Introduction to the Technical Reforming Projects on Energy-saving Purpose for Fan or Pump Systems Driven by Alternatively Induction Motors with High Voltage and Current Rotation Regulators Based on Varied Frequency and Varied Voltage Technology

Backgrounds

Three-phase alternative induction motors, as the large terminal electrical energy consumers, have wide applications in industrial, agricultural, commercial, military, and municipal enterprises and engineering projects in modern China. The statistics show that 60% of electrical power are used by motors each year, and this percentage is in the trend of increasing. Meanwhile the motor systems are usually mismatched by their power requirement and driving capacity in many applications, and a lot of energy were wasted. Among the solutions dealing with these problems, the varied frequency and varied voltage motor rotation regulating is the most effective one. Comparing to the developed countries, however, China, the largest developing country in the world, still has much work to do to achieve energy efficiency regarding applications of the varied frequency and varied voltage motor rotation regulating technology for potential users.

A large proportion of fan and pump motor systems still adapt the mechanical components such as baffles, valves, and guide vanes as flow regulating devices, running at very low load rate with less efficiency. Consequently, from the point of view on energy saving, the technology reforming projects for these systems have extremely strategic significances. The main reasons are as follows:

• High voltage: three to ten Kilovolt

• High current: tens to hundreds Ampere

• High power: hundreds to tens of thousands Kilowatt

• Core equipment: high-power or very high-power fans and pumps are the core equipment in an enterprise, which require high reliability, easy maintenance, convenient control and longtime safe operation.

• Power-saving revenues: millions of energy bill cost will be saved.

The Guidelines for Fan and Pump Motor System Reforming Projects with Varied Frequency and Varied Voltage Motor Rotation Regulators as the Energy Saving Devices

1. Safety first: fidelity guarantee for the safety of fan and pump motor systems with no damage to the equipment and the personnel.

2. Fully meet the production process requirements: no potential or visible damage to the original production process and product quality.

3. Seamless connection with the current DCS of fan and pump motor systems.

4. No damage to the ecological environment: no pollution to users’ production and living environment.

5. Strictly abide by users’ secrets: without a written approval, absolutely non-disclosure of client’s economic and technical secrets.

The Technical Futures of the Varied Frequency and Varied Voltage Motor Rotation Regulators with High Electrical Power

• Reliabilities:
  • instantaneous restart once power-on after power-off;
  • isolated high and low voltage;
  • optical fiber communication;
  • redundancy design for control power supply (automatic switch on/off for AC and DC power supply);
  • classified multi-level fault protection.

• Conveniences:
  • color display screen, friendly human-machine interface with Chinese or English language;
  • voltage oscillating wave display;
  • automatic start and stop;
  • data backup and operation recording.

• Flexibilities:
  • local and remote monitoring;
  • multiple communication protocols, GPRS radio signal transmission;
  • multiple bypass schemes;
  • synchronized switching;
  • internal PID regulating; synchronous motor control.

Typical Applications:

Industries	Types of Equipment Applicable
Fossil Fuel Power Plant	induced draft fan, forced draft fan, dust suction fan, gas compressor, sewage extractor, boiler feed pump, mortar pump, etc.
Metallurgy	induced draft fan, dust suction fan, ventilator, de-phosphorus pump, mud pump, de-dirt pump, etc.
Petroleum and Chemical	main pipeline pump, water injection pump, boiler feed pump, water circulating pump, submersible pump, brine pump, induced draft fan, gas compressor, mixer, etc.
Cement	kiln induced draft fan, raw mill induced draft fan, pressure forced draft fan, main dust suction fan, cooler dust suction fan, cooler fan, preheating tower fan, branch fan, kiln forced draft fan, high temperature fan, air emission fan, etc.
Water Supply and Sewage Treatment	Sewage pump, clean water pump, purification pump, etc.
Mining	mine drainage pump, ventilating fan, medium pump, etc.
Paper	Beating engine, etc.
Pharmacy	slurry washing pump, etc.
Others	power transmission machinery, wind turbine, wind tunnel test, etc.

Projects Accomplished:

(1) Zunyi Chlorine -Alkali Chemical Plant in Guizhou, China

Type of load	Boiler feed pump	Power of electric motor	560kw	Voltage	10kv
Operating since	2007	% of energy saved	27%	Altitude	1200m

(2) Gejiu Copper Smelting Plant in Yunnan, China

Type of load	Gas compressor	Power of electric motor	1600kw	Voltage	10kv
Operating since	2008	% of energy saved	15%	Altitude	1400m

(3) Mengzi Metallurgy Plant in Yunnan, China

Type of load	Gas compressor	Power of electric motor	1600kw 710kw 560kw 450kw	Voltage	10kv
Operating since	2009	% of energy saved	16-20%	Altitude	1400m

(4) Maguan Metallurgy Plant in Yunnan, China

Type of load	Gas compressor	Power of electric motor	1000kw	Voltage	10kv
Operating since	2010	% of energy saved	18%	Altitude	1000m

(5) Gejiu Yunxi Copper Smelting Plant in Yunnan, China

Type of load	Gas compressor	Power of electric motor	4750kw	Voltage	10kv
Operating since	2017	% of energy saved	15-18%	Altitude	1300m

Why us?

Hardware

<< We buy quality and we make quality. >>

We use the best inverter made in China, which the manufacturer is now a Schneid company. Its reliability lasts up to 15 years, and has 99.9% uptime.

Expertise

Our chief engineer has over 30 years experiences in automation control projects, especially in power plant controls.

Video link of the 4750kw compressor in operation, https://youtube.com/shorts/Smh0sZDsLJ8?feature=share

Video link of the VFD in operation, https://youtube.com/shorts/z_Xy55tDqCs?feature=share

For inquiry, please write to service@mzwires.com