A permanent magnet power generation system with low voltage regulation

Abstract

This invention discloses a permanent magnet power generation system with low voltage regulation, belonging to the technical field of permanent magnet power generation systems. Its features include: a three-phase permanent magnet generator and a detection and compensation module, wherein the detection and compensation module is electrically connected to the three-phase permanent magnet generator; the three-phase permanent magnet generator has a built-in voltage regulation circuit; the voltage regulation circuit includes chips N2 and N3; pin 1 of chip N2 is electrically connected to one end of resistors R23 and R22, and the other end of resistor R22 is electrically connected to pin 3 of transistor Q4. The technical problem to be solved by this invention is to provide a permanent magnet power generation system with low voltage regulation, where the power factor of the permanent magnet generator remains approximately equal to 1.0 regardless of the load's power factor. Therefore, the steady-state voltage regulation of the power generation system can fully meet the requirements of Class II standard in the National Military Standard GJB 235B-2000.

Description

Technical Field

[0001] The present invention relates to the technical field of permanent magnet power generation systems, and more specifically, to a permanent magnet power generation system with a low voltage regulation rate. Background Art

[0002] Permanent magnet synchronous generators have the advantages of simple structure, reliable operation, large power density, high working efficiency, etc., and thus have been increasingly widely used in fields such as small generators, vehicle-mounted generators, special vehicles, aerospace, etc.

[0003] However, the magnetomotive force of the permanent magnet in the permanent magnet generator is fixed. When the load of the generator changes, the output voltage changes accordingly. Especially in the case of inductive loads, the voltage regulation rate of the generator generally cannot meet the usage requirements. The military standard GJB 235B-2000 "General Specification for Military AC Power Stations" stipulates that for AC mobile power stations with a power range of 0.5kW < P ≤ 250kW, the steady-state voltage regulation should meet: Class I, -1.0 ≤ Δu% ≤ 1.0; Class II, -2.0 ≤ Δu% ≤ 2.0; Class III, -3.0 ≤ Δu% ≤ 3.0; Class IV, -5.0 ≤ Δu% ≤ 5.0. After the unremitting efforts of many scientific researchers, the designed and produced permanent magnet generators can meet the Class I standard requirements for the steady-state voltage regulation rate under pure resistive loads, but there is still a gap between the steady-state voltage regulation rate at a power factor of 0.8 lag and the Class III standard. Patent CN118868538A proposes adding a set of three-phase control windings on the stator. When the load changes, the air-gap magnetic field is changed by changing the current in the control windings to stabilize the output voltage. This method is effective, but the additional windings occupy the stator slot space, and together with the current in the control windings, the efficiency and power density of the generator will be reduced. In addition, for permanent magnet generators, due to the presence of magnets, the direct-axis magnetic reluctance of the rotor is very large, and the ability of the control winding current to adjust the air-gap magnetic field is limited. Patents CN221961644U and CN119582491A both change the layout of the rotor magnetic steel to increase the air-gap magnetic density of the generator and increase the direct-axis magnetic reluctance, thereby reducing the steady-state voltage regulation rate of the generator, but the effect is limited when the load power factor lags.

[0004] Reducing the steady-state voltage regulation rate of AC mobile power stations with permanent magnet generators as the main engine is of great significance for expanding the application range of permanent magnet generators and meeting the requirements of customers for generator performance. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a permanent magnet power generation system with a low voltage regulation rate. Regardless of the power factor of the load, the power factor of the permanent magnet generator always remains approximately equal to 1.0. Therefore, the steady-state voltage regulation rate of the power generation system can fully meet the requirements of Class II standards in the military standard GJB 235B-2000.

[0006] The present invention achieves its objective by employing the following technical solution:

[0007] A permanent magnet generator system with low voltage regulation rate is characterized by comprising: a three-phase permanent magnet generator and a detection and compensation module, wherein the detection and compensation module is electrically connected to the three-phase permanent magnet generator; the three-phase permanent magnet generator has a built-in voltage regulation circuit; the voltage regulation circuit includes chips N2 and N3; pin 1 of chip N2 is electrically connected to one end of resistor R23 and resistor R22, the other end of resistor R22 is electrically connected to pin 3 of transistor Q4, and pin 2 of transistor Q4 is electrically connected to resistor R5, capacitor C7, and pin 2 of transistor Q2. Pin 2; Pin 1 of the chip N3 is electrically connected to one end of resistor R27, the other end of resistor R27 and pin 2 of the chip N3 are electrically connected to one end of resistor R2, the other end of resistor R2 is electrically connected to pin 3 of transistor Q3, pins 1 and 2 of transistor Q3 are electrically connected to one end of resistor R3, pin 1 of transistor Q3 is electrically connected to one end of resistor R4, the other end of resistor R4 is electrically connected to one end of diode W1, and the other end of diode W1 is electrically connected to pin 3 of transistor Q3.

