power Plant of Datong Coal Mine Group  Through its repeated survey and demonstration efforts in many aspects, the Wangping Power Plant of Datong Coal Mine Group finally accepted Zhiguang's solution for the system energy saving renovation, according to which hydraulic couplers were replaced with a special HV f...
2013 - 12 - 09
Energy Saving Renovation Project of the HV Variable Frequency Transmission Control System for Belt Conveyors in the Rapid Loading System of Shanxi Xiaoliu Railway Co., Ltd.   On December 30, 2013, the HV variable frequency transmission control system project of belt conveyors for the rapid loading system of Shanxi Xiaoliu Railway Co., Ltd., which was undertaken by Zhiguang Electric, was ...
2014 - 05 - 09
Energy Saving Renovation of Frequency Converters for a Large-sized Special-steel Blast Furnace Blower System in eastern China   In Phase I project of a large special steel manufacturer in eastern China, a 550 m3 iron-smelting blast furnace was built mainly to provide special steel for many heavy machinery enterprises. Since 2009, it has performed the feasibility study on the frequency co...
2014 - 05 - 09
The Variable Frequency Speed Control System for the Domestic Maximum-capacity Main Exhauster (Exhaust Fan) of Sintering Was Successfully Put into Operation and Accepted                 On November 19, 2012, Zhiguang's variable frequency speed control system with proprietary intellectual property rights for domestic max...
2014 - 05 - 09
Special HV Frequency Converters for 10000kVA Synchronous Motors Put into Operation Successfully    Upon successful operation of special ultra-large capacity frequency converters for synchronous motors in Fujian Xinhai Metallurgical Company Limited and Hebei Xinjin Iron & Steel Co., Ltd., our 2×10000 kVA special frequency converters for synchronous motors were successfully p...
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