1 research outputs found
Analysis and Design of MHz DC-DC Resonant Power Conversion System Using Series Inverters and Active Rectifier
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Όλ¬Έ(λ°μ¬) -- μμΈλνκ΅λνμ : 곡과λν μ κΈ°Β·μ 보곡νλΆ, 2022.2. νμ μ΅.곡μ§ν μ λ ₯ λ³ν νλ‘λ μ λ ₯ λ³ν νλ‘ λ΄μμ λ©΄μ , λΆνΌ λ° λ¬΄κ²μ ν° λΉμ€μ μ°¨μ§νλ μμ± μμλ₯Ό κ°μμν¬ μ μλ€. νΉν MHz μ΄μμ κ³ μ£Όνλ‘ λμνλ 곡μ§ν μ λ ₯ λ³ν νλ‘λ μμ± μμλ₯Ό κ³΅μ¬ μΈλν°λ‘ λ체 ν μ μκ³ , μ΄λ 곡μ§ν μ λ ₯ λ³ν νλ‘ λ΄μμ ν° μμ€μ μ°¨μ§νλ μμ± μμμ μ½μ΄ μμ€μ μ κ±° ν μ μλ€. λ°λΌμ κ³ μ§μ , κ³ ν¨μ¨μ μꡬνλ 무μ μ λ ₯ μ μ‘, μλΉμ κ°μ , λͺ¨λ°μΌ κΈ°κΈ° λ±μ μμ© λΆμΌλΏ μλλΌ λ°μ΄ν° μΌν°, μ κΈ° μλμ°¨ λ±μ μμ© λΆμΌμ λν΄μλ 곡μ§ν μ λ ₯ λ³ν νλ‘λ₯Ό μ μ©νλ €λ λ§μ μ°κ΅¬κ° μ΄λ£¨μ΄ μ§κ³ μλ€.
MHz μ΄μμ 곡μ§ν μ λ ₯ λ³ν νλ‘μ λμμ μν΄μ νμλ‘ μ¬μ©λλ WBG μ λ ₯ μ€μμΉλ μ λ ₯ λ³ν νλ‘μ νΉμ±μ ν° μν₯μ λΌμΉλ€. νΉν WBG μμμ μ 격 νΉμ± μ νκ³Ό WBG μμμ λμ 쑰건μ λ°λ₯Έ νΉμ± λ³λμ λν μ λ ₯ λ³ν νλ‘μ μμ‘΄μ±μ μ λ ₯ λ³ν νλ‘μ νΉμ±μ μ νμν€κ³ , λμ λ²μλ₯Ό μ ννλ©°, μμ€ν
μμμ μΆκ° νλ‘κ° μꡬλμ΄ μμ© λΆμΌκ° μ ν λλ λ± μ /무νμ λΉμ© μ¦κ°λ₯Ό μΌκΈ°νλ€.
λ³Έ λ
Όλ¬Έμμλ WBG μμμ νΉμ±μ λ°λ₯Έ 곡μ§ν DC-DC μ λ ₯ λ³ν νλ‘μ μμ‘΄μ±μ 극볡νκ³ μ λ ₯ νμ₯μ±μ 보μ₯νλ μ§λ ¬ 곡μ§ν μΈλ²ν° ꡬ쑰μ λ₯λ 곡μ§ν μ λ₯κΈ°λ₯Ό μ΄μ©ν 곡μ§ν DC-DC μ λ ₯ λ³ν νλ‘λ₯Ό μ μνλ€.
