CPM Series Permanent Magnet Motor Variable Speed Screw Air - - PowerPoint PPT Presentation

CPM Series

Permanent Magnet Motor Variable Speed Screw Air Compressor

PAR ART T 01

Why we choose the VSD compressor

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Big Air Fluctuation

Air Demand Profile n°2

Air Demand Profile n°3

Time Capacity in l/s Sunday Monday Tuesday Wednesday Thursday Friday Saturday

Time Capacity in l/s

Usually we choose air compressor model is according with factory biggest air demand (biggest loading factor) The average loading determines the air consumption of the compressor.

88% 12%

空气需求曲线1

空气需求曲线 2 空气需求曲线 3

Measured results of air compressor usage in more than 4000 customers in the world

88% of customers air demand is severe fluctuations Air demand 1 Air demand 2 Air demand 3

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DO YOU KNOW

When the air compressor is unloading, it consumes approximately 60% electric power but giving you nothing in return. Since the compressor’s electric motor still consumes about 60% of full load kw Low Loading Rate

OH MY GOD!!!

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The cost of fixed speed compressor The cost of VSD compressor

So it is very necessary to select the VSD screw air compressor!!!

Energy saving

VSD screw air compressor average energy saving is more than 30%

Air Compressor Life Cycle Cost Analysis

Consumption Maintenance Installation Investment

PA PART 02

How the VSD compressor save energy?

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VSD compressor loading and unloading mode

The inverter controls the speed to deliver the air volume, avoid unloading and save energy. Below is the fixed speed compressor operation mode. Green is loading, yellow is unloading.

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• ENERGY WASTE

– Start repeatedly – Unloading

Electric current(A)

When is unloading, power consumption is a large part of the total power consumption in most applications All of above waste,using the VSD compressor will not exist

VSD compressor loading and unloading mode

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Fixed speed compressor VS normal VSD compressor

content fixed speed compressor normal VSD compressor remark reason result reason result

Purchasing cost low cost good increase inverter and other parts bad maintenance cost intake valve movement frequent, air-end、motor high speed,High failure rate bad intake valve movement less, air-end、motor low speed,low failure rate good power consumption Wide pressure zone, pressure difference is 0.2MPa,need to select higher pressure,besides Large leakage in the air-end and pipe bad Constant pressure air supply,pressure fluctuation is 0.01Mpa,can select more lower pressure good save 15~40% erengy heavy unloading power consumption Variable speed regulation,non or less unloading,save10~26% The star triangle starts, the current is 3-6 times,big power consumption Soft starts,low power consumption The power factor of the motor is low and hige current The power factor of the motor is high and low current noise The rated speed is constant, the impact of start is big and the noise is big bad Running at lower speed, Small start conflict, small noise good life high speed,big impact bad low speed,small impact good selection of air tank big pressure fluctuation,need big air tank bad small pressure fluctuation,need small air tank good air supply pressure big fluctuation,Big influence on air equipment,after treatment is not good for water and oil removal, and it is more adverse to the products bad The constant pressure has little influence on the air equipment. More favorable for the products good Starting current 3-6 times the amount of current, large impact on the power net bad soft stars, Small start current good

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Fitted with “VSD” and “Fixed Speed” selector switch, unit can be reverted to normal fixed speed operation if the inverter is faulty or under repair, not affect the production efficiency.

If you always worry about the inverter, use our normal VSD compressor is very suitable for you!! Tips

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Normal VSD VS permanent magnet synchronizing VSD

content normal VSD compressor permanent magnet VSD compressor remark reason result reason result

Purchasing cost motor is cheaper,but have bearing,coupling or belt bad motor is expensive,but no bearing,coupling or belt good maintenance cost have bearing,coupling,belt,many failure points bad no bearing,coupling,belt,less failure points good power consu mption air-end low speed,poor efficiency bad low speed,high efficiency good (save 5~7% energy) Adjustment precision Asynchronous motor, have slip rate, low Adjustment precision Synchronous motor,higher adjustment precision adjustment rangesmall adjustment range（40-100%） big adjustment range（25-100%） transmission Transmission loss 1-1.5% non-Transmission, efficiency nearly 100% motor Low power factor, large current and high power consumption. high power factor, small current and low power consumption. Motor efficiency is 94-95%. Motor efficiency is 94-95%. low speed,poor Efficiency low speed,better Efficiency The rotor magnetic field need to consumes electrical energy to conver. the rotor have magnetic field,no need to consume. motor IP54,dustproof and waterproof ability is strong. good motor IP23,Inner wind, dust large.Easy to cover permanent magnet, easy to demagnetize. bad Technology advancement not good bad advanced good volume motor volume is big,and Large transmission chain volume low The motor is usually only 1/3 of the ordinary motor, and the transmission chain is smaller. good

