Transcript 指導教授：江炫樟 學 生：呂宗翰 1
指導教授：江炫樟 學 生：呂宗翰
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目錄
一、太陽能電池模組模擬器 二、單級並網之單相太陽能變流器 三、高升壓比返馳式太陽能變流器
市電並聯型 2
一、PV-Module Emulator
(a) Synchronous Buck Converter (b)Average current control (c)PV characteristic curve (d)PSIM simulation block 3
The PV-module emulator Controller By matlab real-time control The Implementation of PV-module power circuit 4
The simulation result in irradiance level 1 / 2 The experimental result in irradiance level 1 / 2 The simulation result in irradiance level 0.2 / 2 The experimental result in irradiance level 0.2 / 2 5
二、Design and Implementation of Single-Phase Grid-Connected Photovoltaic Power Generation Systems Advantage：low cost、high efficiency Disadvantage：many PV-modules、low reliability 6
Modeling of the full-bridge converter
L dI o dt
v control V d v tm
V s
k pwm v control
V s k pwm
V d v tm
Current controller design
u i K
1
K s K pwm i o i o
*
s
L K
1
K s K pwm L
s u i
u i
s L pwm
1
u L i k k s pwm
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DC voltage controller design
H dc
(
s
)
k s k C d v k
(
s dc
a
)
K dc
V m
2
V d
且
a
1
RC d v
PI
LPF
z
)
p
) a.DC-link voltage contains the second order voltage ripple.
b.The low-pass filter is used to attenuate the second-order ripple.
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Maximum Power Point Tracking(MPPT) controller PV-module characteristic curve Adjustability MPPT controller 9
The PSIM block of Single-Phase Grid-Connected PV Inverter 10
The PSIM simulation result 單位功因餽入市電 電流緊緊追隨其命令 電壓緊緊追隨其命令 11
三、Design and Implementation of High Step-up Flyback PV Inverter Advantage：low cost、high efficiency、 current limit、easy to control 12
三、The control system of High Step-up Flyback PV Inverter Voltage control inner loop MPPT control outer loop 13
Modeling of High step-up flyback PV inverter
Modeling of voltage loop system Type II voltage controller
p
K sample
T s
2
V R p p L v m t
(1
sC R p e
) 1
sC R p p v
PI
LPF
z
)
p
) To attenuate the second-order ripple of PV-module , the Fp must be less than 120Hz(754rad/s).
For MPPT control outer loop , voltage loop could design in 50Hz (300rad/s).
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The PSIM block of High step-up flyback PV Inverter 15
The High step-up flyback PV inverter controller By matlab real-time control The Implementation of High step-up flyback converter and line-frequency inverter 16
The simulation result： The experimental result： 17
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