μ²«μ§Έλ‘ WBG μμμ μ μ μ 격 νΉμ±μ λν μμ‘΄μ±μ 극볡νκΈ° μνμ¬ μ§λ ¬ 곡μ§ν μΈλ²ν° ꡬ쑰λ₯Ό μ μνλ€. μ§λ ¬ μΈλ²ν°λ₯Ό ꡬμ±νλ κ° μΈλ²ν°μ λΉλμΉμ±κ³Ό μ νΈ μ§μ°μ μ€μ°¨λ₯Ό κ³ λ €ν λͺ¨λΈλ§μ ν΅ν λΆμμ μΈ μ κ·ΌμΌλ‘ μ λ ₯ λ³ν νλ‘μ μν μ λ₯ νΉμ±μ μ΅μννλ€. λν λΆμμ λ°νμΌλ‘ μ£Όμ΄μ§ μ€κ³ μ건μ λν μ΅μ μ€κ³λ₯Ό λμΆ ν μ μλ μ€κ³ λ°©λ²λ‘ μ μ 곡νλ€. λ¨μ μΈλ²ν°μ μ΅μ μ€κ³λ₯Ό ν΅νμ¬ μ±λ₯μ ν보νκ³ λͺ¨λνλ₯Ό ꡬμ±νμ¬ νμ₯μ±μ λλͺ¨νλ©°, μ΄λ₯Ό ν΅ν΄ μ
λ ₯ μ μμ μ¦κ°μ λν΄μ κΈ°μ‘΄ WBG μμμ μ μ μ 격μ μ νμ 극볡νκ³ μ λ ₯ λ³ν νλ‘μ μ
λ ₯ λμ λ²μλ₯Ό νμ₯ νλ€.
λμ§Έλ‘ WBG μμμ νΉμ± λ³λμ λν μμ‘΄μ±μ 극볡νκΈ° μνμ¬ λ₯λ 곡μ§ν μ λ₯κΈ° λμμ μ μνλ€. μ μνλ λ₯λ 곡μ§ν μ λ₯κΈ°λ μ€μμΉμ λμ λͺ¨λλ₯Ό μΆκ°νμ¬ μΆκ° νλ‘ μμ΄ μ λ₯κΈ°μ νΉμ±μ κ°λ³ νλ€. νΉν μ λ₯κΈ°μ μ
λ ₯ μνΌλμ€ νΉμ±μ μ νμ±μΌλ‘ μ μ§νκΈ° μνμ¬, μ λ₯κΈ° λκΈ° μ€μμΉμ λν° λΉμ λ°λ₯Έ νΉμ±μ λΆμνκ³ μ κ·ννμ¬ μ£Όμ΄μ§ λμ μ건과 무κ΄νκ² μ΅μ μ νΉμ±μ λμΆνλ€. λ°λΌμ ν¨κ³Όμ μΌλ‘ μ ν¨ μ λ¬ μ λ ₯μ μ λ¬ ν μ μμΌλ©° 곡μ§ν μ λ ₯ λ³ν νλ‘μ μΆλ ₯ λμ λ²μλ₯Ό νμ₯ νλ€.
μ μνλ ꡬ쑰 λ° λμμ 2λ¨, 3λ¨ μ§λ ¬ 곡μ§ν Class EF2 μΈλ²ν° ꡬμ±κ³Ό λ°ν μ λ₯κΈ°, 곡μ§ν Class E μ λ₯κΈ° λ±μ μ¬λ¬κ°μ§ μ λ ₯ λ³ν νλ‘μ μ‘°ν©μ λν΄μ λͺ¨μ μ€νκ³Ό μ€ν κ²°κ³Όλ₯Ό μννκ³ , μ μνλ λ°©λ²μ ν¨μ©μ±κ³Ό μ°μμ±μ κ²μ¦νμλ€.A resonant power conversion system can reduce the magnetic elements that occupy a large specific weight in the area, volume, and weight in the power conversion circuit. In particular, a resonant power conversion circuit that operates at a high frequency of MHz or higher can replace the magnetic element with an air-cored inductor, which can eliminate the core loss of the magnetic element that occupies a large loss in the resonant power conversion circuit. Therefore, a resonant power conversion circuit is applied such as wireless power transfer, consumer appliances, mobile devices, data centers, and electric vehicles.
The WBG devices, which is essential for the operation of MHz resonant power conversion circuit, has a great influence on the characteristics of the power conversion circuit. In particular, the dependence of the power conversion circuit on the rated characteristic limitation of the WBG devices and the characteristic difference due to the operating conditions lowers the characteristics of the power conversion circuit, limits the operating range, and requires an additional circuit on the system. , causes cost increase such as limited application fields.
