How To Choose between Single-phase Generator And Three-phase Generator

How to choose between single-phase generator and three-phase generator

In the world of power technology, generator as the core equipment of energy conversion, its type and performance are directly related to the stability and efficiency of the power system. Single-phase generator and three-phase generator are two main streams in power equipment, each with its own characteristics and application fields. So how to choose?The choice of single-phase and three-phase generators depends on your specific power needs and application scenarios. This article will first understand the basic concepts, structural characteristics and working principles of the two, and then explain the main differences between them, and then talk about the advantages of each other. At the end of the article, common application scenarios will be listed to provide you with the correct generator selection guide.

Basic concept: Single-phase generator refers to a generator with only one winding to generate electromagnetic induction and can only output single-phase alternating current. Three-phase generator refers to three windings that produce electromagnetic induction of different phase numbers, and can output three-phase alternating current.

Structural characteristics:Single-phase generators usually use distributed windings, while three-phase generators use centralized windings. In terms of rotor, the telescopic rotor is commonly used in single-phase generators, while the winding rotor is mostly used in three-phase generators.

How it works:

The single-phase motor has two windings, namely the starting winding and the running winding. The two windings differ by 90 degrees in space. When a capacitor with a large capacity is connected in series on the starting winding, the current in the starting winding is 90 degrees ahead of the current in the running winding due to the action of the capacitor, and reaches the maximum value first. In time and space, two identical pulse magnetic fields are formed, so that a rotating magnetic field is generated in the air gap between the stator and the rotor. Under the action of the rotating magnetic field, the induction current is generated in the motor rotor, and the current and the rotating magnetic field interact to produce electromagnetic field torque, so that the motor rotates.

Three-phase generator is electromagnetic induction in space, when the difference of 120 degrees Angle of the three point winding to provide excitation for the generator, the formation of a magnetic field, according to the electromagnetic induction away, when the three-phase excitation rotation, in the stator three-phase winding will form inductive three-phase AC. Adjust the current size of the rotor coil, you can change the voltage, adjust the rotation speed of the rotor, you can adjust the frequency.

Thebiggest difference between single-phase generator and three-phase generator

Single-phase generators are mainly 110V, 220V, 230V, 240V household electricity voltage standards.

In addition to 220V is the common voltage in most countries and regions.

110V:Colombia, Dominica, Guam, Ana, Haiti, Honduras, Iran, Japan, South Korea, Lebanon, Mexico, Peru, the Philippines, Somalia and other countries;

120V:in the United States and Canada; 

230V:The Netherlands, Norway, Italy, Germany, France, Belgium, the United Kingdom;

240V:Australia and New Zealand, Fiji and some Pacific island countries.

Customers who generally ask us to buy generators often choose single-phase generators, because most of their targeted sales groups are using household appliances. Generally, the generators produced by Huahe are equipped with 220V voltage, which meets the voltage standards of most regions. For the above-mentioned customers who need 110V voltage, for example, we will make double-voltage (110V and 220V coexist) generators.

Three-phase generators are mainly 380V and 400V industrial voltage standards.

Advantages of three-phase generator over single-phase generator

1. Higher stability: The three-phase generator generates power through three phases, and the voltage and current between each phase are balanced, which makes it have higher stability during operation. We have met customers who want to put home electricity and industrial electricity together, then we will recommend three-phase generators, because according to the voltage standard, single-phase generators are not suitable, three-phase generators can be adapted.

2. Strong load capacity: the load capacity of the three-phase generator is stronger, and it can provide power for multiple devices at the same time, without power output problems caused by excessive load. This gives it a wide range of applications in large industrial and commercial locations.

Advantages of single phase generator compared with three phase generator

1. Affordable: The structure of the single-phase generator is relatively simple, making its manufacturing cost lower and more in line with the budget of small-scale power consumers.

2. Wide range of application: The power generated by the single-phase generator is suitable for a variety of small electrical appliances and equipment, and the following applications can be applied: family temporary backup power supply, camping equipment, night market stalls, small business places, etc.

3. Easy maintenance: The design structure of single-phase generator is relatively simple, the volume is small, the installation process is relatively simple, and the operation is convenient. The maintenance process of single-phase generators is relatively simple, reducing the workload of maintenance personnel, and it is more advantageous for places that require frequent maintenance.

Sum up

Single-phase generator has a position in the power equipment can not be ignored, its affordable, wide range of application and low maintenance costs, so that it has obvious advantages in households, small business places and temporary power needs. The advantage of the three-phase generator is that it can provide more stable power output and strong load capacity, which is more suitable for large-scale industrial and power system applications.

No matter how much power you want to do, we Huahe Heavy Industry Co., Ltd. can do single-phase or three-phase type generators, mainly to see the customer's demand for voltage standards. Click the link below, you can jump to our official website of Huahe Heavy Industry Co., LTD. Huahe is a generator manufacturer with decades of experience (Chinese supplier, export to Europe, Southeast Asia, South America and other regional countries), welcome new partners to join the cooperation with Huahe.

Huahe Heavy Industry official website link:https://www.chinahuahe.com/