[0008] As a further limitation of this technical solution, pins 1 and 2 of transistor Q2 are electrically connected to one end of resistor R6, pin 1 of transistor Q2 is electrically connected to one end of resistor R7, pin 3 of transistor Q2 is electrically connected to one end of resistor R8, resistor R7 is electrically connected to pin 1 of bidirectional thyristor V1, the other end of resistor R8 is electrically connected to pin 2 of bidirectional thyristor V1 and the adjustable terminal of adjustable resistor RT1, one end of adjustable resistor RT1 is electrically connected to one end of resistor R9, the other end of adjustable resistor RT1 is electrically connected to capacitor C6 and one end of resistor R17, pin 3 of bidirectional thyristor V1, resistor R9, capacitor C6 and the adjustable terminal of adjustable resistor RT1 are connected to the adjustable terminal of adjustable resistor R17. The other end of capacitor C7 is electrically connected to the neutral (N) line. Pin 1 of transistor Q4 is electrically connected to the other end of resistor R5 and one end of resistor R11. Pin 3 of transistor Q4 is electrically connected to one end of resistor R10. The other end of resistor R11 is electrically connected to pin 1 of triac V2. Pin 2 of triac V2 is electrically connected to the other end of resistor R10 and the adjustable terminal of adjustable resistor RT2. One end of adjustable resistor RT2 is electrically connected to one end of resistor R12. The other end of adjustable resistor RT2 is electrically connected to capacitor C5 and one end of resistor R13. Pin 3 of triac V2, the other end of resistor R12, and the other end of capacitor C5 are electrically connected to the neutral (N) line. Pin 7 of the integrated operational amplifier N1B is electrically connected to the other ends of resistors R13 and R17. Pin 7 of the integrated operational amplifier N1B is also electrically connected to one end of capacitor C3, resistor R14, and capacitor C4. The other ends of capacitor C3, resistor R14, and capacitor C4 are respectively electrically connected to pin 6 of the integrated operational amplifier N1B. Pin 5 of the integrated operational amplifier N1B is electrically connected to one end of resistor R18. The other end of resistor R18 is electrically connected to the N-line. Pin 6 of the integrated operational amplifier N1B is electrically connected to one end of resistors R19 and R15. The other end of resistor R19 is electrically connected to one end of diode D2 and resistor R20. Pin 1 of the integrated operational amplifier N1A is electrically connected to one end of diode D12 and the other end of diode D2. Pin 2 of the integrated operational amplifier N1A is electrically connected to diode D12 and the other end of resistor R20. Pin 2 of the integrated operational amplifier N1A is electrically connected to one end of resistor R16. Pin 3 of the integrated operational amplifier N1A is electrically connected to one end of resistor R21. Pin 4 of the integrated operational amplifier N1A is electrically connected to one end of capacitor C12. Pin 8 of the integrated operational amplifier N1A is electrically connected to one end of capacitor C11. Connector J2 is electrically connected to one end of resistor R24 ​​and capacitor C8. Connector J2 is electrically connected to the other end of resistor R16 and resistor R15.

[0009] As a further limitation of this technical solution, pin 4 of chip N3 is electrically connected to one end of resistor R29 and pin 3 of bidirectional thyristor K1, resistor R29 and pin 1 of bidirectional thyristor K1 are electrically connected to the N line, pin 6 of chip N3 is electrically connected to one end of resistor R28, and the other end of resistor R28 and pin 2 of bidirectional thyristor K1 are electrically connected to the L line.

[0010] As a further limitation of this technical solution, pin 4 of chip N2 is electrically connected to one end of resistor R25 and pin 3 of bidirectional thyristor K2, pin 1 of resistor R25 and bidirectional thyristor K2 are electrically connected to the N line, pin 6 of chip N3 is electrically connected to one end of resistor R26, the other end of resistor R26 and pin 2 of bidirectional thyristor K1 are electrically connected to one end of capacitor C2, and the other end of capacitor C2 is electrically connected to the L line.

