CAJ | 학술논문

本文提出采用两路占空比相同但具有一定相位差的PWM控制方法，可以在不影响响应速度的情况下减小电流纹波。分析了H半桥型励磁功放工作原理，给出了0～180。移相的电流纹波统一计算公式。以应用的开关功放为例，进行大量的仿真和实验，结果表明了上述理论分析和纹波计算公式的正确性。该方法简单有效，具有一定的应用价值。
본문제출채용량로점공비상동단구유일정상위차적PWM공제방법，가이재불영향향응속도적정황하감소전류문파。분석료H반교형려자공방공작원리，급출료0～180。이상적전류문파통일계산공식。이응용적개관공방위례，진행대량적방진화실험，결과표명료상술이론분석화문파계산공식적정학성。해방법간단유효，구유일정적응용개치。
A proper control method which is of two same duty ratio PWM signals with different phases is proposed to reduce the current ripple without effecting the response speed. The working principle of the H half-bridge excitation current switching power amplifier is analyzed and the calculation function current ripple with 0-180° phase shift is obtained. By using a practical switehing power amplifier as an illustrative example, numerical simulation and experimental method are implemented. The consistency of the simulation results and experimental results indicate that foregoing theoretical analysis and the current ripple calculation function are reasonable. The phase shifting method is valuable and easy to implement in practice.