ZT microcontroller streaking application small three phase motor framework

Beginners microcontroller, will struggle Water pump with the application of its various modules motor vehicle spare part function, such as serial port (232485) for a variety stator of functions of IC AC motor control, motor control, PWM interrupt, timer, human-computer interface stator application, CAN bus, etc. It is a necessary stages in the learning process, is the basic motor rotor skills. After this stage, contact different MCU will be found later, all the same, each have each advantage, and is easy to learn any new MCU of including some complex processors. And control of the MCU programming will enhance a high www.facebook.com/dongfeng.motor profile - is to control all kinds ac generator of peripheral (if the operation of the complex algorithm with DSP), motor vehicle spare part motor electric ac synchronous generator and peripheral and MCU communication mode generally has several sequential:, IIC, SPI, intel8080, M6800. So around the MCU programming is a very simple thing. However, this is only the surface of embedded development, in contact with a variety of MCU, exposed to complex design requirements, run after the operating system and so on, we are back to the single-chip microcomputer bare-metal development, before you know it will consider the whole program design the architecture of the problem; A good application architecture, is an experienced engineers and a beginner's watershed.

The use of 60 hz import motor and power supply design

 In the early 90 s, a rubber manufacturing company the five sets imported from North America (second-hand) rubber equipment, there are two production Farrell 11 d mixer and a SL sullair company - 32 type screw air compressor. Basic situation of the three electrical motor 12v 1000w devices test is good, according to the production requirements, companies need to benefit installation fan motor commissioning as soon as possible; But the use of these equipment there is a big technical problem: the driving gear of these devices is 60 hz five sets of high voltage motor, not directly into the 50 hz power grid of our country. But if all replacement for domestic 50 hz, 6 kv motors and high voltage, need to increase cost nearly 1 million yuan. In order to solve the technical problem, technical personnel for imported equipment of acmotortrading.blogspot.com the power supply system, switch gear, motor parameter and so on has carried on the earnest analysis and calculation, decided to adopt frequency conversion principle, tinkering with the system power supply design.

Stepper motor and ac servo motor performance comparison of different control precision

Two-phase hybrid stepper motor step Angle is 3.6 ° and 1.8 °, 5 phase hybrid stepping motors interval Angle is 0.72 ° and 0.36 ° in general. electric motor single phase motor There are also some high-performance stepper motor step Angle is smaller. Such as cross company produces a kind of stepping motor for wire walking machine, where the step Angle is 0.09 °. BERGER LAHR company in Germany (BERGER LAHR) production of three-phase hybrid water pump price stepping motor where the step Angle can dial the code permanent magnet generator switch is set to 1.8 ° and 0.9 ° and 0.72 ° and 0.36 ° and spare parts 0.18 ° and 0.09 acmotor2.blogspot.com ° and 0.072 ° and 0.036 °, combine www.dongfeng-motor.com the two and five phase hybrid stepper motor step Angle. Control precision of the ac single phase motor servo motor by the motor shaft after the rotary encoder. Panasonic digital ac servo motor, for example, in line with standard 2500 encoder of the motor, drive due to the permanent magnet generator internal used four frequency multiplication technology, the pulse equivalent to 360 ° / 10000 = 0.036 °. For with 17 encoder of the motor, drive each receive 217 electric generator = 131072 pulse motor turns a circle, namely the pulse equivalent to diesel generator set 360 ° / 131072 = 9.89 seconds. Interval Angle is 1.8 ° is 1/655 of the pulse equivalent of stepper motor.