[0011] As a further limitation of this technical solution, one end of capacitor C13 is electrically connected to the L line. The capacitor C13, resistor R31, resistor R32, and resistor R33 are sequentially electrically connected. Resistor R33 is electrically connected to one end of diode D3 and one end of diode D4. The other end of diode D3 is electrically connected to resistor R34 and one end of capacitor C9. The other end of resistor R34 is electrically connected to one end of diode W2. The other ends of capacitor C9 and diode W2 are respectively electrically connected to the N line. The other end of diode D4 is electrically connected to resistor R35 and one end of capacitor C10. The other end of resistor R35 is electrically connected to one end of diode W3. The other ends of capacitor C10 and diode W3 are respectively electrically connected to the N line.

[0012] As a further limitation of this technical solution, the permanent magnet generator and the detection and compensation module can be integrated into a single unit or operate independently.

[0013] As a further limitation of this technical solution, the detection and compensation module adopts an active reactive power compensator with a rated voltage of 400V and a rated capacity of 12kVA.

[0014] As a further limitation of this technical solution, the three-phase permanent magnet generator has a rated power of 12kW, a rated voltage of 400V, a rated frequency of 50Hz, and a rated power factor of 0.8.

[0015] Compared with related technologies, the permanent magnet power generation system with low voltage regulation rate provided by the present invention has the following beneficial effects:

[0016] (1) Through reasonable electromagnetic and structural design, the permanent magnet generator can achieve the required steady-state voltage regulation rate under purely resistive load. The active reactive power compensator is organically combined with the permanent magnet generator. The active reactive power compensator detects the load current (J1 is the current transformer interface) and outputs the reactive current required by the load. In this way, the generator only outputs active current and therefore still operates in a state where the power factor is equal to or equal to 1, and has a low steady-state voltage regulation rate.

[0017] (2) Small size and easy to debug; it can also be a split type, with the permanent magnet generator and the active reactive power compensator separated and combined at the site of use. Its advantage is that the installation position is flexible.

[0018] (3) The steady-state voltage regulation rate is small; the utilization rate of permanent magnet generators is high; in addition to meeting the reactive power demand of the load, the active reactive power compensator can also filter if required, further improving the power quality.

[0019] (4) When the power factor is equal to 1.0, the permanent magnet generator meets the requirements of the user or standard for steady-state voltage regulation rate. This invention can meet the requirements of steady-state voltage regulation rate when the power factor is 0.8. Attached Figure Description

[0020] Figure 1 This is a block diagram of the power generation system of the present invention.

[0021] Figure 2 This is the circuit schematic diagram of the present invention. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] A permanent magnet power generation system with low voltage regulation rate includes: a three-phase permanent magnet generator and a detection and compensation module, wherein the detection and compensation module is electrically connected to the three-phase permanent magnet generator; the three-phase permanent magnet generator has a built-in voltage regulation circuit; the voltage regulation circuit includes chips N2 and N3; pin 1 of chip N2 is electrically connected to one end of resistor R23 and resistor R22, the other end of resistor R22 is electrically connected to pin 3 of transistor Q4, and pin 2 of transistor Q4 is electrically connected to resistor R5, capacitor C7 and pin 2 of transistor Q2; Pin 1 of chip N3 is electrically connected to one end of resistor R27. The other end of resistor R27 and pin 2 of chip N3 are electrically connected to one end of resistor R2. The other end of resistor R2 is electrically connected to pin 3 of transistor Q3. Pins 1 and 2 of transistor Q3 are electrically connected to one end of resistor R3. Pin 1 of transistor Q3 is electrically connected to one end of resistor R4. The other end of resistor R4 is electrically connected to one end of diode W1. The other end of diode W1 is electrically connected to pin 3 of transistor Q3.

