Key Concepts of Alternating Current

The alternating current produced by conventional diesel generator sets is widely used in our daily work and life. To help you gain a deeper understanding of alternating current, we will elaborate on four core concepts—cycle, frequency, instantaneous value, and peak value—as well as their intrinsic relationships, providing a comprehensive foundation for your knowledge of alternating current systems.

1. Relationship Between Cycle and Frequency of Alternating Current

The time required for an alternating voltage or current to complete one full cycle of positive and negative changes is called the cycle, denoted by the symbol T. Frequency, denoted by the symbol ƒ, refers to the number of cycles completed per second. It is evident that frequency ƒ and cycle T are inversely related, expressed by the following formulas:

T = 1/ƒ (s) or ƒ = 1/T

The unit of cycle is the second (s), and the unit of frequency is the hertz (Hz). The frequency of AC power supply in China is 50 hertz per second, commonly abbreviated as ƒ = 50 Hz.

2. Relationship Between Instantaneous Value and Peak Value of Alternating Current

Since the magnitude and direction of alternating voltage or current change constantly over time, they have different values at each moment. These values are called the instantaneous values of alternating current, represented by lowercase letters. Generally,irepresents the instantaneous value of current,urepresents the instantaneous value of voltage, anderepresents the instantaneous value of electromotive force.

The maximum instantaneous value of current, voltage, or electromotive force within one cycle is called the peak value, specified by uppercase letters with the subscript "m". For example,Imis typically used to represent the peak current,Umfor peak voltage, andEmfor peak electromotive force.

Since 1982, Dingbo Generator has been a generator set manufacturer qualified by the "National Internal Combustion Engine Quality Supervision and Inspection Center". The product quality has passed the IS09001 quality system standard certification. And obtained the qualification certificate for self-operated import and export. Over the years, Dingbo units have been widely used in all walks of life, and have won the network access qualification of the Ministry of Information Industry, the network access qualification of the Ministry of Radio and Television, the network access qualification of CNPC, the network access qualification of China Mobile, and the manufacturing qualification of marine units. In 2016, Dingbo was awarded the Certificate of Qualified Supplier of China Nuclear Power Group. Dingbo Generator has been cooperating with Shangchai Power for many years. In 2009, it became the OEM partner of Shangchai Power in China. Dingbo generator VOLVO unit ranks the top three in the Asia-Pacific sales volume, and is the core OEM partner of Sweden Volvo in the Asia-Pacific region. If any question please feel free to visit our website https://www.dieselgeneratortech.com/ or send email to [email protected].