DBJ08-20-98 household electric equipment should meet the following standard

Stator And Rotor ac induction motor parts 

Specifications
1. 20 years manufacturing experience 
2. competitive price,high quality 

3. Material: silicon steel 
13 and 3 phase induction motor grounded. Special ground wire (PE). In a setting into the diesel engine door of every building a set the ends of generator the earth and the connected line dish, the grounding resistance shall not be greater than 4. 14, lightning protection grounding and protection of the electric system is set up separately, lightning protection grounding auto spare parts resistance shall not be greater than 10. Talk single phase motor about it before, let's learn two basic formula for junior middle school physics: power = voltage by current; Copper core ac synchronous generator wire load voltage coefficient of x = x crosscutting ampere area (the coefficient of amps that should be roughly between about 5 ~ 10 amperes, about 10 in the single phase induction motor air, direct cement by death around 5, online pipe according to how much space between 6 ~ 8). Actually we decorate in the family in, basically open wire and circuit principle of www.facebook.com/guohong.trading distribution of big things come from these two basic physical formula, is very simple. Unfortunately, under our current market situation, more than 99% of all home electrical and magnetic generator decoration company materials manufacturers and habits to judge on the basis of the so-called experience.

The connection mode of current transformer, current transformer

electric motor stator rotor lamination motor parts 

Specifications
1. Lamination of electric motor 
2. IP54 class F 
3. 100% copper 
4. silicon steel stamping 

5.stunning performance 
The connection mode of current transformer load according to the receive operation requirement. The connection mode of the most commonly used for single-phase, three-phase star and incomplete star. Rated than the rating of the transformer and error change ratio KN ac electric motor refers to the rated voltage of the voltage transformer ratio and rated current of the current transformer ratio. The former is defined as the original winding rated voltage U1N and deputy while winding, the ratio of the rated voltage U2N; The ratio of the latter for rated current I1N to I2N. KN = U1N/U2N () of the voltage transformer KN = I1N/I2N () of the current transformer voltage (or current) transformer primary side voltage (or current) change within a certain range, the general rules for 0.85 ~ 1.15 U1N I1N (or 10 ~ 120%), deputy side voltage (or current) should be in proportion to change, and the original, deputy side voltage (or current) should be in phase. But due to the transformer, such as internal resistance, excitation current and loss factor and the ratio and phase error occurred, is called contrast and Angle difference respectively. 



OEM industrial electric motors

Specifications
1. effiency: IE2 and IE1 
2. 20 years manufacturing experience 
3. 12 months guarantee 

4. low noise and vibtration
Contrast electric motor price is after conversion of the secondary voltage (or secondary current) with a voltage (or current) the difference between the value size of the ratio of the latter, namely Ct (current transformer) current transformers. FU as the contrast of voltage transformer, fI contrast for current transformer. When KNU2 > U1 (or KNI2 > I1), contrast is positive, whereas negative. For no compensation measures of voltage transformer, contrast is negative, Angle difference generally positive, the absolute value of contrast and Angle difference decreases with the increase of voltage; Core motor electric saturation, contrast and increases with the increase of voltage and Angle difference. For current transformer without compensation measures, contrast negative, Angle difference is positive, the absolute value of contrast and Angle difference decreases with increasing electric current. Using the compensation method can reduce the error of the transformer. Generally by add around on transformer winding, or add additional core and access the corresponding resistor, inductor, capacitor element to compensate. Commonly used compensation method has a number of turns compensation, compensation, scores of turns compensation, small core shunt capacitance compensation, etc.

The working principle of four-way reversing valve

When electric motor price the electromagnetic valve is not electricity,work on the refrigeration system and the role of control valves for spring 1,valve core moves to the left side,is in a state of release,capillary E and C connected at this time. www.facebook.com/guohong.trading Because E on the low pressure suction tube,capillary C and main valve inside the left space for the low pressure,high pressure gas nozzle enters the main valve by the main valve,the main valve piston I vent in the right end of the space to become a high pressure,promote the main valve valve core is moved to the left,nozzle and nozzle 1 2 connecting the nozzle with the nozzle 3 in 4 and status form the refrigeration cycle system When the solenoid valve electricity,electromagnetic force pull-up control valve valve core to the right,capillary E connected to D. ac motor The main valve in the right space become low voltage,high pressure gas is entered into the main valve piston lamination II vent in the left space,promote the valve core to move to the right end,nozzle and nozzle 3 2 connecting the nozzle with the nozzle 1 in 4 and the function of the evaporator,condenser,exchange,system is transformed into heating circulation state.