[0024] The transistor Q2 has its pins 1 and 2 electrically connected to one end of resistor R6, pin 1 electrically connected to one end of resistor R7, and pin 3 electrically connected to one end of resistor R8. Resistor R7 is electrically connected to pin 1 of the bidirectional thyristor V1. The other end of resistor R8 is electrically connected to pin 2 of the bidirectional thyristor V1 and the adjustable terminal of adjustable resistor RT1. One end of adjustable resistor RT1 is electrically connected to one end of resistor R9, and the other end of adjustable resistor RT1 is electrically connected to capacitor C6 and one end of resistor R17. The other ends of pin 3 of the bidirectional thyristor V1, resistor R9, capacitor C6, and capacitor C7 are respectively electrically connected to... Connect the N-line. Pin 1 of transistor Q4 is electrically connected to the other end of resistor R5 and one end of resistor R11. Pin 3 of transistor Q4 is electrically connected to one end of resistor R10. The other end of resistor R11 is electrically connected to pin 1 of triac V2. Pin 2 of triac V2 is electrically connected to the other end of resistor R10 and the adjustable terminal of adjustable resistor RT2. One end of adjustable resistor RT2 is electrically connected to one end of resistor R12. The other end of adjustable resistor RT2 is electrically connected to capacitor C5 and one end of resistor R13. Pin 3 of triac V2, the other end of resistor R12, and the other end of capacitor C5 are respectively electrically connected to the N-line. Integrated operational amplifier. Pin 7 of the N1B is electrically connected to resistor R13 and the other end of resistor R17. Pin 7 of the integrated operational amplifier N1B is electrically connected to one end of capacitor C3, resistor R14, and capacitor C4. The other ends of capacitor C3, resistor R14, and capacitor C4 are electrically connected to pin 6 of the integrated operational amplifier N1B. Pin 5 of the integrated operational amplifier N1B is electrically connected to one end of resistor R18. The other end of resistor R18 is electrically connected to the N-line. Pin 6 of the integrated operational amplifier N1B is electrically connected to one end of resistor R19 and resistor R15. The other end of resistor R19 is electrically connected to diode D2 and one end of resistor R20. The integrated operational amplifier N1B... Pin 1 of the integrated operational amplifier N1A is electrically connected to one end of diode D12 and the other end of diode D2. Pin 2 of the integrated operational amplifier N1A is electrically connected to diode D12 and the other end of resistor R20. Pin 2 of the integrated operational amplifier N1A is electrically connected to one end of resistor R16. Pin 3 of the integrated operational amplifier N1A is electrically connected to one end of resistor R21. Pin 4 of the integrated operational amplifier N1A is electrically connected to one end of capacitor C12. Pin 8 of the integrated operational amplifier N1A is electrically connected to one end of capacitor C11. Connector J2 is electrically connected to one end of resistor R24 ​​and capacitor C8. Connector J2 is electrically connected to the other end of resistor R16 and resistor R15.

[0025] Pin 4 of chip N3 is electrically connected to one end of resistor R29 and pin 3 of bidirectional thyristor K1. Resistor R29 and pin 1 of bidirectional thyristor K1 are electrically connected to the N line. Pin 6 of chip N3 is electrically connected to one end of resistor R28. The other end of resistor R28 and pin 2 of bidirectional thyristor K1 are electrically connected to the L line.

[0026] Pin 4 of chip N2 is electrically connected to one end of resistor R25 and pin 3 of bidirectional thyristor K2. Resistor R25 and pin 1 of bidirectional thyristor K2 are electrically connected to the N line. Pin 6 of chip N3 is electrically connected to one end of resistor R26. The other end of resistor R26 and pin 2 of bidirectional thyristor K1 are electrically connected to one end of capacitor C2. The other end of capacitor C2 is electrically connected to the L line.

[0027] One end of capacitor C13 is electrically connected to line L. Capacitor C13, resistors R31, R32, and R33 are connected in sequence. Resistor R33 is electrically connected to one end of diode D3 and one end of diode D4. The other end of diode D3 is electrically connected to resistor R34 and one end of capacitor C9. The other end of resistor R34 is electrically connected to one end of diode W2. The other ends of capacitor C9 and diode W2 are respectively electrically connected to line N. The other end of diode D4 is electrically connected to resistor R35 and one end of capacitor C10. The other end of resistor R35 is electrically connected to one end of diode W3. The other ends of capacitor C10 and diode W3 are respectively electrically connected to line N.

[0028] The permanent magnet generator and the detection and compensation module can be integrated into a single unit or operate independently.

[0029] The detection and compensation module uses an active reactive power compensator with a rated voltage of 400V and a rated capacity of 12kVA.

