Motor excitation cabinet has accurate control and strong anti-interference ability

 What is the function of excitation cabinet? It has been widely used in synchronous motor drive such as mine ball mill, smelting blower, cement mill, fertilizer plant combined compressor, compressor and so on. The reliability of the system operation is improved, the control is accurate, and no debugging is needed. Xiangyang high-quality excitation cabinet, Xiangyang Tenghui Electric Manufacturing Co., Ltd.(certified merchants) provided by Xiangyang Tenghui Electric Manufacturing Co., Ltd. Xiangyang Tenghui Electric Manufacturing Co., Ltd. has devoted infinite enthusiasm and passion to the field of electronic and electrical products manufacturing equipment. The company has always been customer-centered, creating value for customers, winning the market with quality and service, and sincerely hopes to cooperate with all sectors of society to create success and brilliance.

 
KGL synchronous motor excitation cabinet full digital control technology motor excitation cabinet control accurate anti-interference ability strong performance characteristics:
 
1. Rotor excitation adopts three-phase full-controlled rectifier fixed excitation circuit;
 
2. There is no direct electrical connection with the stator circuit of the synchronous motor;
 
3. According to the slip of synchronous motor rotor, forward polarity automatic excitation is realized. Excitation shall be put into operation when subsynchronous speed (95%) is reached, so that synchronous motor is dragged into synchronous operation;
 
4. With voltage negative feedback to automatically maintain constant excitation;
 
5. Automatic de-excitation when starting and stopping, and de-excitation protection when synchronous motor runs asynchronously;
 
6. Excitation current can be adjusted manually, voltage power factor adjustment, rectified voltage can be adjusted continuously from 10% to 125% of rated value;
 
7. AC input power and stator loop of synchronous motor come from the same section of bus;
 
8. The synchronous power supply of rectifier circuit and trigger circuit of the equipment shall not be allowed to be cut off within 5 seconds after the synchronous motor stops normally;
 
9. The resistance of de-excitation resistors RFD1 and RFD2 is 5 times of DC resistance of rotor excitation winding, and its long-term allowable current is 15% of rated excitation current of synchronous motor;
 
10. When the synchronous machine is running in step, it can send out step signal for alarm or trip;
 
11. Input power supply is 380V.
 
 
 
KGL synchronous motor excitation cabinet full digital control technology motor excitation cabinet control accurate anti-interference ability strong role:
 KGL synchronous motor excitation cabinet full digital control technology motor excitation cabinet control ** anti-interference ability is to add a DC power to the rotor of the air compressor motor, so that the rotor of the motor is equivalent to an electromagnet synchronous motor is a stator side with AC current excitation to establish a rotating magnetic field, rotor side with DC current excitation constituted by the bilateral excitation of AC motor rotating poles. The principle of operation is that the rotating magnetic field pulls the rotating magnetic poles synchronously with magnetic pull.
 
 
KGL synchronous motor excitation cabinet full digital control technology motor excitation cabinet control accurate  anti-interference ability strong working principle:
 After the synchronous motor is started, it is put into synchronous operation. If the de-excitation thyristor is not turned off, when the three-phase full-control bridge AC measuring power supply appears that phase A is positive and phase B or C is negative, the discharge resistor FRD1 and the thyristor 7KP are short-circuited by the extinction line, and the thyristor 7KP is automatically turned off without current passing.
Wait until the three-phase full-control rectifier bridge AC power supply phase change, that is, A phase AC power supply from positive to negative, the current flowing through the thyristor 8KP and discharge resistor FRD2 also from positive to negative, when the current decreases to the thyristor 8KP maintenance current below the moment, the thyristor 8KP no current also automatically closed.
 This ensures that after excitation synchronous motor dragged into synchronous operation within a cycle, de-excitation thyristor can be automatically closed accurately. After that, although the rectified voltage of the three-phase full-controlled rectifier bridge is applied to the de-excitation thyristor 7· 8KP respectively, the voltage divided by the potentiometer is not enough to trigger the thyristor 7· 8KP to conduct, so the discharge resistors RFD1 and RFD2 are cut off.

KGL synchronous motor excitation cabinet full digital control technology motor excitation cabinet control accurate anti-interference ability strong overview:
 KGL series synchronous motor excitation cabinet adopts digital control technology, microcomputer monitoring synchronous motor running state, accurate control, strong anti-interference ability, host friendly interface, easy and fast operation, stable and reliable work. This product is widely used for synchronous motor drive such as mine ball mill, smelting blower, cement mill, fertilizer plant compressor, carbon dioxide compressor, air compressor, refrigerator ammonia compressor, water pump and other general mechanical equipment, is to drive large synchronous motor DC excitation power supply and synchronous motor single use.
 
KGL synchronous motor excitation cabinet full digital control technology motor excitation cabinet control accurate anti-interference ability strong products sold using pictures: