YDZ-80-4 China Brushless EC Motor BLDC Motor Air Conditioning Cooler Fan Motor

What is an EC Motor? (What is a BLDC Motor?)

When it comes to motor design, engineers have three main types of choice—alternating current motor (AC motor), direct current motor (DC motor), and electronically commutated motor (EC motor).

What is an EC Motor (Electronically Commutated Motor) ? EC motors are also known as brushless DC motors, ECM motors and BLDC motors. It is direct current, external rotor type of motor in which AC voltage is converted to DC voltage by a commutator. EC stands for Electronic Commuting. EC fan motors are brushless motors whose rotors and onboard electronics are designed with permanent magnets to control the voltage and current applied to the motor. Without getting too technical, it's a brushless motor that uses AC power to run on DC voltage, combining the best of both worlds.

How does a BLDC motor work? The rotor of an BLDC fan motor is a permanent magnet and the stator has a coil arrangement. By applying direct current to the coil, the coil is energized and becomes an electromagnet. The operation of ECM motors is based on the force interaction between permanent magnets and electromagnets. When one coil is energized, the opposite poles of the rotor and stator attract each other. When the rotor is close to one coil, the next coil will be energized. This process is repeated and the rotor continues to rotate.

What are the advantages of ECM motors?

EC brushless motors are smaller than other motors and offer the same level of performance. This is because they do not rely on carbon brushes, but are controlled by an external electronic circuit board. Therefore, they provide greater controllability and higher efficiency. Therefore, unlike DC or AC motors, brushless EC motors only run when needed and do not overuse energy.

EC Motor Speed Controller

Some interesting questions may come to your mind: how do we know which coils to energize and when to energize the rotor continuously? The answer is, the electronic controller. The sensor determines the position of the rotor, and based on this information, the controller decides which coil to power.

An EC motor consists of an integrated system. It contains:

(a) Converting electronic equipment

(b) Speed control electronics

(c) Stator and DC rotor.

BLDC Fan Motor Structure

BLDC motor is not that complicated, referring to its structure. China brushless bldc motor from CPMDJ consist of a stator and contain a rotating rotor inside, which is surrounded by pole-pieces and a bldc motor controller or called ec motor controller. All our EC fan motors comply with the appropriate International Standards as far as: ec fan motor output, bldc fan motor performance and dimensions of china ec fan motor. 

CPMDJ's ec motor control has high precision with high performance which is benefit from continuing development of ec motor technology team. Changzhou Changpeng Motor Co.,Ltd is proud to present CPMDJ technology with low temperature rise, silent noise and low vibration. BLDC motor drivers is designed and matached by our own team, economical and high efficiency. 

Electrical BLDC Motor Suppliers & Manufacturers

If you are seeking for bldc motor manufacturer or bldc motor driver factory, you have come to the right bldc motor control and china brushless bldc motor driver website. OR, if you want to know bldc motor drive, bldc motor control, bldc motor design or bldc motor price, even bldc motor diagram, please just feel free to contact CPMDJ, china bldc motor suppliers, wholesale bldc motor manufacturer & supplier & factory in china. 

BLDC Motor Manufacturing Processes

CPMDJ has expent huge manual work, skill and years of experience to offer such a wide range of EC fan motor. Furthermore, Changzhou Changpeng Motor Co., Ltd has dipping equipment and drying kilns with shaft heights up to 800 mm, an in-house welding shop for flexible production of special components and custom welding designs, VPI dipping equipment and experienced specialists who truly understand their processes. This is how CPMDJ guarantee you the high quality, reliability and durability of china ec fan motor.