[0030] The three-phase permanent magnet generator has a rated power of 12kW, a rated voltage of 400V, a rated frequency of 50Hz, and a rated power factor of 0.8.

[0031] The working principle of a permanent magnet power generation system with low voltage regulation rate provided by this invention is as follows:

[0032] This circuit can automatically detect the generator's output current. When the generator's output current reaches 50% of its rated value, i.e., approximately 9.6A, the output of the first stage of operational amplifier N1 is processed to obtain a voltage value. This voltage is then amplified and filtered in the second stage of operational amplifier N1 to obtain a voltage value of a certain amplitude. This voltage is then filtered by RC filters (R13 and C5), and after passing through RT2, it reaches the reference comparison pin of the reference circuit V2. Resistor R11 controls transistor Q4 to conduct. After transistor Q4 conducts, the +12V voltage flows through resistor R22 to optocoupler N2, causing optocoupler N2 to conduct. This, in turn, causes the controllable thyristor K2 to conduct through resistor R26, and capacitor C2 to conduct. Capacitor C2 is then connected between phase A and phase N of the generator output, providing reactive power to the permanent magnet generator and improving its steady-state regulation.

[0033] Similarly, when the output current reaches 80%, i.e., approximately 15.5A, the output of the first stage of operational amplifier N1 is processed to obtain a voltage value. This voltage is then amplified and filtered by the second stage of operational amplifier N1 to obtain a voltage value of a certain amplitude. This voltage is filtered by RC filters (R17 and C6), and then passes through RT1 to the reference comparison pin of the reference circuit V1. After resistor R7 turns on transistor Q2, the -12V voltage passes through resistor R2 to optocoupler N3, causing optocoupler N3 to conduct. Through resistor R28, this causes controllable thyristor K1 to conduct, and capacitor C1 to conduct. Capacitor C1 is then connected between phase A and phase N of the generator output, providing reactive power to the permanent magnet generator and improving the steady-state regulation rate of the permanent magnet generator.

[0034] R31, R32, R33, R34, R35, D3, D4, W2, W3, C9, and C10 form the power supply circuit for the operational amplifier, providing it with +12V and -12V operating voltages.

[0035] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A permanent magnet power generation system having a low voltage regulation, characterized by, include: A three-phase permanent magnet generator and a detection and compensation module, wherein the detection and compensation module is electrically connected to the three-phase permanent magnet generator; The three-phase permanent magnet generator has a built-in voltage regulation circuit. The voltage regulation circuit includes chips N2 and N3; Pin 1 of chip N2 is electrically connected to one end of resistor R23 and resistor R22, the other end of resistor R22 is electrically connected to pin 3 of transistor Q4, and pin 2 of transistor Q4 is electrically connected to resistor R5, capacitor C7 and pin 2 of transistor Q2. Pin 1 of chip N3 is electrically connected to one end of resistor R27. The other end of resistor R27 and pin 2 of chip N3 are electrically connected to one end of resistor R2. The other end of resistor R2 is electrically connected to pin 3 of transistor Q3. Pins 1 and 2 of transistor Q3 are electrically connected to one end of resistor R3. Pin 1 of transistor Q3 is electrically connected to one end of resistor R4. The other end of resistor R4 is electrically connected to one end of diode W1. The other end of diode W1 is electrically connected to pin 3 of transistor Q3.

