Contact: Mr.Yang 
Phone/WhatsAPP/Wechat: +8615768564547
Email: [email protected] 
Company Website:  /en/show_114.html


Shenzhen Syxetc Technology Co., Ltd. is located in Guangming New District, Shenzhen, Which is a professional engaged in high voltage power supply, power products research and development and sales of high-tech enterprises. 
Based on independent research and development, the company has a research and development team from internationally renowned enterprises.

We are committed to providing perfect power supply solutions of high input voltage power supply, 
photovoltaic power supply, intelligent manufacturing, power equipment and medical equipment, 
and high performance, excellent quality, highly reliable power supply products.
 The current power supply covers 2W~20000W power range, can be customized for customers all kinds of high-end power supply, in strict accordance with industry standards and enterprise standards, but also for old customers to provide free customization services.

 Dedicated to provide high quality and reliable products and perfect service for domestic and foreign customers.
Syxetc adhering to the "integrity-based, excellence, pursuit of excellence, sincere service" spirit of enterprise, vigorously advocate the "innovation, pragmatic, dedication, integrity, mutual help" spirit, to provide customers with exquisite structure, high quality and reliable, economic and practical, quality excellent products and services. Syxetc technology sincerely wish to cooperate with you to create brilliant.

Syxetc can customerize high input voltage DC power supply , such as 
High INPUT Voltage DC Power Supply Main Application
Customerize High Input Voltage Range DC Power Supply
Special High Input Power Supply
Mine Power
Air cleaning Equipment 
Drone
UAV
Renewable Energy

Welcome to contact us to discuss your own needs of power supply, we will share our experience and give our professional advice.

Types of variable frequency power supplies that can carry loads

The variable frequency power supply can carry loads with various impedance characteristics, including common loads of inductance, resistance, and rectification. It should be noted that the power capacity of the variable frequency power supply is very different for different types of loads.
 
1. Types of load properties:
Linear loads Non-linear loads Resistive loads or Power factor corrected loads Inductive loads Capacitive loads Rectifier and filter loads with electrolytic capacitors
 
2. Main characteristics of different loads:
Load type voltage and current difference surge current current distortion power factor active power reactive power linear resistive load and power factor corrected load no medium no cosφ= 1 100% non-linear rectification filter load with electrolytic capacitor high cosφ ≈0.7 about 70% about 30% of linear inductive loads (motors, air conditioners) with or without cosφ≈0.8 about 80% of 20% linear capacitive loads with or without cosφ<1
 
3. Power supply capacity selection method
Resistive: power supply capacity = 1.1×load power
Sensitivity: power supply capacity = load starting current / load rated current × load power
Rectification: power supply capacity = load current crest factor/1.5×load power
Mixed type: please select appropriately according to the proportion of different loads
 
Note: For inductive loads such as refrigerators and air conditioners, the power supply capacity should be selected according to the starting power. (The starting power is generally 5-7 times the rated power)
 
Four. Three-phase AC power IGBTPWM system structure principle, common structure
1. Separate (independent) three-phase AC power supply, no power transformer structure, input is not isolated, output is isolated:
Three independent output transformers, three sets of converters, the number of IGBTs used is up to 12;
Three sets of converters can also share one set of rectifiers;
The three-phase is formed by a complete single-phase integrated connection, which can be used in single-phase (use any one phase) or three-phase;
It is suitable for three-phase balanced and unbalanced (100% unbalanced) loads, and can be manufactured in one chassis or three chassis according to requirements. The structure is different, the cost is different, and the performance is of course different;
 
2. Low-cost three-phase AC power supply, no power transformer structure, input is not isolated, output is isolated:
One output transformer has three sets of windings, one set of converters, and only 6 IGBTs are used;
Can only be used for three-phase loads (cannot be used separately for each phase), not suitable for three-phase unbalanced loads;
This structure can only be crafted in one chassis
 
3. Independent three-phase AC power supply, no output transformer structure, input isolation, output not isolated:
One power transformer, three sets of inverters, the number of IGBTs used is 12
The three-phase is formed by a complete single-phase integrated connection, which can be used in single-phase (use any one phase) or three-phase
It is suitable for three-phase balanced and unbalanced (100% unbalanced) loads, and can only be produced in one chassis.