In this paper, the MHz resonant DC-DC power conversion circuit using the series resonant Class EF2 inverter topology and the active resonant Class E rectifier that overcomes the dependence of the resonant power conversion circuit according to the characteristics of the WBG devices.
First, in order to overcome the dependence on the voltage rating characteristics of the WBG devices, a series resonant Class EF2 inverter topology is proposed. The circulating current characteristics of the power conversion circuit are minimized by an analytical approach based on modeling that takes into account the asymmetry and gate-signal propagation delay. It also provides a design methodology that can derive the optimal design for a given design requirement based on the analysis. Performance is ensured through the optimum design of the unit inverter, modularization is configured for modularity, which overcomes the voltage rating limitation of previous WBG device against an increase in input voltage, and the input operating range of the power conversion circuit.
Secondly, in order to overcome the dependence on the characteristic differences of the WBG devices, an active resonant Class E rectification is proposed. The proposed active resonant rectifier utilizes an additional mode of the synchronous switch. In particular, in order to keep the input impedance characteristics of the rectifier, the characteristics according to the duty ratio of the rectifier synchronization switch are analyzed and normalized to derive the optimum characteristics regardless of the given operating requirements. Therefore, the active power can be effectively transferred, and the operating range of the resonant power conversion circuit is extended.
The proposed topology and analysis is verified with the prototype board including two-stage or three-stage series resonant Class EF2 inverters, half wave rectifier, and Class E rectifier. Therefore, the effectiveness and the strength of the proposed topology and analysis are verified.μ 1 μ₯ μ λ‘ 1
1.1 μ°κ΅¬ λ°°κ²½ 1
1.2 μ°κ΅¬ λͺ©μ 13
1.3 λ
Όλ¬Έμ κ΅¬μ± 15
μ 2 μ₯ μ±κΈ μλλ 곡μ§ν νλ‘ 17