2. The permanent magnet power generation system with low voltage regulation according to claim 1, characterized in that: The transistor Q2 has its pins 1 and 2 electrically connected to one end of resistor R6, pin 1 electrically connected to one end of resistor R7, and pin 3 electrically connected to one end of resistor R8. Resistor R7 is electrically connected to pin 1 of the bidirectional thyristor V1. The other end of resistor R8 is electrically connected to pin 2 of the bidirectional thyristor V1 and the adjustable terminal of adjustable resistor RT1. One end of adjustable resistor RT1 is electrically connected to one end of resistor R9, and the other end of adjustable resistor RT1 is electrically connected to capacitor C6 and one end of resistor R17. The other ends of pin 3 of the bidirectional thyristor V1, resistor R9, capacitor C6, and capacitor C7 are respectively electrically connected to... Connect the N-line. Pin 1 of transistor Q4 is electrically connected to the other end of resistor R5 and one end of resistor R11. Pin 3 of transistor Q4 is electrically connected to one end of resistor R10. The other end of resistor R11 is electrically connected to pin 1 of triac V2. Pin 2 of triac V2 is electrically connected to the other end of resistor R10 and the adjustable terminal of adjustable resistor RT2. One end of adjustable resistor RT2 is electrically connected to one end of resistor R12. The other end of adjustable resistor RT2 is electrically connected to capacitor C5 and one end of resistor R13. Pin 3 of triac V2, the other end of resistor R12, and the other end of capacitor C5 are respectively electrically connected to the N-line. Integrated operational amplifier. Pin 7 of the N1B is electrically connected to resistor R13 and the other end of resistor R17. Pin 7 of the integrated operational amplifier N1B is electrically connected to one end of capacitor C3, resistor R14, and capacitor C4. The other ends of capacitor C3, resistor R14, and capacitor C4 are electrically connected to pin 6 of the integrated operational amplifier N1B. Pin 5 of the integrated operational amplifier N1B is electrically connected to one end of resistor R18. The other end of resistor R18 is electrically connected to the N-line. Pin 6 of the integrated operational amplifier N1B is electrically connected to one end of resistor R19 and resistor R15. The other end of resistor R19 is electrically connected to diode D2 and one end of resistor R20. The integrated operational amplifier N1B... Pin 1 of the integrated operational amplifier N1A is electrically connected to one end of diode D12 and the other end of diode D2. Pin 2 of the integrated operational amplifier N1A is electrically connected to diode D12 and the other end of resistor R20. Pin 2 of the integrated operational amplifier N1A is electrically connected to one end of resistor R16. Pin 3 of the integrated operational amplifier N1A is electrically connected to one end of resistor R21. Pin 4 of the integrated operational amplifier N1A is electrically connected to one end of capacitor C12. Pin 8 of the integrated operational amplifier N1A is electrically connected to one end of capacitor C11. Connector J2 is electrically connected to one end of resistor R24 ​​and capacitor C8. Connector J2 is electrically connected to the other end of resistor R16 and resistor R15.

3. The permanent magnet power generation system with low voltage regulation according to claim 1, characterized in that: Pin 4 of chip N3 is electrically connected to one end of resistor R29 and pin 3 of bidirectional thyristor K1. Resistor R29 and pin 1 of bidirectional thyristor K1 are electrically connected to the N line. Pin 6 of chip N3 is electrically connected to one end of resistor R28. The other end of resistor R28 and pin 2 of bidirectional thyristor K1 are electrically connected to the L line.

4. The permanent magnet power generation system with low voltage regulation according to claim 1, characterized in that: Pin 4 of chip N2 is electrically connected to one end of resistor R25 and pin 3 of bidirectional thyristor K2. Resistor R25 and pin 1 of bidirectional thyristor K2 are electrically connected to the N line. Pin 6 of chip N3 is electrically connected to one end of resistor R26. The other end of resistor R26 and pin 2 of bidirectional thyristor K1 are electrically connected to one end of capacitor C2. The other end of capacitor C2 is electrically connected to the L line.

5. The permanent magnet power generation system with low voltage regulation according to claim 4, characterized in that: One end of capacitor C13 is electrically connected to line L. Capacitor C13, resistors R31, R32, and R33 are connected in sequence. Resistor R33 is electrically connected to one end of diode D3 and one end of diode D4. The other end of diode D3 is electrically connected to resistor R34 and one end of capacitor C9. The other end of resistor R34 is electrically connected to one end of diode W2. The other ends of capacitor C9 and diode W2 are respectively electrically connected to line N. The other end of diode D4 is electrically connected to resistor R35 and one end of capacitor C10. The other end of resistor R35 is electrically connected to one end of diode W3. The other ends of capacitor C10 and diode W3 are respectively electrically connected to line N.

6. The permanent magnet power generation system with low voltage regulation rate according to claim 5, characterized in that: The permanent magnet generator and the detection and compensation module can be integrated into a single unit or operate independently.

7. The permanent magnet power generation system having a low voltage regulation according to claim 1, characterized by: The detection and compensation module uses an active reactive power compensator with a rated voltage of 400V and a rated capacity of 12kVA.

8. The permanent magnet power generation system having a low voltage regulation according to claim 1, characterized by: The three-phase permanent magnet generator has a rated power of 12kW, a rated voltage of 400V, a rated frequency of 50Hz, and a rated power factor of 0.8.

Images