1. STATOR CORE & ROTOR CORE Stator core and rotor core for fan motor from ec fan motor supplier & factory & manufacturer are built up of thin punched laminations of Silicon Steel, its stator laminations and rotor laminations are made by high speed punch machine which is invested by our own, and this plays a vital role in quality of ac fan motor. Over 10 Million press strokes per day allows output of over 100 Tons finished stator / rotor core laminations each day.
	2. COIL WINDING Professional in the ec motor technology, team from ec motor fan factory & manufacturer & supplier has extensive experience working with both copper and aluminium wire in various forms to provide coil winding solutions. Our broad customer base demands that we cannot only supply our standard range of emc fan motor but also have the capability to provide custom solutions to solve challenges others can't. Contact your electrical bldc motor supplier & manufacturer now!
3. STATOR ASSEMBLY Changpeng Motor Co., Ltd, best bldc motor manufacturer, has specialized in bldc fan motor technology, stator assembling can be solved by our own professonal assembly technique. It meets the requirements of series production in universal ac condenser fan motor, fan coil motor, hvac fan motor, condenser fan motor, cooler fan motor and other fan motor for ac unit. We develop and examine the entire process chain - from slot insulation to impregnating the stator and test.
	4. ROTOR ASSEMBLY Rotor assembly is critical to bldc motor in a variety of industries and applications, like condenser, air conditioner, evaporator etc. CPMDJ, provides high quality silicon steel material to create professional and high quality rotor assembly for all AC fan motors. A rotor assembly of ac fan motor normally includes a cylindrically shaped shaft, a processed rotor iron core and a bearing.
5. FAN MOTOR SHAFT Motor shaft is the main component in electric fan motor. The size of the shaft significantly affects the torque in fan motor. In addition to the need to mount the rotor and a variety of attachments, like bearing, the model of the motor shaft is based on the cooling concept selection of the electric device. CPMDJ, bldc motor manufacturers & suppliers always offer you high quality shaft as air conditioner fan motor parts.
	6. MOTOR ASSEMBLY & TESTING Motor assembly includes assembling stator assembly, rotor assembly and end cover assembly with front cover. Testing of china electric bldc motor from low noise bldc motor supplier & factory, Changpeng Motor, cover the whole areas from stator insulation test, electronic integrated test bench for winding inserting, motor integrated test bench, motor performance test, noise test and appearance detection through to dynamometer for high performance fan  motor testing.

Routine testing and type tests for all EC Motor

Process flow - routine, type, and system testing

The type test for asynchronous fan motors contains the following test steps:

• Visual inspection

• Resistance measurement of stator winding at ambient temperature

• Insulation resistance measurement of stator winding and accessories

• High-voltage check of stator winding

• Rotational direction check

• No-load check at partial voltage

• Heating test under load

• Measurement of load characteristic (25%, 50%, 75%, 100%, and 125% load)

• Bearing heating check at no load and rated speed (only for friction-type bearing machines)

• Check of fan motor accessories

• Measurement of ripple voltage at rated voltage, rated frequency, and no-load speed

• Creation of test report

In addition, the following optional tests are possible for asynchronous fan motors:

• Measurement of no-load characteristic (recording of no-load current and no-load power at differing voltage)

• Measurement of short circuit characteristic (recording of short circuit current and short circuit power at differing voltage)

• Determination of polarization index of stator winding

• Noise measurement (only at no load)

• System/routine/type test of asynchronous fan motors

The routine test for asynchronous capacitor start fan motors contains the following test steps:

• Visual inspection

• Resistance measurement of stator winding at ambient temperature

• Insulation resistance measurement of stator winding and accessories

• High-voltage check of stator winding

• Rotational direction check

• No-load check at rated voltage

• Short-circuit test at partial voltage

• Check of fan motor accessories

• Measurement of ripple voltage at rated voltage, rated frequency, and no-load speed

• Creation of test report

In addition, the following optional tests are possible for asynchronous fan motors:

• Measurement of no-load characteristic (recording of no-load current and no-load power at differing voltage)

• Measurement of short circuit characteristic (recording of short circuit current and short circuit power at differing voltage)

• Determination of polarization index of stator winding

• Noise measurement (only at no load)

• Type testing of asynchronous fan motors, with heat run

As a prominent and leading wholesale bldc motor manufacturer, condenser fan motor suppliers & factory from china, Changpeng motor is willing to open worldwide market by agency. Be our agency, you can extend your business fast for your fan motors at the competitive price, stable qualtity and excellent after service. Contact your bldc motor manufacturers & ec fan motor supplier to get bldc motor price now!

24/7 After Service Availability

As a BLDC motor factory & manufacturer & supplier, Changpeng Motor Co., Ltd offers our customers further important plus points except focusing on fan motor quality. One of our focal points is the fast delivery of bldc motor with bldc motor controller - including special designs. 

Flexible machining from our ec fan motor factory, manufacturer & supplier allows us to achieve exceptional response times. CPMDJ customers around the world appreciate our fast delivery service. Try us out! Team of experts from Changpeng Motor Co., Ltd will help you to find the right emc fan motors for your application.

24-hour emergency hotline

CPMDJ provides a 24-hour hotline for our bldc motor customers. You can use it to reach us around the clock in the case of a pressing operational disruption. With CPMDJ, you can depend on an bldc motor manufacturer &  factory & supplier who can supply bldc motors with various voltages and outputs even outside normal working hours - all around the world.