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LI Yi,LIANG Weihua,GUO Mingzhu,GE Baoming.PWAM Controlled Quasi-Z Source Motor Drive System[J].JOURNAL OF POWER SUPPLY,2018,16(5):89-97
PWAM Controlled Quasi-Z Source Motor Drive System
Received:September 01, 2016  Revised:March 02, 2018
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DOI:10.13234/j.issn.2095-2805.2018.5.89
Keywords:pulse-width-amplitude-modulation  quasi-Z-source inverter (qZSI)  field orientation control  motor drive
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LI Yi School of Electrical Engineering, Beijing Jiaotong University, Beijing , China 14121441@bjtu.edu.cn
LIANG Weihua School of Electrical Engineering, Beijing Jiaotong University, Beijing , China
GUO Mingzhu School of Electrical Engineering, Beijing Jiaotong University, Beijing , China
GE Baoming School of Electrical Engineering, Beijing Jiaotong University, Beijing , China
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Abstract:
      Considering the disadvantages of the traditional quasi-Z source motor drive system, such as low efficiency and large volume, a novel pulse-width-amplitude-modulation(PWAM) method is proposed, which is quite different fr-om other PWM methods that are commonly used in the motor drive system. By using this method, only the upper and lower switching tubes on one bridge arm are doing PWM switching actions in every modulation period. As a result, the total switching actions and switching loss are reduced significantly, and the efficiency of the motor drive system is improved accordingly. Compared with the traditional PWM method, the capacitance and inductance required by this hybrid modulation method are obviously lower, which makes the system to be of smaller volume andhigher efficiency. A simulation model of a 1 kW quasi-Z-source-inverter(qZSI) is built, and the simulation result verifies that the permanent magnet synchronous motor under the PWAM based field orientation control has satisfactory operation results.
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