Views: 16 Author: Site Editor Publish Time: 2025-04-30 Origin: Site
In modern industry, energy efficiency has become a key factor in the sustainable development and profitability of enterprises. Compressor motor systems are widely used in various industries and consume a lot of electrical energy. Optimizing the energy consumption of these motors can not only reduce operating costs, but also fulfill environmental responsibility. The transformation solution proposed by Huima Technology provides a comprehensive and innovative approach to solving this problem.
The main purpose of this transformation process is to maximize the efficiency of the compressor. The project aims to improve energy efficiency, reduce CO2 emissions and improve the overall performance and reliability of the system by replacing the existing motor with high-performance IE5 motors from Huima Technology. In addition, the new system must meet all requirements before implementation and ensure integration with the existing system without affecting performance.
The energy efficiency conversion program includes six turbocharged engines. The total installed power of the unit is 1132 kW, with powers ranging from 200 kW to 132 kW for a single engine. The project involves replacing these engines with Huima Technology's advanced low-speed synchronous motors and appropriate drive units.
The existing motor systems have the following specifications:
Power (kW) | Quantity | Running Frequency (Hz) | Running Current (A) | Run Time (h) | Load Factor |
200 | 2 | 50 | 352 | 8760 | 88% |
200 | 2 | 50 | 359 | 3650 | 89% |
132 | 1 | 50 | 232 | 3650 | 88% |
200 | 1 | 50 | 342 | 3650 | 86% |
The new propulsion system is designed to meet the requirements of the vehicle. It shall operate under normal operating conditions, comply with specific production procedures and ensure the correct functioning of all electromechanical components. The main goal of the project is to reduce energy consumption and carbon dioxide emissions without compromising energy quality and productivity.
The permanent magnet assisted resistive motor (Pma-Syn.RM) developed by Huima Technologies combines the advantages of a permanent magnet synchronous motor and a synchronous expansion motor. The new design makes the car more powerful, safer, more environmentally friendly and smaller. The motor has been repeatedly recognized for its excellent performance and is included in the "Recommended Catalog of Energy-Saving and Carbon-Reducing Technologies and Equipment of the National Department of Industry and Information Technology (2024 Edition)", becoming the only high-efficiency vehicle brand in the catalog. Its energy efficiency exceeds the excellent energy efficiency standards and is a benchmark for energy-saving measures.
What helps a synchronous resistance motor save energy is its unique performance. It operates at synchronous speed, so the rotor does not move, thus reducing rotor losses. This results in higher efficiency and efficiency compared to three-phase synchronous motors. The following graph visually compares the power output of a 7.5 kW synchronous resistance motor to a three-phase synchronous motor:
As shown in the figure, the IE5 permanent magnet motor conserves energy efficiently over a wide range of loads, demonstrating its efficiency in energy storage.
The energy-saving properties of the Huima system are due to several factors. First, the engine system has low starting torque, especially at low starting speeds, which significantly reduces energy consumption during starting. Second, it has the ability to adjust the speed of the vehicle according to the driving conditions. This control optimizes the operating parameters so that the engine runs smoothly under all loads. The high efficiency of the IE5 Extended Motor further contributes to saving energy, as it remains efficient under different loads.
Compared to conventional technologies, Huima's solution offers several advantages. Conventional systems often suffer from poor design and implementation. For example, they have a higher starting speed, allowing for greater energy efficiency during startup. In addition, conventional systems do not have the ability to adjust power in response to changing load conditions like the Huima system. This makes them less effective in different energy scenarios, where the ability to optimize efficiency to conserve energy is critical.
The annual power consumption of the original system is calculated using the formula:
Annual power consumption of original system
= rated power × load rate × number of equipment in operation × annual operating hours.
For the existing compressor motors:
Annual power consumption
= （200×88%×2×8760）+（200×89%×2×3650）+（132×88%×1×3650）+（200×86%×1×3650）
= 5,434,700 kWh
Based on the proven energy - saving performance of the synchronous reluctance motor system under similar working conditions, the estimated total energy - saving rate is 8%.
Annual energy saving
= annual power consumption of the original system × energy - saving rate
Annual energy saving = 5,434,700 kWh × 8% = 434,800 kWh
Assuming an industrial electricity price of 1 yuan/kWh, the annual electricity cost saving is determined by multiplying the annual energy - saving by the electricity price:
Annual electricity savings
= 434,800 kWh × 1 yuan/kWh = 434,800 yuan
It is important to note that these calculations are based on theoretical models and historical data. The actual energy - saving rate will be verified through measurements after the transformation.
The investment recovery period varies depending on the actual power - saving rate. The following table presents the investment recovery period under different power - saving rates (with a power - saving assessment error of ± 3%):
Power Saving Rate | Annual Power Saving (10,000 kWh) | Annual Electricity Cost Saving (10,000 yuan) | Investment Payback Period (years) |
5% | 27.17 | 27.2 | 1.6 |
8% | 43.48 | 43.5 | 1 |
11% | 59.78 | 59.8 | 0.8 |
The investment recovery period does not account for policy subsidies and tax incentives. Incorporating these benefits would further shorten the recovery period, making the investment even more attractive.
