Regulator, vehicle alternator and method for detecting speed thereof
A technology for alternators and regulators, which is applied in the direction of controlling generators, generator control parts, electrical components, etc., and can solve problems such as potential drift, difficulty in the speed of automotive alternators, and difficult detection of amplitude and frequency by regulators. , to achieve the effect of improving performance, simplifying circuit complexity, and being easy to detect
Inactive Publication Date: 2020-11-17
ACTRON TECH
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Problems solved by technology
Since the residual magnetism in the rotor coil core is usually very weak, the induced voltage signal generated by the stator coil is also very weak. If the amplitude of the induced voltage signal is lower than the critical voltage value, the regulator will not be able to detect the induced voltage The frequency of the signal, of course, cannot calculate the speed of the car alternator
[0004] In addition, the weak induced voltage signal of the stator coil is also likely to cause potential drift or signal attenuation due to the leakage of the diode of the rectifier, making it difficult for the regulator to detect the amplitude and frequency of the induced voltage signal at the stator coil end, thereby increasing the gain Difficulty in the rotational speed of the automotive alternator, which leads to poor self-excited start function of the automotive alternator
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[0062] In order to make the content of the present invention more comprehensible, the following specific examples are given as examples in which the present invention can indeed be implemented. In addition, wherever possible, components / members with the same reference numerals are used in the drawings and embodiments to represent the same or similar components.
[0063] Please refer to the following figure 1 , figure 1 It is a schematic circuit block diagram of a vehicle alternator 100 according to an embodiment of the present invention. The vehicle alternator 100 may include a rotor coil 110 , a stator coil part 120 , a rectifier circuit 130 and a regulator 140 , but is not limited thereto. The rotor coil 110 may cooperate with the stator coil part 120 to convert mechanical energy into AC electrical energy. The rectifier circuit 130 is coupled to the stator coil part 120 for converting AC power into DC power. The DC power can be stored in the battery 20, and can also be s...
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The invention provides an adjustor, a vehicle alternating current generator and a rotary speed detection method thereof. The vehicle alternating current generator comprises a rotor coil, a stator coilpart, a rectifier circuit and an adjustor; the adjustor controls the current which flows through the rotor coil; the rotor coil and the stator coil part perform collaborative operation to convert mechanical energy into alternating current electric energy; the rectifier circuit converts the alternating current electric energy from the stator coil part into direct current electric energy; and whenthe vehicle alternating current generator performs auto start operation by residual magnetism, the adjustor detects the rotor voltage signal frequency of the rotor coil to be used as basis for calculating the rotary speed of the vehicle alternating current generator. When the vehicle alternating current generator performs auto start by residual magnetism, the rotary speed of the vehicle alternating current generator can be correctly worked out by detecting the amplitude and frequency of the sensing voltage signal at the rotor coil end.
Description
technical field [0001] The invention relates to a generator circuit, and in particular to a regulator of a vehicle alternator, a vehicle alternator and a speed detection method thereof. Background technique [0002] A known vehicle alternator is composed of a rotor coil and a stator coil. Under normal operation, when the excitation current passes through the rotor coil, the rotor coil can provide a magnetic field to the stator coil. When the internal combustion engine of the car drives the rotor coil to rotate, the rotor coil will generate a rotating magnetic field, making the stator coil generate AC power. The rectifier of the automotive alternator accepts the AC power from the stator coil and rectifies it to generate DC power. This direct current energy can charge the battery or supply power to the load. The battery can also provide excitation current to the rotor coil via the regulator in the vehicle alternator. [0003] Generally speaking, the current regulator detec...
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IPC IPC(8): H02P9/02H02P9/08H02P101/45
CPCH02P9/02H02P9/08H02P2101/45
Inventor 游家崧
Owner ACTRON TECH