2.1 Class E μ λ ₯ λ³ν νλ‘ 17
2.1.1 Class E μ λ ₯ λ³ν νλ‘μ κΈ°λ³Έ λμ 18
2.1.2 λΆν 쑰건μ λν μμ‘΄μ± 20
2.1.3 Class E 곡μ§ν μ λ₯κΈ° 21
2.1.4 μ€μμΉ μΆλ ₯ 컀ν¨μν° λ³λμ λ°λ₯Έ νΉμ± λ³λ 22
2.2 Class F μ λ ₯ λ³ν νλ‘ 25
2.3 Class EF/ μ λ ₯ λ³ν νλ‘ 29
2.3.1 Class EF2 μ λ ₯ λ³ν νλ‘μ κ³ μ‘°ν νΉμ± 31
2.3.2 Class EF2 μ λ ₯ λ³ν νλ‘μ λΆν 쑰건 λ³λμ λν νΉμ± 34
μ 3 μ₯ μ§λ ¬ 곡μ§ν μΈλ²ν°λ₯Ό μ΄μ©ν 곡μ§ν DC-DC μ λ ₯ λ³ν νλ‘ 36
3.1 λμ μ
λ ₯ μ μμ μν 곡μ§ν μ λ ₯ λ³ν νλ‘ 36
3.2 μ§λ ¬ 곡μ§ν μΈλ²ν° ꡬ쑰μ μ μ 41
3.3 μμ λΉλμΉμ±μ λν μν₯ 44
3.3.1 μ§λ ¬ μΈλ²ν° ꡬ쑰μ μμ λΉλμΉ λ° μν₯ 46
3.4 μ§λ ¬ 곡μ§ν μΈλ²ν° ꡬ쑰μ λͺ¨λΈλ§ 51
μ 4 μ₯ 곡μ§ν λ₯λ μ λ₯κΈ°λ₯Ό μ΄μ©ν 곡μ§ν DC-DC μ λ ₯ λ³ν νλ‘μ λμ λ²μ μ¦κ° 69
4.1 곡μ§ν μ λ₯κΈ° μ
λ ₯ μνΌλμ€ νΉμ±μ λ°λ₯Έ κ³΅μ§ μ λ₯μ μν μ λ₯ νΉμ± 70
4.1.1 곡μ§ν μ λ₯κΈ° μ
λ ₯ μνΌλμ€μ λ°λ₯Έ μ§λ ¬ μΈλ²ν° ꡬλ 곡μ§ν μ λ ₯ λ³ν νλ‘μ νΉμ± νμΈ 71
4.2 곡μ§ν μ λ₯κΈ° μ
λ ₯ λ±κ° μνΌλμ€μ λ³λμ λν Class EF2 μΈλ²ν°μ νΉμ± νμΈ 77
4.3 λ₯λ 곡μ§ν Class E μ λ₯κΈ° κ°μ 83
4.3.1 μ μνλ 곡μ§ν λ₯λ Class E μ λ₯κΈ° λμμ λΆμ 88
4.4 κΈ°μ‘΄ μ°κ΅¬μμ νΉμ± λΉκ΅λ₯Ό ν΅ν μ μνλ μ λ₯κΈ° λμμ νΉμ§ νμΈ 104
μ 5 μ₯ μ μνλ 곡μ§ν DC-DC μ λ ₯ λ³ν νλ‘μ μ€κ³ 108
5.1 μΈλ²ν°μ μ€κ³ 109
5.1.1 Class EF2 μΈλ²ν°μ κΈ°λ³Έ λμ λ° μ€κ³ 110
5.1.2 μ§λ ¬ λͺ¨λν μ°κ²°μ μ€μ ꡬν μ κ³ λ € μ¬ν 115
5.1.3 μ§λ ¬ 곡μ§ν Class EF2 μΈλ²ν°μ μ€κ³ 120
5.2 λ₯λ 곡μ§ν Class E μ λ₯κΈ°μ μ€κ³ 126
5.2.1 μ΄κΈ°κ° μ€κ³λ₯Ό μν GaN μ λ ₯ μ€μμΉμ μ μ 126
5.2.2 μ€μμΉ νΉμ±μ κ³ λ €ν μ€κ³ 쑰건μ μ μ 129
5.2.3 μ μ λ μ€κ³ 쑰건μ λ₯λ μ λ₯ νΉμ± νμΈ 135
μ 6 μ₯ λͺ¨μ μ€ν λ° μ€ν κ²°κ³Ό 138
6.1 λͺ¨μ μ€ν 138
6.1.1 μΈλ²ν° λͺ¨λΈλ§μ μ λ’°μ± κ²μ¦ 138
6.1.2 μ§λ ¬ 곡μ§ν Class EF2 μΈλ²ν°μ λͺ¨μ μ€ν 146
6.1.3 μ λ₯κΈ° λͺ¨λΈλ§μ μ λ’°μ± κ²μ¦ 156
6.1.4 λ₯λ 곡μ§ν Class E μ λ₯κΈ°μ λͺ¨μ μ€ν 159
6.2 μ€ν κ²°κ³Ό 168
6.2.1 μ§λ ¬ 곡μ§ν Class EF2 μΈλ²ν°μ μ€ν κ²°κ³Ό 173
6.2.2 λ₯λ 곡μ§ν Class E μ λ₯κΈ°μ μ€ν κ²°κ³Ό 180
6.2.3 곡μ§ν DC-DC μ λ ₯ λ³ν νλ‘μ μ
λ ₯, μΆλ ₯ 쑰건 λ³λμ λ€λ₯Έ νΉμ± νμΈ 187
6.2.4 μ€ν κ²°κ³Ό λΆμ 189
μ 7 μ₯ κ²°λ‘ 195
7.1 μ°κ΅¬ κ²°κ³Ό 195
7.2 ν₯ν μ°κ΅¬ 198
μ 8 μ₯ λΆλ‘ 200
8.1 GaN μ€μμΉ κ΅¬μ‘° λ° κΈ°λ³Έ λμ 200
8.2 μ μνλ λ₯λ μ λ₯κΈ°μ νΉμ± λμΆ 201
8.3 λ³Έ μ°κ΅¬μμ μ¬μ©ν μ μ μ μνΌλμ€ μΈ‘μ κ²°κ³Ό 204
8.4 Murata LXRW19V201-058 λ²λ ν°λ₯Ό μ¬μ©ν μμ μ μ΄ νλ‘μ κ΅¬μ± λ° νΉμ± 205λ°