According to the "Electricity Conversion Standard Coal Coefficient" issued by the National Energy Administration, 1 kWh of industrial electricity is approximately equivalent to 0.296 kg of standard coal.
Based on the annual electricity saving of 434,800 kWh after the transformation, the annual saving of standard coal is calculated as:
Annual standard coal saving
= 434,800 kWh × 0.296 kg/kWh = 128.7 tons
According to the China Energy Statistical Yearbook, burning 1 ton of standard coal emits approximately 2.7 tons of CO₂.
The annual CO₂ reduction is calculated as:
Annual CO₂ reduction
= 128.7 tons of standard coal × 2.7 tons of CO₂/ton of standard coal
= 347.5 tons
To better visualize the environmental benefits, the CO₂ emission reduction is converted into an equivalent tree - planting amount. According to the United Nations Environment Programme, 1 tree absorbs an average of 18 kg of CO₂ per year.
The equivalent tree - planting amount is calculated as:
Equivalent tree - planting amount
= 347.5 tons of CO₂ × 1000 kg/ton ÷ 18 kg/tree
≈ 19,306 trees
Enterprises can take advantage of preferential policies for corporate income tax under the "Preferential policies for corporate income tax on environmental protection, energy conservation and water conservation". These policies allow for exemptions or reductions in corporate income tax, effectively reducing the overall cost of the transformation project.
Companies are eligible to apply for national or local special subsidies for energy - conservation and emission - reduction. These include energy - saving technology transformation subsidies, green manufacturing system rewards, and special funds for low - carbon development. These subsidies can significantly offset the initial investment, making the energy - saving transformation more financially viable.
The implementation of this energy - saving transformation serves as a foundation for future participation in carbon indicator trading. It also prepares for the impending carbon tax policy. By reducing carbon emissions, companies can not only meet environmental regulations but also potentially benefit from carbon trading in the emerging carbon market.
The power - saving rate is measured by collecting data through an electric meter agreed upon by both parties. First, the power consumption of the original asynchronous motor during a process run is measured as Pold (kWh). After the installation and commissioning of the new synchronous reluctance motor system, the power consumption of the same process run is measured as Pnew (kWh). The total number of modified motors is represented by n.
The power - saving rate of a single process η is calculated using the formula: η=(（Pold - Pnew）/Pold)× 100%
The total power - saving rate η is calculated as: η=(η1 + η2+……+ηn)/n
The original motors are of the IE2 energy - efficiency series three - phase asynchronous motors. When compared with Huima Technology's GB18613 - 2020 first - level energy - efficiency IE5 ultra - high - efficiency synchronous reluctance motor system, the new system offers a 3% - 4% increase in rated efficiency.
In actual operation, the load of the original motor often deviates from the rated working range, with an average load of around 50% - 90%. Under such conditions, the original motor's actual operating efficiency is low. In contrast, Huima's IE5 ultra - high - efficiency synchronous reluctance motor system maintains a high - efficiency zone within the load range of 20% - 120%. In this load range, the efficiency of the synchronous reluctance motor system is 8% - 12% higher than that of the original motor.
Based on these factors, it is estimated that the total electricity - saving rate of this renovation can reach approximately 8%. However, it is emphasized that this is a theoretical calculation, and the actual power - saving rate will be determined based on the actual transformation metering data.
Jiangsu Huima Technology Co., Ltd. is a technology - focused company dedicated to the research, development, manufacturing, sales, and service of ultra - high - energy - efficiency synchronous reluctance motor intelligent drive control systems. The company is committed to providing comprehensive solutions for energy conservation, carbon reduction, and industrial intelligence.
Huima Technology's IE5 ultra - high - efficiency synchronous reluctance motor system has found widespread applications across various industries, including metallurgy, chemical, textile, rubber, and plastic. The company has successfully completed over 300 energy - saving projects, yielding remarkable energy - saving results. The equipment equipped with Huima's motors operates smoothly, and the energy - saving effect has received unanimous acclaim from customers.
In 2024, the company's permanent magnet - assisted synchronous reluctance motor system application case was selected in the "Fourth Typical Cases of Key Energy - Saving Technology Applications" by the National Energy Conservation Center. Additionally, its "Energy - Saving Application Cases of Permanent Magnet Assisted Synchronous Reluctance Motors in the Petrochemical Industry" was recommended as the 2024 Engineering Service Case by the CAPE Carbon Peak and Carbon Neutrality Development Conference Review Committee. These achievements highlight the company's technical prowess and innovation in the energy - saving motor systems domain.
The compressor motor system transformation project proposed by Huima Technology offers a comprehensive and effective solution. By replacing the existing motors with IE5 ultra - high - efficiency synchronous reluctance motor systems, significant energy savings, cost reductions, and environmental benefits can be achieved. The project meets the technical requirements, ensuring stable operation and seamless integration into the existing production process.
With the growing emphasis on energy conservation and environmental protection, Huima Technology's energy - saving solutions are expected to play an increasingly important role in the future. The company's continuous innovation and successful project track record position it well to serve more industries and contribute to the global effort towards carbon neutrality. As more companies strive to reduce their energy consumption and carbon footprint, Huima Technology's motor systems are likely to become an increasingly popular choice in the market.