PA PART 03

YOUR BEST CHOICE

permanent magnet VSD compressor

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Technical Parameter

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Details photos

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Features

Permanent Magnet Motor – improve the motor efficiency Inverter technology– no unloading, no wastage No pressure loss – reduce the pressure consumption

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Features Screw technology (since 2006) Permanent magnet motor technology (since 2000)

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Features

Construction energy saving One-shaft direct driven, can save about 3%~5% transmission energy No gear, no bearing, no oil seal, no gear box, no need shafting alignment

No gear No bearing No oil seal No shaft seal shell No gear box No need shafting alignment

Compressor male rotor motor Tapered shaft Gap of stator & rotor Cooling fan Cool air bolt stator PM rotor

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Features

Transmission way

Theoretical transmission efficiency

Theoretical efficiency difference One-shaft 100% Coupling 99% 2% Belt 97% 3%

PM motor and air-end are one-shaft structure, no bearing in the motor, no coupling and belt, reduce the fault rise of bearing, coupling, belt and very low maintenance cost Compact size of the PM motor, it is about 1/3 of normal VSD motor, therefore the PM motor more easy for installation Construction energy saving

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Features

Permanent Magnet Synchronous Motor

Permanent magnet motor Through the AC voltage magnetic field of stator coil and magnetic force to let the rotor run Asynchronous motor Stator coil produce a rotation magnetic field (+ pole & - pole), rotor (secondary conductor) feel the magnetic field and run

Asynchronous Motor

PM motor energy saving

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Features

PM motor energy saving With the high-performance permanent magnet material, PM motor don’t lose magnetic even with the temperature of 140 ℃.It’s life will be more than 15 years. Specialized corona-resistance enameled wire is applied to stator coil . Wide frequency conversion range: 25~100%

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Features

PM motor energy saving

Motor efficiency(%)

22kw PM motor 22kw normal motor

Motor speed (rpm) PM motor & Asynchronous motor efficiency comparison

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Features

PM motor energy saving No matter in any speed, PM motor always keep in high efficiency, but normal motor low efficiency during in low speed (normal motor efficiency loss about 5-10%)

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Inverter adjusts the motor speed to let the compressor offer exact compressed air according with the air demand top brand Innovate inverter Vector control technology, fast response Wider voltage range: 300v~440v Inverter energy saving

Features

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Features

Soft starting, the VSD compressor can be started from 0hz by the inverter. The start current is small. It

can reduce the damage of power network, electric elements and other components. Starting current for the fixed speed start-delta starting is about 3-times motor rated current or HP. Direct start is 6-7 times motor rated current or HP. Example: starting current for a 50hp motor is 150hp(for not exceeding 8 seconds), whereas the SOFT STARTING current for an inverter compressor is only at 25% if motor HP. This means a 50hp inverter compressor needs only 12.5HP starting current!

Inverter energy saving

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Constant pressure setting

VSD com pressor can m aintain the pressure w ithin 0 .1 bar

Inverter energy saving

When a fixed speed compressor’s unload pressure is set at 7.5bar, and reload pressure at 6.5bar. Inverter compressor’s CONSTANT PRESSURE can be set at 6.5bar, supplying constant 6.5bar pressure air to the usage points. This lower pressure can minimize air consumption to the lowest. No need to compress the air to higher 7.5bar pressure reduces motor amperes hence the energy consumption

Reduce 1bar pressure can save 7-8% energy!!!

Features

Fixed speed pressure Variable speed pressure Variable speed setting pressure T (air compressor working time) Pressure (MPa) Fixed speed unloading Fixed speed loading Variable speed pressure

Variable speed control and Fixed speed control comparison

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AIR-END life is much longer

Air-end speed for fixed speed compressor is always at the maximum 2950rpm, load or no load. For inverter compressor, it is Variable between 1200-2950rpm, Fix speed compressor overhaul is recommended at 24000hours, whereas inverter drive air-end need only to be overhauled at 32000hours

Features

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Color touch screen

has the remind & record function, show the compressor situation clearly Maintenance tips, which can set the run time and stop time Carry out the remote control and user-machine operation, which means your compressor can be controlled by phone (option)

Features

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Easy for maintenance

Features

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High temperature & humidity environment design, compressor can be used in maximum ambient T 46℃ environment

Features

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Top door is locking design, easy to open to clean the cooler and fan

Features

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Uses stainless steel pipe, durable and anti-aging Oil filter is thread and o-ring seal, easy to remove and no leakage

Features

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The fan is low speed, with longer service life Cooler and fan can be removed independently, there is 20% cooling margin.

Features

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Reliable inlet valve system. No need to be concerned about oil injection when the emergency stop and power is off suddenly.

Features